Cam Lobe Master Catalog

COMPCAMS.COM | 1.800.999.0853
1
TABLE OF CONTENTS
TABLE OF CONTENTS
How To Order
Solid Flat Tappet cont.
Selecting A Core ....................................................................................................................................2
Selecting Lobes ......................................................................................................................................2
Choosing Lobe Separation Angle ...................................................................................................2
Determining Part #/Grind # And Ordering..............................................................................3
Roller Cam Lobe Suffix Codes..........................................................................................................3
Core Listings Non-Standard Journal Size ..................................................................................3
Special Services .....................................................................................................................................4
Core Listing ..............................................................................................................................................5
GRI ............................................................................................................................................................ 43
MEM ........................................................................................................................................................ 43
MHF ......................................................................................................................................................... 44
FL & SQ .................................................................................................................................................. 44
High RPM Dash 12 .......................................................................................................................... 45
Dash 13 ................................................................................................................................................. 45
F3 Exhaust ............................................................................................................................................ 46
D3C .......................................................................................................................................................... 46
XX.............................................................................................................................................................. 46
High Rocker Ratio ............................................................................................................................. 47
High Rocker Ratio II .......................................................................................................................... 47
N ................................................................................................................................................................ 48
Oval + ...................................................................................................................................................... 48
FE .875" ................................................................................................................................................. 49
TDLC ........................................................................................................................................................ 49
T1N - Very High RPM .875" Flat ................................................................................................ 49
TCT - High Ratio .875" Flat ........................................................................................................... 50
NRX .......................................................................................................................................................... 50
Dir 2.3 Ratio Conversions - .875" Flat .................................................................................... 50
BB GG .875" Plate ............................................................................................................................ 51
TDP Flat Plate ..................................................................................................................................... 51
TDP 2 Flat Plate ................................................................................................................................. 51
TDP Flat Plate - Lower Lobe Lift ................................................................................................. 51
HY Flat Plate ........................................................................................................................................ 52
Chrysler Special.................................................................................................................................. 52
MP ............................................................................................................................................................ 52
MM ........................................................................................................................................................... 53
Hydraulic Flat Tappet
High Energy™ ............................................................................................................................................9
Magnum ....................................................................................................................................................9
Dual Energy™ ........................................................................................................................................ 10
Thumpr™ ................................................................................................................................................ 10
Nostalgia Plus™ ................................................................................................................................... 11
Race......................................................................................................................................................... 12
Xtreme Energy™ ................................................................................................................................. 12
Xtreme Energy XFI™.......................................................................................................................... 13
Purple Plus ........................................................................................................................................... 14
Xtreme Mopar .................................................................................................................................... 14
Hydraulic Roller
High Energy™ & Magnum - Low & High Lift ........................................................................... 15
Tri Power Xtreme™ ........................................................................................................................... 16
Thumpr™ ................................................................................................................................................ 16
Xtreme Energy™ ................................................................................................................................. 17
Xtreme 4x4 .......................................................................................................................................... 18
Xtreme Energy XFI™.......................................................................................................................... 18
QXI ............................................................................................................................................................ 20
QXX .......................................................................................................................................................... 20
QNI............................................................................................................................................................ 21
QNX.......................................................................................................................................................... 22
Xtreme Marine™................................................................................................................................. 22
Xtreme Marine™ - High Lift............................................................................................................ 23
HUC .......................................................................................................................................................... 23
Xtreme RPM for LS1....................................................................................................................... 24
Xtreme RPR ......................................................................................................................................... 25
Xtreme Energy™ XE-R for LS1 ..................................................................................................... 25
Xtreme Energy™ LSL for LS1 ....................................................................................................... 26
Xtreme Energy™ LXL for LS1 ....................................................................................................... 26
Xtreme Energy™ LSK for LS1....................................................................................................... 27
Xtreme Energy™ VVI ......................................................................................................................... 27
LSN & LSD for DOD ......................................................................................................................... 28
EHI EHX .................................................................................................................................................. 28
DHI DHX ................................................................................................................................................. 29
Cheater HR Lift Rule Competition ............................................................................................. 30
Mustang R Lift Rule Competition ............................................................................................... 31
ESI ESX Stocker .................................................................................................................................. 31
DSI Stocker........................................................................................................................................... 32
CE Stocker ............................................................................................................................................ 32
CZK........................................................................................................................................................... 32
FSHR Stocker ...................................................................................................................................... 32
Xtreme Energy™ Harley................................................................................................................... 33
Solid Flat Tappet
High Energy™ & Magnum............................................................................................................... 33
Nostalgia Plus™ ................................................................................................................................... 34
Xtreme Energy™ ................................................................................................................................. 34
High Torque.......................................................................................................................................... 35
High RPM .............................................................................................................................................. 35
Hi-Tech™ ................................................................................................................................................. 35
Tight Lash.............................................................................................................................................. 36
High RPM II........................................................................................................................................... 36
XTQ........................................................................................................................................................... 36
XTX ........................................................................................................................................................... 37
JF .330" Lift ......................................................................................................................................... 38
HF & JF Lift Rule ................................................................................................................................ 38
Max Area (MA) ................................................................................................................................... 39
Max Area (MA) Lift Rule ................................................................................................................. 40
USI USX UPI UPX Stocker Flat .................................................................................................... 42
MH ............................................................................................................................................................ 42
Solid Roller
High Energy™ Street ......................................................................................................................... 53
Xtreme Energy™ Street ................................................................................................................... 54
Xtreme Energy™ Duramax Street .............................................................................................. 54
Base Design ......................................................................................................................................... 55
Hi-Tech™ ................................................................................................................................................. 56
High Torque .406" ............................................................................................................................ 56
Hi-Tech™ .420" Exhaust .................................................................................................................. 56
Hi-Tech™ .420" .................................................................................................................................... 57
RT .............................................................................................................................................................. 57
NC ............................................................................................................................................................. 58
NSC .......................................................................................................................................................... 58
RZ ............................................................................................................................................................. 59
RZ Low Lift ............................................................................................................................................ 59
AS Endurance...................................................................................................................................... 60
TC .............................................................................................................................................................. 60
RX ............................................................................................................................................................. 61
CR ............................................................................................................................................................. 61
CR Lift Rule ........................................................................................................................................... 62
ZT .............................................................................................................................................................. 62
ZS .............................................................................................................................................................. 63
TD, TJ & TJS ........................................................................................................................................ 63
TS .............................................................................................................................................................. 64
High Ratio Restricted ...................................................................................................................... 64
RP ............................................................................................................................................................. 65
SP.............................................................................................................................................................. 65
RC ............................................................................................................................................................. 66
TK .............................................................................................................................................................. 66
SP-TK High Lift .................................................................................................................................... 67
TK Lift Rule ........................................................................................................................................... 68
SPL ........................................................................................................................................................... 68
VK Lift Rule ........................................................................................................................................... 68
DSZ .......................................................................................................................................................... 69
CSZ ........................................................................................................................................................... 69
Hi-Tech™ .440" Intake ...................................................................................................................... 70
High Torque .440" ............................................................................................................................ 70
High Torque .460" ............................................................................................................................ 70
High Torque .420" Exhaust........................................................................................................... 71
High Ratio - High RPM Super Stock ......................................................................................... 71
HXL........................................................................................................................................................... 71
HXX .......................................................................................................................................................... 72
HXX HL ................................................................................................................................................... 72
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TABLE OF CONTENTS
Solid Roller cont.
SXZ Pro Stock Drag.......................................................................................................................... 98
HDZ Pro Stock Drag......................................................................................................................... 99
PSB Pro Mod Drag............................................................................................................................ 99
XMZ Pro Mod Drag........................................................................................................................... 99
DJP............................................................................................................................................................ 99
PSA Pro Stock Drag....................................................................................................................... 100
PVI Pro Stock Drag......................................................................................................................... 100
DXP Pro Stock Drag...................................................................................................................... 100
XCH Pro Stock Drag...................................................................................................................... 100
DKL Pro Stock Drag....................................................................................................................... 101
TDS Pro Stock Drag....................................................................................................................... 101
TXJ Pro Stock Drag....................................................................................................................... 101
JI Pro Stock Drag............................................................................................................................ 101
PNI Pro Stock Drag........................................................................................................................ 101
PNX Pro Stock Drag...................................................................................................................... 102
Pro Mod Exhaust............................................................................................................................. 102
DRP DJP XNP Pro Stock Drag................................................................................................. 102
XCM Pro Stock Drag..................................................................................................................... 103
DRX Drag Race Exhaust.............................................................................................................. 103
XMZ XJZ Pro Mod Exhaust Drag............................................................................................ 103
UDR Fuel & ALC Intake................................................................................................................. 104
FDR Fuel & ALC Intake.................................................................................................................. 104
FCX Fuel & ALC Exhaust.............................................................................................................. 104
EF Fuel & ALC Intake...................................................................................................................... 105
FLI Fuel Intake.................................................................................................................................... 105
FLX Fuel Exhaust.............................................................................................................................. 105
NFV Top Fuel Pro Drag (2012/2013)................................................................................ 105
Chrysler Special Race................................................................................................................... 106
Overhead Cam (Pivoting Follower)
Ford Modular Xtreme Energy™ 4.6 & 5.4L - SOHC or DOHC..................................... 106
Modular Stocker.............................................................................................................................. 107
MHS Modular Stocker.................................................................................................................. 108
MH 2V & 4V Modular Race....................................................................................................... 109
Ford Modular Xtreme Energy™ 4.6 & 5.4L - 3V............................................................... 109
Ford Modular RSS Race - 3V..................................................................................................... 110
Ford Coyote NSRI & NSRX Street - 4V................................................................................. 111
Ford Coyote CRI & CRX Street - 4V........................................................................................ 111
Ford 2000-2300 OHC Street................................................................................................... 112
Ford 2000-2300 OHC Race..................................................................................................... 112
Ford 2000-2300 OHC Race Roller Follower..................................................................... 112
Ford 2300 - FP Roller................................................................................................................... 113
GM Ecotech - Xtreme Energy™ Hydraulic Roller OHC.................................................... 113
Mitsubishi 4G63 - Xtreme Energy™ Hydraulic Roller OHC........................................... 114
Nissan L16, 18, 20B..................................................................................................................... 114
Toyota 20R-22RE............................................................................................................................ 115
SOH OHC Rollers for Ford 427 SOHC.................................................................................. 115
VM OHC Rollers for Ford 427 SOHC..................................................................................... 116
Overhead Cams (Direct Acting)
VW or Direct 1" Tappet............................................................................................................... 116
OHC - Multipurpose Bucket........................................................................................................ 116
Quad 4 - Bucket .............................................................................................................................. 117
OHZ - Street/Strip Bucket ........................................................................................................ 117
OHRX - High RPM Bucket .......................................................................................................... 117
OHRVX - High Lift ............................................................................................................................ 118
XCOH Exhaust High Lift ............................................................................................................... 118
OHRXA - Street Intake ................................................................................................................. 118
OHRXA - Street Exhaust .............................................................................................................. 118
PCI Intake - Limited RPM OHC 33mm Bucket................................................................... 119
PCX Exhaust - Limited RPM OHC 33mm Bucket............................................................. 119
PDI Intake - Limited RPM OHC 33mm Bucket.................................................................. 119
PDX Exjaust - Limited RPM OHC 31.5mm Bucket.......................................................... 119
OHV Intake 38-40mm Bucket................................................................................................... 120
XCO Exhaust 35-40mm Bucket............................................................................................... 120
OVH Intake 38-40mm Bucket................................................................................................... 120
Thumpr™ Flathead Ford - Direct Solid 1" Tappet (CCW Rotation)........................... 120
FC Solids.............................................................................................................................................. 121
W W W . C O M P C A M S . C O M
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TABLE OF CONTENTS
Solid Roller cont.
HPX........................................................................................................................................................... 72
HXX LL..................................................................................................................................................... 73
IXL.............................................................................................................................................................. 73
IXLL............................................................................................................................................................ 74
UB.............................................................................................................................................................. 74
UBL............................................................................................................................................................ 75
UBA........................................................................................................................................................... 75
UBLL......................................................................................................................................................... 75
DIX............................................................................................................................................................. 76
GCI & GCX.............................................................................................................................................. 76
ULG UVX High Ratio.......................................................................................................................... 76
DSP........................................................................................................................................................... 77
DSS........................................................................................................................................................... 77
DSL............................................................................................................................................................ 78
DPC & DPD........................................................................................................................................... 78
HOI & HOX............................................................................................................................................. 78
UL............................................................................................................................................................... 79
High RPM Intake................................................................................................................................. 79
CE Drag Intake..................................................................................................................................... 80
Dash 31.................................................................................................................................................. 80
Mountain Motor.................................................................................................................................. 80
High RPM Exhaust............................................................................................................................. 81
JX Drag Exhaust................................................................................................................................. 81
XCX Drag Exhaust.............................................................................................................................. 82
XJX Drag Exhaust.............................................................................................................................. 83
Rev Drag Intake................................................................................................................................... 83
RX Drag Intake.................................................................................................................................... 83
RX Pro Drag Intake............................................................................................................................ 84
DR Pro Drag Intake........................................................................................................................... 84
TS Pro...................................................................................................................................................... 85
TSP TSX Pro......................................................................................................................................... 85
DLB............................................................................................................................................................ 86
DNW........................................................................................................................................................ 86
DRZ Pro Stock Drag......................................................................................................................... 86
DQS Pro Stock Drag......................................................................................................................... 87
DRS Drag............................................................................................................................................... 87
RS Drag Intake..................................................................................................................................... 87
DRD Pro Stock Drag......................................................................................................................... 88
DRM Pro Stock Drag........................................................................................................................ 88
DRI Pro Stock Drag........................................................................................................................... 88
DRP Pro Stock Drag......................................................................................................................... 89
DRX Drag Exhaust............................................................................................................................. 89
XK Pro Stock Drag............................................................................................................................. 89
XKL Pro Stock Drag.......................................................................................................................... 90
XK .635" Pro Stock Drag Exhaust............................................................................................. 90
XKH Exhaust......................................................................................................................................... 90
XM Pro Exhaust.................................................................................................................................. 91
ZLX Pro Stock Drag.......................................................................................................................... 91
NX Pro Stock Drag Exhaust.......................................................................................................... 91
NXX........................................................................................................................................................... 92
PRI PLI Pro Stock Drag.................................................................................................................... 92
PRX PLX Pro Stock Drag................................................................................................................ 93
PRZ Pro Stock Drag......................................................................................................................... 93
PVX Pro Stock Drag.......................................................................................................................... 94
PZI Pro Stock Drag............................................................................................................................ 94
SPH & SPI Pro Stock Drag............................................................................................................ 94
SPX Pro Stock Drag.......................................................................................................................... 95
XCM Pro Stock Drag........................................................................................................................ 95
FPJ Pro Stock Drag........................................................................................................................... 95
XNR........................................................................................................................................................... 96
XRX Pro Stock Drag......................................................................................................................... 96
PVS Pro Stock Drag Exhaust........................................................................................................ 96
ZZX Pro Stock Drag Exhaust........................................................................................................ 96
PIC Pro Stock Drag........................................................................................................................... 97
PXC Pro Stock Drag.......................................................................................................................... 97
PZN PZJ PYJ Pro Stock Drag...................................................................................................... 97
DKN Pro Stock Drag......................................................................................................................... 98
FPI Pro Stock Drag............................................................................................................................ 98
HOW TO ORDER
HOW TO ORDER
COMP Cams® leads the industry in camshaft lobe offerings.
With thousands of active lobes in the COMP® library, the
combinations are infinite for any given engine. This means
that you can have a cam ground to your specific needs, and
you have the broadest selection of lobes available.
Choosing a cam for your application is a four-step process:
1. Select a core.
2. Select the lobes.
3. Select a lobe separation angle.
4. Determine the part number and grind number, and order the cam.
1. Selecting a Core
Within the parameter of core applications, we have sixteen
cores that cover many engine applications. They are designated as follows:
-0
-5
-5RR
-7
-8
-9
-9L
-9R
-9W
-10
-11
-12
-14
-16
-44
-47
Steel Billet Round Lobe
Flat Tappet (Hydraulic or Solid Lifter)
Reverse Rotation Flat Tappet
Special Flat Tappet
Street Roller (Hydraulic or Solid Roller)
Special Material – Bronze Distributor Gear
Not Required on Most Applications
Steel Billet Roller
OHC Roller Left
OHC Roller Right
Welded Steel Billet Flat Tappet
Steel Billet Roller
Steel Billet Roller
Steel Billet Roller
4/7 Swap Steel Billet Roller
Steel Flat Tappet
Steel Billet Roller – Press-On Distributor Gear
4/7 Swap Cast Flat Tappet
Special Note: The -0 core is a round lobe core that is not heat-treated.
These cores must be roughed and then heat-treated before finished
lobe grinding takes place.
The complete core list follows on pages 6-8. The list is separated into the different cam core types. The part number
in front of each core is used in ordering a custom ground
cam for a particular engine type. It consists of a two-digit
prefix designating the engine type, followed by a dash (-)
and three consecutive zeros. The zeros indicate a custom
ground cam. Next are a dash and number from the core
designations previously listed.
Example:
Engine Prefix
12
Part #
000
Core Type
-9
The number 12- indicates Small Block Chevy (found on the
core listing pages 6-8).
The 000 indicates a custom grind.
The -9 indicates steel billet roller core.
2
2. Selecting Lobes
The lobes are listed on pages 9-121 and represent the
most current library of lobes offered by COMP Cams®. They
are arranged in groups, each of which is unique in its application. Along with each group is a description of each type,
which is intended to help clarify each family of lobes so that
you may accurately select lobes for your application. Some lobes specifically designated to be intake or exhaust
lobes do not necessarily have to be run on the valve for
which they were designed. If an exhaust lobe has the desired spec for intake (or vise versa) they may be used in
that manner.
Keep in mind while viewing the listings that certain flat tappet lobes are designed to be used only with correct diameter lifters.
3. Choosing Lobe Separation Angle
Lobe separation angles (the angle in cam degrees between the intake and exhaust lobe are also referred to as
"lobe centers") are very engine combination dependent. In
general, a tighter separation (ex. 104°-106°) results in a
"peakier" torque curve better suited to stick-shift cars with
multiple gear ratios to change between. Wider lobe separation (ex. 110°-112°) results in a broader, flatter torque
curve that is more suited to automatic transmission cars
with fewer gears from which to choose. Therefore, engines
have to be more powerful over a broader RPM range. Also,
as lobes get larger at .050" duration (275° and up), it is
necessary to begin widening separation angles to lessen
the amount of overlap that accumulates from the larger
lobes.
One final note about lobe separation angles — the cam
cores that are available for each application are designed
for nominal, standard lobe separation angles. Straying
from this nominal angle too far in one direction or another
can result in the heat-treated surface of the core being
ground through to the soft material underneath. Soft lobes
will fail in an engine if allowed to run for very long. Whether
or not the heat-treated surface is ground through also is
obviously dependent on the lobe being ground on the core.
The bottom line is that not all grinds can go on every core
that is available. More popular engines, like the Small Block
Chevy, have a variety of cores available with varying lobe
separation angles that can accommodate almost any
grind. Less popular applications, like the Flathead Ford V8,
only have one core available. Therefore, they are somewhat
limited in terms of what grind will fit on the single existing
core.
Technical Assistance is available
through a variety of sources:
Toll Free CAM HELP®: 1.800.999.0853
Website: COMPCAMS.COM
Email: [email protected]
24 Hour Fax: 901.366.1807
Twitter: @CPGTech
Technical and Sales Personnel are available from 7:00 a.m. to 8:00
p.m. CST, Monday through Friday and from 9:00 a.m. to 4:00 p.m. on
Saturday. COMP Cams® is closed on Sunday and legal holidays.
1 • 8 0 0 • 9 9 9 • 0 8 5 3
HOW TO ORDER
With the part number determined in the core selection
process, the grind number is the final step prior to ordering the cam. This process is simple and is accomplished by
picking up the "lobe number" that appears in the left column of the lobe selection chart. The intake lobe will be first
and the exhaust lobe will be second, followed by the lobe
separation angle.
For example, if lobe 5201 is selected as the intake and
5203 is selected as the exhaust, with a 106° lobe separation angle and this configuration is to be ground on a Small
Block Chevy core, the full number for ordering that cam
would be:
Part #: 12-000-5 Grind #: CS 5201/5203-H106
Roller Cam Lobe Suffix Codes
When it comes to ordering a roller cam, there are two things
that need to be considered: journal diameter and roller lifter
wheel diameter. Journal size and wheel diameter are very
important in making sure the lobe is performing to the specifications you require.
For example, if you were selecting lobes for a custom grind
Big Block Chevrolet cam then you would need to make sure
the lobes were designed for a Big Block Chevrolet journal
diameter (1.948"). If Small Block Chevrolet lobes were
used instead, the specifications of the cam would be inaccurate. The journal diameter of a Small Block Chevrolet is
1.868". The lobes on the big block cam would "grow" approximately 2° if ground using small block lobe designs. The
same principle applies to various roller lifter wheel diameters.
COMP Cams® has done the math for you, so all you need to
do is make sure you order the lobes with the correct suffixes to signify the proper journal diameter and roller lifter
wheel diameter.
Master Suffix Codes for Various Roller Cam Journal Diameters:
T – 1.750" (Very Small-V6 Buick, etc.)
N – 0.900" Base Circle Diameter (Any Journal Size)
S – 1.868" (Small Block Chevrolet)
B – 1.948" or 1.968" (Big Block Chevrolet or 50mm)
F – 2.036", 2.051" or 2.081" (Small Block Ford & Cleveland)
R – 2.1653" or 2.1234" (55mm, LS1 or Big Block Ford)
M – 2.3622" (60mm)
Master Suffix Codes for Various Roller Lifter Wheel Diameters:
E – 0.812" (from 0.792" to 0.832")
G – 0.850" (from 0.830" to 0.870")
H – 0.950" (from 0.930" to 0.970")
U – 2.000" (1.000" Radius Sliding Tappet)
No Suffix – Standard (from 0.750" to 0.790")
Examples:
If you wanted to order a cam using lobe #4314 on the intake and lobe #4074 on the exhaust for a Big Block Chevy
cam with standard journals, standard .750" lifter wheel
diameter and a 110° lobe separation, your grind number
would be:
CB 4314B/4074B R110
However, if you wanted to order a cam with the same
specs for a Big Block Chevy but with 55mm journals and a
.812" lifter wheel diameter, your grind number would be:
CB 4314RE/4074RE R110
Core Listings Non-Standard Journal Size
Chevrolet Small Block
1.868" 1.875" 1.948" 1.968" or 50mm
2.165" or 55mm
Stock Chevy Bearing Size
Stock Block with Roller Bearings
Stock Size Rocket Block or Big Block
Rocket Block with Roller Bearing
Large Roller Bearing
Chevrolet Big Block
1.948" 1.968" 2.124" 2.165" or 55mm
2.362" or 60mm
Stock Chevy Bearing Size
Stock Block with Roller Bearings
Pro Stock Roller Bearing
(Same Size as Big Block Ford)
Large Roller Bearing "Jesel Core"
Large Roller Bearing
Ford Small Block, 351 Windsor & SVO Block
Journal #1 – 2.080"
Journal #2 – 2.065"
Journal #3 – 2.050"
Journal #4 – 2.035"
Journal #5 – 2.020"
Journal #1, 2, 3 & 4 – 2.165"
Journal #5 – 1.968"
All Journals – 2.051" All Journals – 2.081" Stock Ford Bearing Size
Stock Ford Bearing Size
Stock Ford Bearing Size
Stock Ford Bearing Size
Stock Ford Bearing Size
Roller Bearing – "Large Roller"
or "Roush Roller Bearing"
Roller Bearing – "Large Roller"
or "Roush Roller Bearing"
Roller Bearing – "Ford Motorsports" or "SVO Design Roller
Bearing"
Roller Bearing – New Design
Ford SVO
Chrysler Small Block
Journal #1 – 1.998" Journal #2 – 1.982" Journal #3 – 1.967" Journal #4 – 1.951" Journal #5 – 1.561" Journal #1, 2, 3, & 4 – 1.969"
Journal #5 – 1.575" All Journals – 1.968" 2.362" or 60mm Stock Chrysler Bearing Size
Stock Chrysler Bearing Size
Stock Chrysler Bearing Size
Stock Chrysler Bearing Size
Stock Chrysler Bearing Size
Joey Arrington Style Roller Bearing
Joey Arrington Style Roller Bearing
Mopar Performance Roller Bearing
Roller Bearing
W W W . C O M P C A M S . C O M
3
HOW TO ORDER
4. Determining a Part Number/
Grind Number and Ordering
SPECIAL SERVICES
SPECIAL SERVICES
COMP Cams® Special Services
A partial listing of the most common high end treatments
and special processes you can order for your COMP Cams®
camshaft. Additional services are available; contact us for
any special needs.
Camshaft Surface Preparations
Nitriding − Part #1-111-1
This is the most effective process for extending the life of a
high performance flat tappet camshaft. Nitriding increases
the hardness of the camshaft surface metal by physically
injecting nitrogen "needles" into the surface of the lobes
and journals to increase their resistance to wear.
Camshaft Micropolishing − Part #1-114-1
This procedure removes microscopic imperfections in the
surface of the metal. Micropolishing can further increase
the durability of the camshaft and can be performed to only
the camshaft lobes or all wear surfaces.
Xtreme Surface Finish Enhancement − Part #1-137-1
Our highest-quality finishing process involving considerably
more polishing than any other procedure. This is most
commonly used in steel-on-steel contact valve train situations, such as high end circle track flat tappet camshafts
where billet materials have repeated contact in extremely
high RPM environments.
Drilling and Tapping Camshaft Nose − Part #1-136-1
A process performed on Viper camshafts, the nose of the
camshaft is drilled and then tapped to convert from a single timing gear bolt-up to a three-bolt aftermarket timing
chain set. This allows for a wider selection of timing sets.
Machining a Rear Camshaft Journal Groove − Part #1-119-1
A process commonly performed on 1965-66 Big Block
396c.i. Chevrolet engines, which features oiling systems
that require a groove be cut into the rear journal of the
camshaft. This was a two-year only condition, not required
in all 1967 and newer Big Block Chevrolet engines.
Machining of the Rear Pump Drive − Part #1-116-1
Allows sprint car-style engines to run the fuel pump from the
rear of the camshaft rather than traditional placements.
Side Cutting of Camshaft Lobes − Part #1-127-1
A process often requested that helps to keep the lifters
from making contact with adjacent lobes when the engine’s
lifter bores have been enlarged.
Sleeving of the Camshaft Journal − Part #1-132-1
Most popular with Ford Windsor engine roller bearing
camshaft applications, a sleeve is placed around the standard rear journal to increase the size of the journal, making
it compatible with rear roller bearing usage.
Fuel Pump Lobe Regrinding − Part #9-999-1
A refinishing process used to clean up a fuel pump lobe which
may have been damaged or is showing excessive wear.
Precision Camshaft Measurement
Basic Camshaft Profiling − Part #1-126-1
Performed on two lobes of any camshaft, the component is
measured to determine its lift, duration and lobe centerline
specifications.
Adcole Camshaft Profiling − Part #1-125-1
Our highest precision camshaft measuring device, the Adcole, checks all 16 camshaft lobes to determine that the
cam meets all specifications requested by the customer.
The Adcole measures camshaft specifications to 0.00001
of an inch.
Special Operations
Replacement of the Camshaft Dowel Pin − Part #1-120-1
This is a process which repairs camshafts when the current dowel pin has either been sheared off or damaged in
some manner. The old dowel pin (or remaining part) is removed by machining and a new dowel pin is inserted.
Installation of Dual Dowel Pins − Part #1-121-1
For certain applications, dual dowel pins can be installed to
further ensure that the camshaft and timing gear connection
are secure. This is most commonly done with early model
Ford V8s and classic Chrysler Hemi engines. The timing gear
can also be machined to adapt to this new configuration.
4
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CAM CORES
Core Description
CAM CORES
Core #
FLAT TAPPET CAM CORES (HYDRAULIC OR SOLID)
10-000-5
AMC
68-000-5
AMC
114-000-5
AMC
63-000-5
BUICK
69-000-5
BUICK
90-000-5
BUICK
91-000-5
BUICK
92-000-5
BUICK
96-000-5
BUICK
94-000-5
CADILLAC
11-000-5
CHEVROLET
11-000-5RR
CHEVROLET
12-000-5A
CHEVROLET
12-000-5RR
CHEVROLET
13-000-5
CHEVROLET
15-000-5
CHEVROLET
16-000-5
CHEVROLET
18-000-5
CHEVROLET
48-000-5
CHEVROLET
60-000-5
CHEVROLET
61-000-5
CHEVROLET
62-000-5
CHEVROLET
77-000-5
CHEVROLET
89-000-5
CHEVROLET
20-000-5A
CHRYSLER
21-000-5
CHRYSLER
22-000-5
CHRYSLER
23-000-5
CHRYSLER
24-000-5
CHRYSLER
26-000-5
CHRYSLER
64-000-5
CHRYSLER
31-000-5
FORD
32-000-5
FORD
33-000-5
FORD
34-000-5
FORD
35-000-5
FORD
35-000-5RR
FORD
36-000-5
FORD
37-000-5
FORD
38-000-5
FORD
41-000-7
FORD
44-000-5
FORD
65-000-5
FORD
66-000-5
FORD
70-000-0
FORD
71-000-5
FORD
72-000-5
FORD
104-000-5
FORD
Engine
290-401 V8 (1966-91)
199-258 L6 (1964-95)
2.5L
198-225 V6 Odd Fire (1962-67)
3.0L-4.1L V6 (1978-87)
215 Aluminum V8
364-401-425 V8
350 V8 (1968-80)
400-430-455 V8 (1967-76)
368-425-472-500 V8
396-454 V8 (1967-96)
396-454 V8 Reverse Rotation (Marine Applications)
262-400 V8 (1957-98)
262-400 V8 Reverse Rotation (Marine Applications)
Corvair (1964-69)
200-229 V6 (1978-84)
2.8L, 3.1L and 3.4L (1980-95)
4.3L V6 (1983-97)
348-409 V8 (1958-65)
235 L6 Blue Flame (1952-62)
195-250 L6 (1962-85)
292 L6 (1963-90)
Chevette 1400cc (1976-77)/1600cc (1976-87)
Vega L4 140c.i. (1971-77)
273-360 V8 (1968-99)
383-440 V8 Single-Bolt (1958-78)
2.2L, 2.5L L4 OHC (1981-93)
383-440 V8 Three-Bolt (1958-78)
426 Hemi V8 (1966-71)
392 Hemi V8
225 L6 (1960-85)
289-302 V8 (1962-99)
351C, 351M-400M V8 (1970-82)
352-428 V8 FE (1963-95)
429-460 V8 (1968-99)
302 HO (1985-95), 351W V8 (1969-95)
351W Reverse Rotation (Marine Applications)
2600, 2800 V6
272-292-312V8 Y-Block (1955-62
2800 V6 (1983-85)
Flathead V8 (1949-53)
3.8L (1984-87) Only
144-250 (1960-83)
240-300 L6 (1965-95)
2000, 2300 OHC L4 (1983-87)
1600 L4 OHC (1965-85)
2000 L4 OHC (1970-77) 3-Bearing Journal
V8 "FE" (1958-62)
A. Different journal sizes available
W W W . C O M P C A M S . C O M
5
CAM CORES
CAM CORES
Core #
Core Description
Engine
10800E
10800I
81-000-5
82-000-5
83-000-5
95-000-5
79-000-5
80-000-5
84-000-5
88-000-5
42-000-5
103-000-5
53-000-5I
53-000-5E
103-000-5
14-000-5
51-000-5
52-000-5
74-000-5
87-000-5
73-000-5
85-000-5
FORD
FORD
HOLDEN
HOLDEN
INTERNATIONAL
MITSUBISHI
NISSAN
NISSAN
NISSAN
NISSAN
OLDSMOBILE
OLDSMOBILE
OLDSMOBILE
OLDSMOBILE
OLDSMOBILE
PONTIAC
PONTIAC
PONTIAC
TOYOTA
TOYOTA
VOLKSWAGEN
VOLKSWAGEN
2.0L Zetec Exhaust
2.0L Zetec Intake
6 Cyl. Flat Tappet 186"
252-308 V8 (1970-88)
304-392 V8 (1970-78)
2000, 2600 L4 RWD & FWD (1979-87)
1600, 1800 L4 (1969-84)
6 Cyl. SOHC
2200-2800 (1970-84) Gun Drilled
NAP Z L4 (1981-89)
260-455 V8 (1967-84)
V8 45° Bank Angle (1964-68)
2.3 Quad 4 Intake
2.3 Quad 4 Exhaust
V8 45° Bank Angle (1964-68)
151 L4 (1977-78)
265-455 V8 (1955-81)
151 L4 Iron Duke (1978-89)
2TC-3TC L4 OHV 1588-1700cc (1970-82)
20R, 22R L4 (1975-89)
1200, 1600 4 Cyl.
1457, 1788 SOHC 4 Cyl. (1974-89)
SPECIAL FLAT TAPPET CAM CORES
CHEVROLET
12-000-7A
04-000-16A
CHEVROLET
20-000-7A
CHRYSLER
21-000-7
CHRYSLER
55-000-16
CHRYSLER
32-000-7
FORD
35-000-7A
FORD
35-000-16
FORD
39-000-7
FORD
41-000-7
FORD
262-400 V8 Special Pro Core
SB2 Block/Heads - Steel
"R" Block w/ 48° Lifter Bore
383-440 V8 Single-Bolt (1958-78)
R5 Block/P7 Head - Steel
351C, 351M-400M V8 (1970-82)
SVO V8
SVO V8 - Steel
SVO V6 Odd Fire
Flathead V8
STREET ROLLER CAM CORES (HYDRAULIC OR SOLID ROLLER) (Special Material − Works w/ Most Standard Distributor Gears)
01-000-8
07-000-8
08-000-8
08-000-44
09-000-8
11-000-8
11-000-44
12-000-8
12-000-44
18-000-8
56-000-8
97-000-10
98-000-10
111-000-10
CHEVROLET
CHEVROLET
CHEVROLET
CHEVROLET
CHEVROLET
CHEVROLET
CHEVROLET
CHEVROLET
CHEVROLET
CHEVROLET
CHEVROLET
CHRYSLER
CHRYSLER
CHRYSLER
454-502 Generation VI Big Block
LT1 Engine
262-400 V8 w/ Roller Cam (1987-98)
262-400 V8 w/ Roller Cam (1955-98)
4.3L V6 w/ Roller Cam (1987-98)
396-454 V8 (1967-96)
396-454 V8 (1967-96)
262-400 V8 (1957-98)
262-400 V8 (1957-98)
4.3L V6 (1985-99)
4.3L V6 (1992-99) w/ Balance Shaft
V10 Viper
V10 Truck
2003 & Up Viper Three-Bolt
A. Different journal sizes available
6
1 • 8 0 0 • 9 9 9 • 0 8 5 3
CAM CORES
Core Description
Engine
CHRYSLER
CHRYSLER
CHRYSLER
DODGE
FORD
FORD
FORD
FORD
GM
GM
MITSUBISHI
MITSUBISHI
5.7 & 6.1L Hemi V8
Neon "Y" Engine Code Exhaust
Neon "Y" Engine Code Intake
Neon SOHC 2.0L (1995-01)
289-302 V8 (1962-99)
351C, 351M-400M V8 (1970-82)
302 HO (1985-95), 351W V8 (1969-99)
302 HO (1985-95), 351W V8 (1969-99)
6.5L Diesel
Duramax 6.6L Diesel
4G63 Evolution VIII Exhaust (2003 & Up)
4G63 Evolution VII Intake (2003 & Up)
RACE ROLLER CAM CORES − STEEL BILLET
10-000-9
AMC
93-000-9
BUICK
02-000-9
CHEVROLET
08-000-9
CHEVROLET
07-000-9
CHEVROLET
CHEVROLET
11-000-9A
01-000-9
CHEVROLET
12-000-9A
CHEVROLET
CHEVROLET
03-000-9A
04-000-10A
CHEVROLET
14-000-9
CHEVROLET
15-000-9
CHEVROLET
17-000-9
CHEVROLET
19-000-9
CHEVROLET
28-000-9
CHEVROLET
29-000-9
CHEVROLET
48-000-9
CHEVROLET
76-000-9
GM
54-000-11
GM
46-000-9
GM
CHRYSLER
20-000-9A
23-000-9
24-000-9A
26-000-9
115-000-10
31-000-9
32-000-9
33-000-9
34-000-9
35-000-9A
39-000-9
40-000-9
49-000-8
102-000-9R
102-000-9L
106-000-9LE
CHRYSLER
CHRYSLER
CHRYSLER
CHRYSLER
FORD
FORD
FORD
FORD
FORD
FORD
FORD
FORD
FORD
FORD
FORD
CAM CORES
Core #
112-000-11
135-000-8E
135-000-8I
107-000-8
31-000-8
32-000-8
35-000-8
35-000-44
117-000-9
132-000-12
119-000-8E
119-000-8I
390-401 V8 (1966-79)
Stage II Even Fire
200-229 V6 Odd Fire w/ Splayed Valve Head
262-400 V8 (1987-98)
LT1 Engine (1992-98)
396-454 V8 (1967-96)
454-502 Generation VI Big Block
262-400 V8 (1957-98)
Standard Chevrolet Block w/ SB2 Heads
SB2 Block w/ SB2 Heads
153 L4 (1962-1972)
220-229 V6 Even Fire
V6 Odd Fire Race
262-400 V8 W/ Splayed Valve or Buick Head
Gaerte L4
Gaerte L4 w/ Splayed Valve Head
348-409 V8 (1958-65)
3800/3.8L V6 (1996-Present)
LS1 Engine (1997-Present)
8.1L V8
273-360 V8 (1968-99)
383-440 V8 Three-Bolt (1958-78)
426 Hemi V8 (1966-71)
392 Hemi V8
9 Bearing Hemi Pro Stock
289-302 V8 (1962-95)
351C, 351M-400M V8 (1970-82)
352-428 V8 FE (1963-76)
429-460 V8 (1968-99)
302 HO (1985-95), 351W V8 (1969-99)
SVO V6 Odd Fire
SVO V6 Even Fire
4.0L V6 (1990-97)
4.6L SOHC Right Side Cam Set
4.6L SOHC Left Side Cam Set
4.6L & 5.4L DOHC Left Exhaust
A. Different journal sizes available
W W W . C O M P C A M S . C O M
7
CAM CORES
CAM CORES
Core #
Core Description
Engine
106-000-9LI
106-000-9RE
106-000-9RI
127-000-9L
127-000-9R
109-000-10
113-000-9I
113-000-9E
116-000-12
82-000-9
42-000-9
51-000-9
52-000-9
101-000-8E
101-000-8I
120-000-12
FORD
FORD
FORD
FORD
FORD
GM
GM
GM
GM
HOLDEN
OLDSMOBILE
PONTIAC
PONTIAC
MITSUBISHI
MITSUBISHI
STERLING
4.6L & 5.4L DOHC Left Intake
4.6L & 5.4L DOHC Right Exhaust
4.6L & 5.4L DOHC Right Intake
4.6L 3 Valve Left
4.6L 3 Valve Right
R99/R03
Ecotech 2.2L DOHC Intake
Ecotech 2.2L DOHC Exhaust
DRCE3 Pro Stock
252-308 V8 (1970-88)
260-455 V8 (1965-90)
265-455 V8 (1955-81)
151 L4 Iron Duke
Intake Cam Set for 4G63
Exhaust Cam Set for 4G63
Sterling V12
RACE ROLLER CAM CORES − STEEL BILLET (ROUND)
10-000-0
AMC
122-000-0
BMW
67-000-0
BUICK
92-000-0
BUICK
96-000-0
BUICK
61-000-0
CHEVROLET
03-000-0
CHEVROLET
07-000-0
CHEVROLET
11-000-0
CHEVROLET
12-000-0
CHEVROLET
54-000-0
CHEVROLET
14-000-0
CHEVROLET
15-000-0
CHEVROLET
129-000-0
CHEVROLET
20-000-0
CHRYSLER
21-000-0
CHRYSLER
24-000-0
CHRYSLER
26-000-0
CHRYSLER
134-000-0
CHRYSLER
72-000-0
FORD
66-000-0
FORD
31-000-0
FORD
05-000-0
FORD
32-000-0
FORD
34-000-0
FORD
30-000-0
HARLEY DAVIDSON
42-000-0
OLDSMOBILE
51-000-0
PONTIAC
52-000-0
PONTIAC
8
390-401 V8 (1966-79)
Mini Cooper
231 V6 Odd Fire (1975-77)
350 V8
400-430-455 V8 (1967-76)
194-230-250-292-L6 (1962-84)
Standard Chevrolet Block w/ SB2 Heads
LT1 Engine (1992-98)
396-454 V8 (1967-96)
262-400 V8 (1957-98)
LS1 Engine (1997-99)
153 L4 (1962-72)
200-229 V6 Even Fire
3.4L V6 (2001 & Up)
273-360 V8 (1968-99)
383-440 V8 Single-Bolt (1958-78)
426 Hemi V8 (1966-71)
Chrysler Donovan Block
70MM Hemi Pro Stock
2000 L4 OHC (1970-77)
240-300 L6 (1965-Present)
289-302 V8 (1962-95) and SVO V8
SVO V8 w/ Mirror Image Heads
351C, 351M-400M V8 (1970-82)
429-460 Vi (1968-99)
80" Evolution
260-455 V8 (1965-90)
265-455 Vi (1955-81)
151 L4 Iron Duke
1 • 8 0 0 • 9 9 9 • 0 8 5 3
HYDRAULIC FLAT TAPPET
These lobes are to be used in applications where torque, mileage and vacuum are primary considerations. High Energy™ Hydraulics can be used as intake or exhaust lobes. They are simple street performance stock improvement lobes. This group must use
a minimum tappet diameter of .842" (Chevrolet) or larger.
Rated
Camshaft Type Lobe # Duration
High Energy™
Rated Duration @
.006" Tappet Lift
.842" Min. Dia.
5224
5225
5223
5226
5206
5200
5211
5205
5207
5212
5232
5222
5215
240-4
244-1
244-2
248-2
252-5
252-4
260-7
260-8
260-9
268-4
268-5
268-6
268-9
Duration in
Degrees
@ .050
192
196
196
200
206
206
212
212
212
222
218
218
218
@ .200
96
97
101
102
109
113
119
117
122
130
124
128
128
Lobe
Lift
.2600
.2567
.2666
.2600
.2706
.2835
.2933
.2795
.2960
.3090
.2853
.3026
.2960
Tappet Lift
@ TDC
106°
.024
.028
.028
.034
.041
.041
.049
.049
.050
.064
.059
.060
.059
110°
.017
.020
.020
.025
.031
.031
.038
.038
.039
.052
.047
.048
.047
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.390
.385
.400
.390
.406
.425
.440
.419
.444
.464
.428
.454
.444
1.6
.416
.411
.427
.416
.433
.454
.469
.447
.474
.494
.456
.484
.474
1.7
.442
.436
.453
.442
.460
.482
.499
.475
.503
.525
.485
.514
.503
MAGNUM HYDRAULICS
Magnum Hydraulics are to be used in high performance applications with a minimum tappet diameter of .842" (Chevrolet) or larger. These lobes are more aggressive in their design characteristics and can be used as intake or exhaust
lobes. They are a big brother to the High Energy™ family and are frequently used by the budget minded Saturday Night
racer. They also provide a very "throaty" sound.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
5201
270-4
224
135
.3130
.069
.057
5202
270-5
224
132
.3000
.068
.056
5239
276-3
228
140
.3160
.077
.064
5213
276-4
226
136
.3090
.072
.060
5216
280-3
230
137
.3063
.077
.064
Magnum
5203
280-4
230
140
.3200
.079
.066
Rated Duration @
5240
280-9
232
142
.3220
.080
.067
.006" Tappet Lift
5241
284-3
236
146
.3160
.091
.078
.842" Min. Dia.
5208
286-3
236
148
.3270
.089
.075
5229
288-9
237
148
.3220
.090
.076
5214
292-2
244
153
.3340
.101
.087
5204
292-3
244
151
.3235
.101
.087
5209
296-3
246
158
.3400
.106
.092
5210
305-3
253
163
.3500
.118
.104
5217
305-4
253
162
.3380
.118
.104
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.470
.450
.474
.464
.459
.480
.483
.474
.491
.483
.501
.485
.510
.525
.507
W W W . C O M P C A M S . C O M
1.6
.501
.480
.506
.494
.490
.512
.515
.506
.523
.515
.534
.518
.544
.560
.541
1.7
.532
.510
.537
.525
.521
.544
.547
.537
.556
.547
.568
.550
.578
.595
.575
9
HYDRAULIC FLAT TAPPET
HIGH ENERGY™ HYDRAULICS
HYDRAULIC FLAT TAPPET
HYDRAULIC FLAT TAPPET
DUAL ENERGY™ HYDRAULICS
Designed for the Dual Energy Cam™ Series, these lobes are good for every day driving where a broad torque curve is necessary. Very easy on related components. Designed as intake and exhaust lobes but could be used either way. Minimum
tappet diameter of .842" is necessary. These lobes produce good power for a daily driver or a weekend toy used as an
occasional bracket race car.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.5
1.6
5110A
255
203
110
.281
.036
.028
.422
.450
5146
255
203
110
.281
.036
.028
.422
.450
5310
254
204
109
.271
.037
.027
.407
.434
5128
265
211
117
.295
.049
.039
.443
.472
5312
265
211
112
.280
.049
.039
.420
.448
5128
273
211
117
.295
.049
.039
.443
.472
5166
265
211
117
.295
.049
.039
.443
.472
5120A
261
212
121
.301
.049
.039
.452
.482
5311
261
213
120
.286
.046
.039
.429
.458
Dual Energy™
5000
263
216
123
.292
.052
.042
.438
.467
Rated Duration @
.006" Tappet Lift 5126A
275
219
125
.308
.057
.047
.462
.493
.842"Min. Dia.
5326
275
219
123
.298
.057
.048
.447
.477
5163
275
219
125
.308
.057
.047
.462
.493
5130
275
219
125
.308
.057
.047
.462
.493
5127
269
221
129
.310
.062
.051
.465
.496
5315
272
221
124
.298
.062
.051
.447
.477
5006
275
223
128
.304
.057
.050
.456
.486
5129
276
227
134
.308
.074
.062
.462
.493
5136A
277
229
137
.321
.074
.062
.482
.514
5327
283
229
136
.313
.074
.062
.470
.501
5002
283
233
146
.320
.074
.070
.480
.512
5135
284
235
139
.321
.082
.070
.482
.514
1.7
.478
.478
.461
.502
.476
.502
.502
.512
.486
.496
.524
.507
.524
.524
.527
.507
.517
.524
.546
.532
.544
.546
THUMPR™ HYDRAULICS
The Thumpr™ lobe profiles are designed to optimize the character and sound, while providing excellent stability and a very
wide power range in hydraulic flat tappet applications. Specific profiles are developed uniquely for the intake and exhaust.
Rated
Camshaft Type Lobe # Duration
Thumpr™ Int.
Rated Duration @
.006" Tappet Lift
.842" Min. Dia.
Thumpr™ Int. CB
Rated Duration @
.006" Tappet Lift
.842" Min. Dia.
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
5040
5042
279
287
@ .050
227
235
@ .200
138
146
.319
.326
106°
.074
.088
110°
.061
.074
1.5
.479
.489
1.6
.510
.522
1.7
.542
.554
5044
295
243
154
.333
.101
.088
.500
.533
.566
5020
5022
279
287
227
235
132
141
.293
.300
.073
.086
.060
.073
.440
.450
.469
.480
.498
.510
5024
295
243
149
.307
.100
.086
.461
.491
.522
continued on page 11
10
1 • 8 0 0 • 9 9 9 • 0 8 5 3
HYDRAULIC FLAT TAPPET
Rated
Camshaft Type Lobe # Duration
Thumpr™ Int. FW
Rated Duration @
.006" Tappet Lift
.842" Min. Dia.
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
5520
5522
279
287
227
235
137
145
.306
.313
.073
.087
.060
.073
.459
.470
.490
.501
.520
.532
5524
295
243
153
.320
.101
.087
.480
.512
.544
Thumpr™ Int. CRS
Rated Duration @
.006" Tappet Lift
.842" Min. Dia
5820
5822
279
287
227
235
142
150
.324
.331
.075
.089
.062
.075
.486
.497
.518
.530
.551
.563
5824
295
243
158
.338
.103
.089
.507
.541
.575
Thumpr™ Exh.
Rated Duration @
.006" Tappet Lift
.842" Min. Dia.
5055
5057
297
305
241
249
148
156
.310
.317
.094
.107
.082
.094
.465
.476
.496
.507
.527
.539
5059
313
257
164
.324
.120
.107
.486
.518
.551
Thumpr™ Exh. CB
Rated Duration @
.006" Tappet Lift
.842" Min. Dia.
5031
5033
297
305
241
249
140
148
.284
.291
.093
.107
.080
.093
.426
.437
.454
.466
.483
.495
5035
313
257
157
.298
.120
.107
.447
.477
.507
Thumpr™ Exh. FW
Rated Duration @
.006" Tappet Lift
.842" Min. Dia.
5531
5533
297
305
241
249
143
152
.297
.304
.093
.107
.080
.094
.446
.456
.475
.486
.505
.517
5535
313
257
160
.311
.121
.107
.467
.498
.529
Thumpr™ Exh.CRS
Rated Duration @
.006" Tappet Lift
.842" Min. Dia.
5831
5833
297
305
241
249
149
157
.315
.322
.094
.109
.081
.094
.473
.483
.504
.515
.536
.547
5835
313
257
165
.329
.123
.108
.494
.526
.559
HYDRAULIC FLAT TAPPET
THUMPR™ HYDRAULICS cont.
NOSTALGIA PLUS™ HYDRAULICS
Designed to mimic the sound of the great engines of the past while improving performance by applying today’s design
techniques, these profiles are used in our Nostalgia Plus™ Series to capture the essence of the factory muscle cars of the
60s and 70s. These profiles are slightly slower off the seat than the Xtreme Energy™ profiles but have excellent area under
the curve for outstanding power.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
5066
258
211
120
.284
.048
.036
Nostalgia Plus
265
218
124
.280
.057
.045
Rated Duration @ 5067
.006" Tappet Lift 5068
276
229
140
.312
.078
.064
.842" Min. Dia.
5069
283
236
147
.308
.088
.074
5070
286
239
151
.322
.095
.081
5071
293
246
157
.318
.105
.091
™
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.426
.420
.468
.462
.483
.477
W W W . C O M P C A M S . C O M
1.6
.454
.448
.499
.493
.515
.509
1.7
.483
.476
.530
.524
.547
.541
11
HYDRAULIC FLAT TAPPET
HYDRAULIC FLAT TAPPET
RACE HYDRAULICS
These are the largest hydraulic designs COMP Cams® offers. With a minimum tappet diameter of .842" or larger needed,
these designs are intended for all out racing only. The larger lobes (268°, 270°, 276° @ .050" duration) were designed
with large cubic inch motors in mind in a high RPM environment. These lobes have smooth ramps making it easier for the
spring to control the valve.
Rated
Camshaft Type Lobe # Duration
Race
Rated Duration @
.006" Tappet Lift
.842" Min. Dia.
5195
5221
5196
5197
5198
5199
312-5
312-6
320-5
320-9
320-10
328-8
Duration in
Degrees
@ .050
260
260
268
268
270
276
@ .200
169
171
178
175
180
185
Lobe Lift
.3600
.3530
.3600
.3530
.3675
.3675
Tappet Lift
@ TDC
106°
.128
.131
.143
.141
.147
.156
110°
.114
.117
.129
.128
.133
.142
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.540
.530
.540
.530
.551
.551
1.6
.576
.565
.576
.565
.588
.588
1.7
.612
.600
.612
.600
.625
.625
XTREME ENERGY™ HYDRAULICS
Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster
intake valve opening increases engine vacuum and enhances throttle response. Special intake closing ramps close the valve
sooner, providing more cylinder pressure and torque without resulting in excessive valve train noise. Faster ramps achieve
maximum velocity sooner, increasing the area under the lift curve and providing maximum horsepower. Smoother exhaust
designs allow for a more effective purge of spent gasses from the combustion chamber to further increase horsepower.
Rated
Camshaft Type Lobe # Duration
Xtreme Energy™
Int.
Rated Duration @
.006" Tappet Lift
.842" Min. Dia.
12
5437
5440
5430
5441
5431
5442
5432
5443
5433
5444
5414
5445
5435
5446
5447
5418
5448
5438
5449
5439
5419
240
250
250
256
256
262
262
268
268
270
270
274
274
278
284
288
290
294
294
298
298
Duration in
Degrees
@ .050
196
206
206
212
212
218
218
224
224
226
226
230
230
234
240
244
246
250
250
254
254
@ .200
106
117
114
124
120
130
128
137
134
139
136
143
140
147
153
157
159
163
163
167
166
Lobe Lift
.275
.288
.277
.298
.283
.308
.297
.318
.303
.321
.303
.325
.303
.332
.338
.335
.344
.360
.346
.360
.338
Tappet Lift
@ TDC
106°
.026
.041
.041
.050
.050
.060
.060
.070
.070
.073
.073
.080
.080
.087
.097
.104
.108
.115
.115
.122
.122
110°
.018
.030
.030
.038
.038
.047
.047
.056
.056
.060
.060
.066
.066
.073
.084
.091
.094
.101
.101
.108
.108
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.413
.432
.416
.447
.425
.462
.446
.477
.455
.482
.455
.488
.455
.498
.507
.503
.516
.540
.519
.540
.507
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.6
1.7
.440
.468
.461
.490
.443
.471
.477
.507
.453
.481
.493
.524
.475
.505
.509
.541
.485
.515
.514
.546
.485
.515
.520
.553
.485
.515
.531
.564
.541
.575
.536
.570
.550
.585
.576
.612
.554
.588
.576
.612
.541
.575
continued on page 13
HYDRAULIC FLAT TAPPET
Rated
Camshaft Type Lobe # Duration
Xtreme Energy™
Exh.
Rated Duration @
.006" Tappet Lift
.842" Min. Dia.
5207
5205
5230
5232
5212
5201
5202
5203
5216
5208
5238
5214
5209
5210
5231
5234
5233
260
260
268
268
268
270
270
280
280
286
286
292
296
305
308
316
316
Duration in
Degrees
@ .050
212
212
218
218
222
224
224
230
230
236
236
244
246
253
256
264
264
@ .200
121
117
128
124
130
133
132
140
138
144
143
154
154
160
165
170
173
Lobe Lift
.296
.280
.303
.285
.309
.313
.300
.320
.306
.327
.306
.334
.340
.350
.350
.285
.353
Tappet Lift
@ TDC
106°
.050
.050
.059
.059
.064
.067
.068
.078
.078
.085
.086
.100
.101
.111
.120
.132
.133
110°
.040
.040
.048
.047
.052
.056
.056
.065
.066
.072
.073
.087
.088
.098
.106
.118
.120
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.444
.420
.455
.428
.464
.470
.450
.480
.459
.491
.459
.501
.510
.525
.525
.428
.530
1.6
.474
.448
.485
.456
.494
.501
.480
.512
.490
.523
.490
.534
.544
.560
.560
.456
.565
1.7
.503
.476
.515
.485
.525
.532
.510
.544
.520
.556
.520
.568
.578
.595
.595
.485
.600
HYDRAULIC FLAT TAPPET
XTREME ENERGY™ HYDRAULICS cont.
XTREME ENERGY XFI™ HYDRAULICS
The Xtreme Energy XFI™ Series is designed for use with modern induction systems, heads, springs and rockers. The XFI™
intake lobes have more lift than the base Xtreme series, and the XFI™ exhaust lobes have more area under the curve, for
better exhaust flow, than the base exhaust series. These are the first hydraulic flat tappet profiles designed for use with
COMP Cams® Beehive™ Valve Springs, such as the #26915, #26918 and #26120. The combination of these profiles,
the Beehive™ Springs, and our Ultra Pro Magnum™ Rocker Arms in higher ratios, makes for the most revolutionary improvement in hydraulic flat tappet design to date by bringing the latest race winning technology to the street.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
1.6
.477
.488
.499
.504
.520
.538
.552
.568
.584
1.7
.507
.519
.530
.536
.553
.571
.587
.604
.621
5101
266
217
127
.295
.059
.047
5103
272
223
134
.308
.068
.056
5105
280
231
143
.322
.082
.068
5107
290
241
154
.342
.099
.085
5109
302
253
166
.362
.120
.106
.443
.462
.483
.513
.543
.472
.493
.515
.547
.579
.502
.524
.547
.581
.615
Xtreme XFI™ Int.
Rated Duration @
.006" Tappet Lift
.842" Min. Dia.
Xtreme XFI™ Exh.
Rated Duration @
.006" Tappet Lift
.842" Min. Dia.
.298
.305
.312
.315
.325
.336
.345
.355
.365
106°
.044
.050
.056
.060
.070
.081
.091
.102
.112
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.447
.458
.468
.473
.488
.504
.518
.533
.548
252
256
260
262
268
274
280
286
292
@ .200
121
125
129
131
138
143
150
156
162
Tappet Lift
@ TDC
110°
.032
.038
.044
.047
.057
.067
.077
.088
.098
5082
5083
5084
5085
5086
5087
5088
5089
5090
@ .050
208
212
216
218
224
230
236
242
248
Lobe
Lift
W W W . C O M P C A M S . C O M
13
HYDRAULIC FLAT TAPPET
HYDRAULIC FLAT TAPPET
PURPLE PLUS HYDRAULICS (.904" MIN. TAPPET)
These use the same ramps as the Nostalgia Plus™ lobes but have more velocity for use with Chrysler/Mopar .904"
minimum tappet diameters.
Rated
Camshaft Type Lobe # Duration
Purple Plus
Rated Duration @
.006" Tappet Lift
.842" Min. Dia.
6882
6883
6884
6885
6886
6887
280
287
284
291
292
299
Duration in
Degrees
@ .050
233
240
239
246
247
254
@ .200
148
153
154
159
163
169
Lobe
Lift
.316
.316
.323
.323
.339
.339
Tappet Lift
@ TDC
106°
.086
.096
.097
.107
.111
.123
110°
.071
.082
.082
.092
.097
.108
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.474
.474
.485
.485
.509
.509
1.6
.506
.506
.517
.517
.542
.542
1.7
.537
.537
.549
.549
.576
.576
XTREME MOPAR HYDRAULICS (.904" MIN. TAPPET)
Xtreme Mopar Hydraulics are optimized for use with .904" minimum tappet diameters. The additional velocity allowed with
the Chrysler/Mopar .904" tappet results in more area and more lift than any of our other comparable hydraulic designs.
These are the best large tappet hydraulics ever.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
Xtreme Mopar
Int.
Rated Duration @
.006" Tappet Lift
.842" Min. Dia.
5964
5962
5965
5960
5961
5966
275
279
285
289
295
295
@ .050
231
235
241
245
251
251
@ .200
149
153
159
163
169
169
.350
.356
.363
.356
.356
.376
106°
.083
.089
.101
.109
.120
.120
110°
.069
.075
.087
.094
.105
.105
1.5
.525
.534
.545
.534
.534
.564
1.6
.560
.570
.581
.570
.570
.602
1.7
.595
.605
.617
.605
.605
.639
Xtreme Mopar
Exh.
Rated Duration @
.006" Tappet Lift
.842" Min. Dia.
5984
5985
5980
5981
5986
287
297
301
307
307
237
247
251
257
257
151
161
166
171
171
.350
.363
.360
.360
.376
.090
.107
.115
.126
.126
.076
.093
.101
.111
.111
.525
.545
.540
.540
.564
.560
.581
.576
.576
.602
.595
.617
.612
.612
.639
ENGINE BREAK-IN LUBRICANTS
Utilizing a special blend of extreme pressure additives (including the proper levels of Zinc) not found in conventional engine
oils, COMP Cams® Engine Break-In Oil and Additive promote
proper break-in and protect against premature camshaft,
lifter and valve train failure.
Scan the QR code to learn more about
the entire line of COMP Cams® lubricants.
14
1 • 8 0 0 • 9 9 9 • 0 8 5 3
HYDRAULIC ROLLER
HYDRAULIC ROLLER
HIGH ENERGY™ & MAGNUM HYDRAULIC ROLLERS − LOW & HIGH LIFT
The low lift profiles were designed for street and marine use. The low lift adds dependability and reliability for extended
use applications. The high lift versions of the hydraulic rollers are designed for all out applications where high lift is desired
because of cylinder head or engine modifications. They function well for street/strip. These lobes run well in big cubic inch
marine engines.
Rated
Camshaft Type Lobe # Duration
Hydraulic Roller
Low Lift
Rated Duration @
.006" Tappet Lift
Hydraulic Roller
High Lift
Rated Duration @
006" Tappet Lift
Duration in
Degrees
Lobe Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
3100
3101
3102
3103
3104
3105
3106
3160
3050
3168
3161
3051
3162
3052
3163
3053
3164
230
240
242
246
254
256
262
266
264
273
276
274
292
284
302
296
312
@ .050
178
188
191
192
199
200
206
210
210
215
220
220
230
230
240
240
250
@ .200
93
103
97
110
116
118
116
116
127
119
123
134
128
142
135
148
142
.2700
.2850
.2600
.3000
.3000
.3100
.3000
.2853
.3200
.2853
.2853
.3200
.2853
.3200
.2853
.3200
.2853
106°
.014
.022
.024
.024
.032
.035
.041
.047
.047
.052
.060
.061
.075
.077
.090
.091
.104
110°
.009
.015
.017
.017
.024
.026
.032
.037
.037
.041
.049
.050
.064
.064
.078
.078
.092
1.5
.405
.428
.390
.450
.450
.465
.450
.428
.480
.428
.428
.480
.428
.480
.428
.480
.428
1.6
.432
.456
.416
.480
.480
.496
.480
.456
.512
.456
.456
.512
.456
.512
.456
.512
.456
1.7
.459
.485
.442
.510
.510
.527
.510
.485
.544
.485
.485
.544
.485
.544
.485
.544
.485
3118
3107
3108
3114
3109
3110
3119
3112
3111
3122
3113
3150
3120
3115
3170
3151
3116
3171
3152
3117
260
266
270
281
276
284
280
290
286
290
304
307
304
304
315
318
314
325
329
324
206
210
215
220
220
224
224
230
230
236
242
244
244
244
248
252
252
258
262
262
126
130
133
134
138
136
144
143
152
160
158
158
161
164
161
164
169
169
172
177
.3330
.3330
.3330
.3200
.3400
.3330
.3500
.3400
.3735
.3800
.3670
.3600
.3830
.4000
.3600
.3600
.4000
.3600
.3600
.4200
.041
.047
.055
.060
.060
.066
.066
.075
.078
.091
.101
.100
.101
.104
.105
.111
.115
.122
.127
.130
.032
.037
.044
.048
.049
.054
.054
.063
.065
.076
.087
.087
.087
.090
.091
.097
.100
.108
.113
.115
.500
.500
.500
.480
.510
.500
.525
.510
.560
.570
.551
.540
.575
.600
.540
.540
.600
.540
.540
.630
.533
.533
.533
.512
.544
.533
.560
.544
.598
.608
.587
.576
.613
.640
.576
.576
.640
.576
.576
.672
.566
.566
.566
.544
.578
.566
.595
.578
.635
.646
.624
.612
.651
.680
.612
.612
.680
.612
.612
.714
W W W . C O M P C A M S . C O M
15
HYDRAULIC ROLLER
HYDRAULIC ROLLER
TRI-POWER XTREME™ HYDRAULIC ROLLERS
The Tri-Power Xtreme™ lobes are designed to deliver the best combination of torque, horsepower and fuel effeciency. These
designs have quick seat timing and excellent area under the curve but allow reduced spring force for less frictional losses
compared to other members of the Xtreme family. These are sized especially for the required timing of the Tri-Power series to provide optimum valve timing to reduce the parisitic losses of pumping the intake charge in past the throttle blades
and pushing out spent exhaust. Rated
Camshaft Type Lobe # Duration
Tri-Power
Xtreme™
Rated Duration @
.006" Tappet Lift
3590
3591
3592
3595
3596
3597
3604
3605
3606
3608
3609
3611
246
254
262
258
264
270
246
254
262
258
264
270
Duration in
Degrees
@ .050
194
202
210
206
212
218
194
202
210
206
212
218
@ .200
111
118
125
118
124
130
115
123
130
124
130
136
Lobe
Lift
.294
.298
.302
.290
.294
.298
.312
.318
.324
.309
.314
.320
Tappet Lift
@ TDC
106°
.028
.036
.047
.043
.051
.060
.028
.036
.047
.043
.052
.060
110°
.020
.028
.036
.034
.041
.049
.020
.028
.037
.034
.041
.049
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.441
.447
.453
.435
.441
.447
.468
.477
.486
.464
.471
.480
1.6
.470
.477
.483
.464
.470
.477
.499
.509
.518
.494
.502
.512
1.7
.500
.507
.513
.493
.500
.507
.530
.541
.551
.525
.534
.544
THUMPR™ HYDRAULIC ROLLERS
The Thumpr™ lobe profiles are designed to optimize the character and sound, while providing excellent stability and a very
wide power range in hydraulic roller applications. Specific profiles are developed uniquely for intake and exhaust.
Rated
Camshaft Type Lobe # Duration
Thumpr™ Int.
Rated Duration @
.006" Tappet Lift
Thumpr™ Exh.
Rated Duration @
.006" Tappet Lift
16
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
3028
3022
3024
3026
3056
3058
3528
3532
3534
3536
3538
3552
3554
3556
275
283
291
299
307
315
275
283
291
299
307
283
291
299
@ .050
219
227
235
243
251
259
219
227
235
243
251
227
235
243
@ .200
134
142
150
157
165
173
133
140
148
156
164
139
146
154
.335
.341
.347
.354
.361
.368
.325
.331
.337
.344
.350
.321
.327
.334
106°
.058
.070
.082
.096
.110
.125
.058
.070
.082
.096
.111
.070
.082
.096
110°
.047
.058
.070
.082
.096
.110
.047
.058
.070
.082
.096
.058
.070
.082
1.5
.503
.512
.521
.531
.542
.552
.488
.497
.506
.516
.525
.482
.491
.501
3031
3043
3045
3047
3541
3543
295
303
311
319
295
303
233
241
249
257
233
241
142
149
157
165
139
147
.325
.331
.338
.345
.315
.321
.082
.094
.107
.120
.082
.094
.070
.082
.094
.107
.070
.082
.488
.497
.507
.518
.473
.482
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.6
.536
.546
.555
.566
.578
.589
.520
.530
.539
.550
.561
.514
.523
.534
1.7
.570
.580
.590
.602
.614
.626
.553
.563
.573
.585
.596
.546
.556
.568
.520
.553
.530
.563
.541
.575
.552
.587
.504
.536
.514
.546
continued on page 17
HYDRAULIC ROLLER
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
@ .050
@ .200
3545
311
249
155
.328
3547
319
257
164
.335
3563
303
241
145
.311
3565
311
249
153
.318
3567
319
257
161
.325
Thumpr™ Exh.
Rated Duration @
.006" Tappet Lift
Tappet Lift
@ TDC
106°
.107
.120
.094
.106
.119
110°
.094
.107
.082
.093
.106
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.492
.503
.467
.477
.488
1.6
.525
.536
.498
.509
.520
1.7
.558
.570
.529
.541
.553
XTREME ENERGY™ HYDRAULIC ROLLERS
These designs share all of the characteristics of the flat tappet lobes but we have added the new technology of CRC
(Constant Radius of Curvature) inverted radius of curvature ramp designs. COMP Cams® has enhanced this technique to
ensure durability with these most aggressive hydraulic roller designs. The high lift versions that have lobe numbers in the
3100s are more aggressive over the nose and will require more spring or less RPM. These lobes run well in street/strip
and marine applications. With more agressive and faster ramps they also provide good vacuum.
HYDRAULIC ROLLER
THUMPR™ HYDRAULIC ROLLERS cont.
Rated
Camshaft Type Lobe # Duration
Xtreme Energy™
Rated Duration @
.006" Tappet Lift
Small Block
Journal
Big Block
Journal
Duration in
Degrees
Lobe Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
3322
3323
3304
3310
3305
3302
3311
3188
3300
3312
3301
3190
3313
3314
3192
3315
3194
3316
3196
3317
3318
3319
244
249
252
252
256
258
258
258
262
264
266
266
270
276
276
282
282
288
288
294
300
306
@ .050
192
198
200
200
204
206
206
206
210
212
214
214
218
224
224
230
230
236
236
242
248
254
@ .200
89
104
113
122
116
124
128
132
126
133
129
141
139
145
152
151
157
157
162
164
171
178
.245
.265
.285
.315
.285
.305
.320
.336
.305
.325
.305
.353
.330
.335
.378
.340
.389
.347
.390
.360
.375
.387
106°
.026
.032
.034
.034
.039
.041
.041
.042
.046
.049
.052
.053
.058
.068
.069
.078
.078
.089
.090
.101
.114
.127
110°
.018
.024
.026
.026
.030
.032
.032
.032
.036
.039
.041
.042
.046
.055
.056
.064
.064
.075
.075
.086
.097
.110
1.5
.368
.398
.428
.473
.428
.458
.480
.504
.458
.488
.458
.530
.495
.503
.567
.510
.584
.521
.585
.540
.563
.581
1.6
.392
.424
.456
.504
.456
.488
.512
.538
.488
.520
.488
.565
.528
.536
.605
.544
.622
.555
.624
.576
.600
.619
1.7
.417
.451
.485
.536
.485
.519
.544
.571
.519
.553
.519
.600
.561
.570
.643
.578
.661
.590
.663
.612
.638
.658
3340
3341
3342
3343
3344
3345
3346
3347
3348
252
258
264
270
276
282
288
294
300
200
206
212
218
224
230
236
242
248
118
123
127
131
136
141
147
155
162
.300
.300
.300
.300
.300
.300
.306
.318
.329
.034
.042
.050
.058
.068
.078
.089
.100
.111
.026
.032
.039
.047
.055
.065
.075
.085
.096
.450
.450
.450
.450
.450
.450
.459
.477
.494
.480
.480
.480
.480
.480
.480
.490
.509
.526
.510
.510
.510
.510
.510
.510
.520
.541
.559
continued on page 18
W W W . C O M P C A M S . C O M
17
HYDRAULIC ROLLER
HYDRAULIC ROLLER
XTREME ENERGY HYDRAULIC ROLLERS cont.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
Big Block
Journal
3349
3414
3415
306
310
312
@ .050
254
258
260
@ .200
170
173
174
.341
.341
.341
106°
.123
.130
.133
110°
.108
.115
.118
1.5
.512
.512
.512
1.6
.546
.546
.546
1.7
.580
.580
.580
Ford Journal
3628
3610
3630
3611
3612
3632
3633
3613
3634
3635
3636
3637
3638
256
264
266
270
276
274
278
288
282
286
290
294
298
208
212
216
218
224
224
228
230
232
236
240
244
248
133
131
140
136
140
148
152
144
155
159
162
166
169
.333
.320
.340
.320
.320
.347
.352
.320
.353
.356
.359
.362
.365
.044
.050
.056
.058
.068
.069
.076
.078
.084
.092
.099
.107
.115
.033
.039
.044
.047
.055
.056
.062
.065
.069
.076
.084
.091
.099
.500
.480
.510
.480
.480
.521
.528
.480
.530
.534
.539
.543
.548
.533
.512
.544
.512
.512
.555
.563
.512
.565
.570
.574
.579
.584
.566
.544
.578
.544
.544
.590
.598
.544
.600
.605
.610
.615
.621
XTREME 4x4™ HYDRAULIC ROLLERS
Due to the allowances of lower engine speed, these designs are slightly faster than the original Xtreme Energy™ Hydraulic
Rollers. Great low and mid-range torque. They are our most aggressive hydraulic roller lobes and run well in street, off-road
and four-wheeling.
Rated
Camshaft Type Lobe # Duration
Duration in Degrees
Valve Lift @ "0" Lash
Lobe Lift Tappet Lift @ TDC Theoretical
Rocker Arm Ratio
@ .050
@ .200
106°
110°
3324
259
210
131
.316
.047
.036
3326
263
214
134
.316
.052
.041
3303
265
216
136
.316
.056
.044
3306
269
220
138
.316
.062
.049
3307
273
224
141
.316
.069
.056
3308
279
230
145
.316
.079
.065
3309
283
234
148
.316
.087
.072
Xtreme 4x4™
Rated Duration @
.006" Tappet Lift
Small Block
Journal
1.5
.474
.474
.474
.474
.474
.474
.474
1.6
.506
.506
.506
.506
.506
.506
.506
1.7
.537
.537
.537
.537
.537
.537
.537
XTREME ENERGY XFI™ HYDRAULIC ROLLERS
The Xtreme Energy XFI™ Series is designed for use with modern induction systems, heads, springs and rockers. The XFI™ intake lobes have more lift than the base Xtreme series, and the XFI™ exhaust lobes have more area under the curve, for better exhaust flow, than the base exhaust series. These are the first hydraulic flat tappet profiles designed for use with COMP
Cams® Beehive™ Valve Springs such as the #26915, #26918 & #26120. The combination of these profiles, the springs
and our very stiff Pro Magnum™ Rocker Arms in higher ratios, makes for the most revolutionary improvement in hydraulic
roller design to date by bringing the latest race winning technology to the street.
Rated
Camshaft Type Lobe # Duration
Xtreme XFI Int.
Rated Duration @
.006" Tappet Lift
™
3004
3010
3005
3011
250
252
254
256
Duration in
Degrees
@ .050
200
202
204
206
@ .200
126
128
130
132
Lobe
Lift
.342
.344
.345
.347
Tappet Lift
@ TDC
106°
.034
.036
.039
.041
110°
.025
.027
.029
.032
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.513
.516
.518
.521
1.6
.547
.550
.552
.555
1.7
.581
.585
.587
.590
continued on page 19
18
1 • 8 0 0 • 9 9 9 • 0 8 5 3
HYDRAULIC ROLLER
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
3002
3012
3003
3013
3006
3014
3007
3008
3015
3009
13080
3016
13081
13082
3017
13083
13084
3018
13085
13086
3019
13087
13088
3020
13089
13090
3021
258
260
262
264
266
268
270
272
274
276
278
280
282
284
286
288
290
292
294
296
298
300
302
304
306
308
310
@ .050
208
210
212
214
216
218
220
222
224
226
228
230
232
234
236
238
240
242
244
246
248
250
252
254
256
258
260
@ .200
134
136
137
139
141
143
145
147
149
150
152
154
156
157
159
161
163
165
166
168
170
172
174
176
178
180
182
.348
.350
.352
.353
.354
.356
.357
.357
.358
.359
.360
.360
.361
.361
.362
.363
.364
.365
.366
.366
.367
.368
.369
.370
.371
.372
.373
106°
.044
.047
.049
.052
.055
.058
.062
.065
.068
.072
.075
.079
.083
.087
.090
.094
.098
.102
.106
.110
.115
.119
.123
.127
.131
.136
.140
110°
.034
.036
.039
.041
.044
.047
.049
.052
.055
.058
.062
.065
.068
.072
.075
.079
.083
.087
.090
.094
.098
.102
.106
.111
.115
.119
.123
1.5
.522
.525
.528
.530
.531
.534
.536
.536
.537
.539
.540
.540
.542
.542
.543
.545
.546
.548
.549
.549
.551
.552
.554
.555
.557
.558
.560
3030
13130
13131
13132
3033
13133
13134
3034
13135
13136
Xtreme XFI™ Exh.
Rated Duration @ 3035
.006" Tappet Lift 13137
13138
3036
13139
13140
3037
13141
13142
3038
13143
13144
256
258
260
262
264
266
268
270
272
274
276
278
280
282
284
286
288
290
292
294
296
298
204
206
208
210
212
214
216
218
220
222
224
226
228
230
232
234
236
238
240
242
244
246
128
130
131
133
135
137
139
141
143
145
147
148
151
152
154
156
158
160
162
163
165
167
.333
.335
.337
.339
.341
.343
.345
.347
.349
.351
.353
.353
.354
.355
.356
.356
.357
.358
.359
.360
.361
.361
.040
.043
.045
.048
.050
.053
.056
.059
.063
.066
.069
.072
.076
.080
.083
.087
.091
.094
.098
.102
.106
.110
.031
.033
.035
.038
.040
.043
.045
.048
.051
.053
.056
.059
.063
.066
.069
.072
.076
.079
.083
.087
.091
.094
.500
.503
.506
.509
.512
.515
.518
.521
.524
.527
.530
.530
.531
.533
.534
.534
.536
.537
.539
.540
.542
.542
Xtreme XFI™ Int.
Rated Duration @
.006" Tappet Lift
W W W . C O M P C A M S . C O M
1.6
.557
.560
.563
.565
.566
.570
.571
.571
.573
.574
.576
.576
.578
.578
.579
.581
.582
.584
.586
.586
.587
.589
.590
.592
.594
.595
.597
1.7
.592
.595
.598
.600
.602
.605
.607
.607
.609
.610
.612
.612
.614
.614
.615
.617
.619
.621
.622
.622
.624
.626
.627
.629
.631
.632
.634
HYDRAULIC ROLLER
XTREME ENERGY XFI™ HYDRAULIC ROLLERS cont.
.533
.566
.536
.570
.539
.573
.542
.576
.546
.580
.549
.583
.552
.587
.555
.590
.558
.593
.562
.597
.565
.600
.565
.600
.566
.602
.568
.604
.570
.605
.570
.605
.571
.607
.573
.609
.574
.610
.576
.612
.578
.614
.578
.614
continued on page 20
19
HYDRAULIC ROLLER
HYDRAULIC ROLLER
XTREME ENERGY XFI™ HYDRAULIC ROLLERS cont.
Rated
Camshaft Type Lobe # Duration
Xtreme XFI™ Exh.
Rated Duration @
.006" Tappet Lift
3039
13145
13146
3040
13147
13148
3041
300
302
304
306
308
310
312
Duration in
Degrees
@ .050
248
250
252
254
256
258
260
@ .200
169
171
172
174
176
178
180
Lobe
Lift
.362
.363
.363
.364
.365
.366
.367
Tappet Lift
@ TDC
106°
.114
.118
.122
.126
.130
.134
.138
110°
.098
.102
.106
.110
.114
.118
.122
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.543
.545
.545
.546
.548
.549
.551
1.6
.579
.581
.581
.582
.584
.586
.587
1.7
.615
.617
.617
.619
.621
.622
.624
QXI HYDRAULIC ROLLERS
The QXI Series lobe profiles are designed to provide the highest available valve lift for modern cylinder head ports along with
excellent stability and the broadest possible power range in hydraulic roller applications. Designed for both street and racing
use, these lobes were developed in two degree intervals to allow small tuning variations between the long and short runners of
single 4bbl type manifolds.
Rated
Camshaft Type Lobe # Duration
QXI
Rated Duration @
.006" Tappet Lift
Small Block Journal or Larger
13440
13441
13442
13443
13444
13445
13446
13447
13448
13449
13450
13451
13452
13453
13454
13455
13456
13457
13458
13459
13460
267
269
271
273
275
277
279
281
283
285
287
289
291
293
295
297
299
301
303
305
307
Duration in
Degrees
@ .050
215
217
219
221
223
225
227
229
231
233
235
237
239
241
243
245
247
249
251
253
255
@ .200
137
139
141
142
144
146
148
150
152
154
156
158
160
162
164
166
168
170
172
174
176
Lobe
Lift
.373
.375
.377
.379
.381
.383
.385
.387
.389
.391
.393
.395
.397
.398
.399
.399
.399
.399
.399
.399
.399
Tappet Lift
@ TDC
106°
.054
.057
.060
.063
.067
.070
.073
.077
.080
.084
.087
.091
.095
.099
.103
.106
.110
.114
.118
.122
.126
110°
.043
.046
.049
.051
.054
.057
.060
.064
.067
.070
.073
.077
.080
.084
.087
.091
.095
.099
.103
.106
.110
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.560
.563
.566
.569
.572
.575
.578
.581
.584
.587
.590
.593
.596
.597
.599
.599
.599
.599
.599
.599
.599
1.6
.597
.600
.603
.606
.610
.613
.616
.619
.622
.626
.629
.632
.635
.637
.638
.638
.638
.638
.638
.638
.638
1.7
.634
.638
.641
.644
.648
.651
.655
.658
.661
.665
.668
.672
.675
.677
.678
.678
.678
.678
.678
.678
.678
QXX HYDRAULIC ROLLERS
The QXX Series lobe profiles are based off of the QXI series but are even more stable, have slightly less lobe lift and are softer off the seat for either exhaust lobe use or as intakes in even higher engine speed applications. Designed for both street
and racing use, these lobes were developed in two degree intervals to allow small tuning variations between the long and
short runners of single 4bbl type manifolds. Rated
Camshaft Type Lobe # Duration
QXX
Rated Duration @
.006" Tappet Lift
Small Block Journal or Larger
13470
13471
13472
277
279
281
Duration in
Degrees
@ .050
223
225
227
@ .200
142
144
146
Lobe
Lift
.363
.365
.367
Tappet Lift
@ TDC
106°
.066
.070
.073
110°
.054
.057
.060
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.545
.548
.551
1.6
.581
.584
.587
1.7
.617
.621
.624
continued on page 21
20
1 • 8 0 0 • 9 9 9 • 0 8 5 3
HYDRAULIC ROLLER
Rated
Camshaft Type Lobe # Duration
13473
13474
13475
13476
13477
13478
13479
QXX
13480
Rated Duration @ 13481
.006" Tappet Lift
Small Block Jour- 13482
13483
nal or Larger
13484
13485
13486
13487
13488
13489
13490
13491
13492
283
285
287
289
291
293
295
297
299
301
303
305
307
309
311
313
315
317
319
321
Duration in
Degrees
@ .050
229
231
233
235
237
239
241
243
245
247
249
251
253
255
257
259
261
263
265
267
@ .200
148
150
152
154
156
158
160
162
164
166
168
170
172
174
175
177
179
181
183
185
Lobe
Lift
.369
.371
.373
.375
.377
.379
.381
.383
.385
.387
.388
.389
.389
.389
.389
.389
.389
.389
.389
.389
Tappet Lift
@ TDC
106°
.076
.080
.083
.087
.090
.094
.098
.101
.105
.109
.113
.117
.121
.125
.128
.132
.136
.140
.144
.148
110°
.063
.066
.070
.073
.076
.080
.083
.087
.090
.094
.098
.101
.105
.109
.113
.117
.120
.124
.128
.132
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.554
.557
.560
.563
.566
.569
.572
.575
.578
.581
.582
.584
.584
.584
.584
.584
.584
.584
.584
.584
1.6
.590
.594
.597
.600
.603
.606
.610
.613
.616
.619
.621
.622
.622
.622
.622
.622
.622
.622
.622
.622
1.7
.627
.631
.634
.638
.641
.644
.648
.651
.655
.658
.660
.661
.661
.661
.661
.661
.661
.661
.661
.661
HYDRAULIC ROLLER
QXX HYDRAULIC ROLLERS cont.
QNI HYDRAULIC ROLLERS
The QNI Series lobe profiles are based off of the QXI series but are softened just enough to grind accurately even with lobe
base circle sizes as small as .900" diameter, as is sometimes required in long stroke Small Block Chevy applications.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.5
1.6
1.7
13540
279
226
147
.384
.071
.059
.576
.614
.653
13541
281
228
149
.386
.075
.062
.579
.618
.656
13542
283
230
151
.388
.078
.065
.582
.621
.660
13543
285
232
153
.390
.082
.068
.585
.624
.663
13544
287
234
155
.392
.085
.072
.588
.627
.666
13545
289
236
157
.394
.089
.075
.591
.630
.670
13546
291
238
159
.396
.092
.078
.594
.634
.673
QNI
293
240
161
.397
.096
.082
.596
.635
.675
Rated Duration @ 13547
295
242
163
.398
.100
.085
.597
.637
.677
.006" Tappet Lift 13548
.900" or .950"
13549
297
244
165
.398
.104
.089
.597
.637
.677
BCD
13550
299
246
167
.398
.108
.092
.597
.637
.677
13551
301
248
169
.398
.112
.096
.597
.637
.677
13552
303
250
170
.398
.115
.100
.597
.637
.677
13553
305
252
172
.398
.119
.104
.597
.637
.677
13554
307
254
174
.398
.123
.108
.597
.637
.677
13555
309
256
176
.398
.127
.111
.597
.637
.677
13556
311
258
178
.398
.131
.115
.597
.637
.677
13557
313
260
180
.398
.135
.119
.597
.637
.677
13558
315
262
182
.398
.139
.123
.597
.637
.677
W W W . C O M P C A M S . C O M
21
HYDRAULIC ROLLER
HYDRAULIC ROLLER
QNX HYDRAULIC ROLLERS
The QNX Series lobe profiles are based off of the new QXX series but are softened just enough to grind accurately even with
lobe base circle sizes as small as .900" diameter as is sometimes required in long stroke Small Block Chevy applications.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
13570
13571
13572
13573
QNX
13574
Rated Duration @ 13575
.006" Tappet Lift
13576
.900" or .950"
13577
BCD
13578
13579
13580
13581
13582
13583
289
291
293
295
297
299
301
303
305
307
309
311
313
315
@ .050
234
236
238
240
242
244
246
248
250
252
254
256
258
260
@ .200
153
155
157
159
161
163
165
167
169
171
172
174
176
178
.374
.376
.378
.380
.382
.384
.386
.387
.388
.388
.388
.388
.388
.388
106°
.084
.087
.091
.094
.098
.101
.105
.109
.113
.116
.120
.124
.128
.132
110°
.070
.074
.077
.080
.084
.087
.091
.094
.098
.101
.105
.109
.113
.116
1.5
.561
.564
.567
.570
.573
.576
.579
.581
.582
.582
.582
.582
.582
.582
1.6
.598
.602
.605
.608
.611
.614
.618
.619
.621
.621
.621
.621
.621
.621
1.7
.636
.639
.643
.646
.649
.653
.656
.658
.660
.660
.660
.660
.660
.660
13584
13585
13586
13587
13588
317
319
321
323
325
262
264
266
268
270
180
182
183
185
187
.388
.388
.388
.388
.388
.136
.140
.143
.147
.151
.120
.124
.128
.132
.135
.582
.582
.582
.582
.582
.621
.621
.621
.621
.621
.660
.660
.660
.660
.660
QNX
Rated Duration @
.006" Tappet Lift
.900" or .950"
BCD
XTREME MARINE™ HYDRAULIC ROLLERS
These profiles use the same design techniques of the base Xtreme Energy™ Hydraulic Rollers but have been optimized to
increase power and durability when run at steady RPM for extended periods of time. Specifically designed for Big Blocks with
heavier valve train components.
Rated
Camshaft Type Lobe # Duration
Xtreme Marine™
Rated Duration @
.006" Tappet Lift
Big Block Journal
22
3354
3355
3356
3357
3358
3359
3362
3363
3364
286
292
298
304
310
316
322
328
334
Duration in
Degrees
@ .050
230
236
242
248
254
260
266
272
278
@ .200
142
146
153
159
163
169
174
179
185
Lobe
Lift
.322
.322
.333
.333
.338
.338
.342
.347
.353
Tappet Lift
@ TDC
106°
.074
.085
.095
.106
.116
.126
.136
.146
.155
110°
.062
.071
.081
.092
.101
.112
.122
.132
.142
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.483
.483
.500
.500
.507
.507
.513
.521
.530
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.6
.515
.515
.533
.533
.541
.541
.547
.555
.565
1.7
.547
.547
.566
.566
.575
.575
.581
.590
.600
HYDRAULIC ROLLER
HYDRAULIC ROLLER
XTREME MARINE™ HYDRAULIC ROLLERS − HIGH LIFT
These have the same ramp designs as the lower lift Xtreme Marine™ designs but have higher lift to enhance power output with cylinder head and engine modifications. Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Xtreme Marine™
@ .050
@ .200
106°
110°
1.6
1.7
High Lift
322
266
182
.380
.142
.126
.570
.608
Rated Duration @ 3374
.006" Tappet Lift 3375
326
270
186
.380
.149
.134
.570
.608
Big Block Journal 3447
330
274
190
.380
.157
.141
.570
.608
1.8
.646
.646
.646
Xtreme Marine™
High Lift
Rated Duration @
.006" Tappet Lift
Big Block Journal
.360
.360
.350
.360
.360
.350
.380
.380
.360
.380
.380
.380
106°
.081
.085
.088
.088
.092
.099
.100
.107
.111
.119
.126
.134
110°
.068
.071
.075
.075
.078
.085
.085
.092
.096
.103
.111
.118
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
.612
.612
.595
.612
.612
.595
.646
.646
.612
.646
.646
.646
290
292
294
294
296
300
300
304
306
308
314
318
@ .200
152
154
154
156
157
159
163
167
166
171
175
179
Tappet Lift
@ TDC
1.6
.576
.576
.560
.576
.576
.560
.608
.608
.576
.608
.608
.608
3473
3474
3410
3475
3376
3411
3479
3370
3377
3371
3372
3373
@ .050
234
236
238
238
240
244
244
248
250
254
258
262
Lobe
Lift
1.5
.540
.540
.525
.540
.540
.525
.570
.570
.540
.570
.570
.570
HUC HYDRAULIC ROLLERS
The HUC Series Hydraulic Rollers are very smooth designs intended for high RPM use with heavy valves. These are very
similar to the Xtreme Marine™ High Lift Series but may be slightly more stable.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
13045
13047
13048
HUC
13050
Rated Duration @
13051
.006" Tappet Lift
13052
13053
13054
13056
13057
286
290
292
294
298
302
306
310
318
322
@ .050
231
235
237
239
243
247
251
255
263
267
@ .200
149
154
156
158
162
166
169
173
181
184
.352
.359
.359
.365
.369
.372
.372
.372
.372
.372
106°
.079
.086
.089
.093
.100
.108
.115
.123
.139
.139
110°
.066
.072
.075
.079
.086
.093
.100
.108
.123
.123
1.6
.563
.574
.574
.584
.590
.595
.595
.595
.595
.595
1.7
.598
.610
.610
.621
.627
.632
.632
.632
.632
.632
1.8
.634
.646
.646
.657
.664
.670
.670
.670
.670
.670
13064
13065
13066
13067
13068
13069
13074
13075
310
314
318
322
326
330
334
338
255
259
263
267
271
275
279
283
175
179
183
187
190
194
198
202
.400
.400
.400
.400
.400
.400
.400
.400
.124
.132
.140
.148
.156
.164
.172
.180
.108
.116
.124
.132
.140
.148
.156
.164
.640
.640
.640
.640
.640
.640
.640
.640
.680
.680
.680
.680
.680
.680
.680
.680
.720
.720
.720
.720
.720
.720
.720
.720
HUC High Lift
Rated Duration @
.006" Tappet Lift
W W W . C O M P C A M S . C O M
23
HYDRAULIC ROLLER
HYDRAULIC ROLLER
XTREME RPM FOR LS1
Designed with Xtreme Energy™ technology to provide excellent power with the LS1’s enhanced cylinder head design and
high RPM performance. These provide outstanding low RPM torque with increased stability when coupled with the LS1’s
larger base circle and 1.7:1+ rocker ratios. High lift versions are excellent for use with improved heads, manifolds and COMP
#26915 and #26918 valve springs.
Rated
Camshaft Type Lobe # Duration
Xtreme RPM for
LS1
Rated Duration @
.006" Tappet Lift
LS1 55mm
Journal
Xtreme RPM for
LS1 High Lift
Rated Duration @
.006" Tappet Lift
LS1 55mm
Journal
24
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
3750
3751
3766
3752
3767
3753
3754
3755
3735
3756
3757
3659
260
266
270
272
274
278
280
282
284
286
290
309
@ .050
206
212
216
218
220
224
226
228
230
232
236
256
@ .200
121
126
130
132
134
137
139
141
142
144
147
166
.302
.306
.308
.310
.312
.314
.315
.316
.317
.318
.320
.325
106°
.043
.051
.056
.059
.062
.069
.072
.075
.078
.082
.088
.123
110°
.034
.040
.045
.048
.051
.056
.059
.062
.065
.069
.075
.109
1.5
.453
.459
.462
.465
.468
.471
.473
.474
.476
.477
.480
.488
1.6
.483
.490
.493
.496
.499
.502
.504
.506
.507
.509
.512
.520
1.7
.513
.520
.524
.527
.530
.534
.536
.537
.539
.541
.544
.553
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3706
3705
3652
3653
3654
3655
3656
3657
3658
3660
3661
3662
3663
3666
3667
3668
261
263
265
267
269
271
273
275
277
279
281
283
285
287
289
291
293
295
297
299
301
303
305
307
309
311
315
319
323
208
210
212
214
216
218
220
222
224
226
228
230
232
234
236
238
240
242
244
246
248
250
252
254
256
258
262
266
270
128
129
131
133
135
136
138
140
142
143
145
147
148
150
152
154
156
158
160
162
164
166
168
169
170
172
174
177
180
.326
.327
.328
.329
.330
.331
.332
.333
.334
.335
.336
.337
.338
.339
.340
.344
.346
.348
.350
.350
.350
.350
.350
.350
.350
.350
.350
.350
.350
.045
.048
.051
.054
.056
.059
.062
.066
.069
.072
.075
.079
.082
.086
.089
.093
.096
.100
.103
.107
.111
.114
.118
.122
.125
.129
.135
.141
.147
.036
.039
.041
.043
.045
.048
.051
.054
.056
.059
.062
.066
.069
.072
.075
.079
.082
.085
.089
.092
.097
.100
.103
.107
.110
.114
.120
.127
.133
.489
.491
.492
.494
.495
.497
.498
.500
.501
.503
.504
.506
.507
.509
.510
.516
.519
.522
.525
.525
.525
.525
.525
.525
.525
.525
.525
.525
.525
.522
.523
.525
.526
.528
.530
.531
.533
.534
.536
.538
.539
.541
.542
.544
.550
.554
.557
.560
.560
.560
.560
.560
.560
.560
.560
.560
.560
.560
.554
.556
.558
.559
.561
.563
.564
.566
.568
.570
.571
.573
.575
.576
.578
.585
.588
.592
.595
.595
.595
.595
.595
.595
.595
.595
.595
.595
.595
1 • 8 0 0 • 9 9 9 • 0 8 5 3
HYDRAULIC ROLLER
These profiles use the Xtreme RPM opening with the faster XE-R style closing. These should be stable to higher RPM than
the XE-R and the controlled opening rates may work well in some applications.
Rated
Camshaft Type Lobe # Duration
Xtreme RPR
Rated Duration @
.006" Tappet Lift
3669
3670
3671
3672
3673
3674
3675
3676
269
271
273
275
277
279
281
283
Duration in
Degrees
@ .050
217
219
221
223
225
227
229
231
@ .200
137
139
140
142
144
145
147
149
Lobe
Lift
.331
.332
.333
.334
.335
.336
.337
.338
Tappet Lift
@ TDC
106°
.059
.062
.066
.069
.072
.075
.079
.082
110°
.048
.051
.054
.056
.059
.062
.066
.069
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.497
.498
.500
.501
.503
.504
.506
.507
1.6
.530
.531
.533
.534
.536
.538
.539
.541
1.7
.563
.564
.566
.568
.570
.571
.573
.575
HYDRAULIC ROLLER
XTREME RPR HYDRAULIC ROLLERS
XTREME ENERGY™ XE-R FOR LS1
The XE-R designs are the most aggressive COMP Cams® hydraulic roller ramps to date. They are quicker off and on the seat than
the original Xtreme Energy™ Series, yet they are still stable with rigid valve train and optimized spring selection. These profiles provide
even more area than the comparable Small Block Chevrolet designs that are often used by other companies to "grow" a more aggressive lobe for LS1 applications.
Rated
Camshaft Type Lobe # Duration
XE-R for LS1
Rated Duration @
.006" Tappet Lift
LS1 55mm
Journal
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
269
271
273
275
277
279
281
283
285
287
289
291
293
295
297
Duration in
Degrees
@ .050
220
222
224
226
228
230
232
234
236
238
240
242
244
246
248
@ .200
143
144
146
147
149
151
153
155
157
159
161
163
165
167
169
Lobe
Lift
.342
.342
.342
.344
.346
.348
.350
.352
.354
.356
.358
.359
.360
.361
.362
Tappet Lift
@ TDC
106°
.062
.065
.069
.073
.076
.080
.083
.087
.091
.095
.099
.102
.106
.110
.114
110°
.049
.052
.055
.059
.062
.065
.069
.072
.076
.079
.083
.087
.091
.095
.098
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.513
.513
.513
.516
.519
.522
.525
.528
.531
.534
.537
.539
.540
.542
.543
1.6
.547
.547
.547
.550
.554
.557
.560
.563
.566
.570
.573
.574
.576
.578
.579
1.7
.581
.581
.581
.585
.588
.592
.595
.598
.602
.605
.609
.610
.612
.614
.615
GO CUSTOM
Look no further than COMP Cams® for the perfect camshaft for your application. We offer thousands of ready-to ship
cams that are sure to meet your needs. But what if you don’t see exactly what you’re looking for in our part numbered
catalog selection? No problem. COMP Cams® can custom grind a cam that is optimized to your exact specifications and
have you up and running in less than 48 hours. With over three decades of
valve train engineering expertise, COMP® can give you
exactly what you want when you want it.
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W W W . C O M P C A M S . C O M
25
HYDRAULIC ROLLER
HYDRAULIC ROLLER
XTREME ENERGY™ LSL HYDRAULIC ROLLERS FOR LS1
The LSL Series has been designed with enhanced characteristics from our latest professional drag racing profiles. These
have excellent ramp quickness but are designed in a way to improve stability over other designs with such short seat timing. The increased lift works well with the latest Gen III and LS cylinder head port designs by providing excellent area above
1/2" valve lift.
Rated
Camshaft Type Lobe # Duration
13013
13093
13014
13094
13015
13095
13016
13096
13017
LSL for LS1
13097
Rated Duration @ 13018
.006" Tappet Lift
13041
LS1 55mm
13019
Journal
13099
13020
13021
13022
13023
13024
13025
13026
13027
13028
13029
261
263
265
267
269
271
273
275
277
279
281
283
285
287
289
293
297
301
305
309
313
317
321
325
Duration in
Degrees
@ .050
211
213
215
217
219
221
223
225
227
229
231
233
235
237
239
243
247
251
255
259
263
267
271
275
@ .200
135
137
139
141
143
145
147
149
151
152
154
156
158
160
162
166
169
173
176
180
183
187
190
193
Lobe
Lift
.353
.354
.355
.356
.357
.358
.359
.360
.361
.362
.363
.364
.365
.366
.367
.367
.367
.367
.367
.367
.367
.367
.367
.367
Tappet Lift
@ TDC
106°
.048
.051
.054
.057
.060
.064
.067
.071
.074
.078
.081
.085
.089
.093
.096
.105
.113
.121
.129
.137
.145
.153
.160
.167
110°
.037
.040
.042
.045
.048
.051
.054
.057
.060
.064
.067
.071
.074
.078
.081
.089
.097
.105
.113
.121
.129
.137
.144
.151
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.6
.565
.566
.568
.570
.571
.573
.574
.576
.578
.579
.581
.582
.584
.586
.587
.587
.587
.587
.587
.587
.587
.587
.587
.587
1.7
.600
.602
.604
.605
.607
.609
.610
.612
.614
.615
.617
.619
.621
.622
.624
.624
.624
.624
.624
.624
.624
.624
.624
.624
1.8
.635
.637
.639
.641
.643
.644
.646
.648
.650
.652
.653
.655
.657
.659
.661
.661
.661
.661
.661
.661
.661
.661
.661
.661
XTREME ENERGY™ LXL HYDRAULIC ROLLERS FOR LS1
The LXL Series is based off the popular LSL profiles but are optimized with lower acceleration and a softer closing ramp for less
valve train noise and better stability with higher (1.8:1+) ratio rocker arms. These profiles are an excellent choice on the exhaust
when used with an LSL intake and perform well for both the intake and exhaust when used in either LS7 or other high ratio applications. These also are a great choice for road race type engines that require extended use at high engine speeds.
Rated
Camshaft Type Lobe # Duration
13155
13156
LXL for LS1
Rated Duration @ 13157
.006" Tappet Lift 13158
LS1 55mm
13159
Journal
13160
13161
13162
13163
266
270
274
278
282
286
290
294
298
Duration in
Degrees
@ .050
214
218
222
226
230
234
238
242
246
@ .200
136
139
143
147
151
155
159
162
166
Lobe
Lift
.350
.352
.354
.356
.358
.360
.362
.362
.362
Tappet Lift
@ TDC
106°
.053
.059
.065
.072
.079
.086
.094
.101
.109
110°
.042
.047
.053
.059
.065
.072
.079
.086
.093
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.6
.560
.563
.566
.570
.573
.576
.579
.579
.579
1.7
.595
.598
.602
.605
.609
.612
.615
.615
.615
1.8
.630
.634
.637
.641
.644
.648
.652
.652
.652
continued on page 27
26
1 • 8 0 0 • 9 9 9 • 0 8 5 3
HYDRAULIC ROLLER
Rated
Camshaft Type Lobe # Duration
13164
LXL for LS1
13165
Rated Duration @
.006" Tappet Lift 13166
LS1 55mm
13167
Journal
13168
13169
13170
302
306
310
314
318
322
326
Duration in
Degrees
@ .050
250
254
258
262
266
270
274
@ .200
170
173
176
179
182
186
189
Lobe
Lift
.362
.362
.362
.362
.362
.362
.362
Tappet Lift
@ TDC
106°
.117
.124
.132
.139
.146
.153
.160
110°
.101
.109
.116
.124
.131
.138
.145
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.6
.579
.579
.579
.579
.579
.579
.579
1.7
.615
.615
.615
.615
.615
.615
.615
1.8
.652
.652
.652
.652
.652
.652
.652
XTREME ENERGY™ LSK HYDRAULIC ROLLERS FOR LS1
HYDRAULIC ROLLER
XTREME ENERGY™ LXL HYDRAULIC ROLLERS FOR LS1 cont.
The LSK Series has been designed with enhanced characteristics from our latest professional drag racing profiles. These
have excellent ramp quickness. They are VERY hard on parts and not generally recommended in street applications! Rated
Camshaft Type Lobe # Duration
LSK for LS1
Rated Duration @
.006" Tappet Lift
LS1 55mm
Journal
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
265
269
273
277
281
285
289
293
297
301
305
309
313
Duration in
Degrees
@ .050
215
219
223
227
231
235
239
243
247
251
255
259
263
@ .200
142
145
149
153
156
160
164
168
171
175
179
183
186
Lobe
Lift
.370
.372
.374
.376
.378
.380
.382
.384
.386
.388
.390
.390
.390
Tappet Lift
@ TDC
106°
.054
.060
.066
.074
.081
.089
.096
.104
.113
.121
.130
.138
.146
110°
.042
.048
.054
.060
.067
.074
.081
.089
.096
.104
.113
.121
.129
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.6
.592
.595
.598
.602
.605
.608
.611
.614
.618
.621
.624
.624
.624
1.7
.629
.632
.636
.639
.643
.646
.649
.653
.656
.660
.663
.663
.663
1.8
.666
.670
.673
.677
.680
.684
.688
.691
.695
.698
.702
.702
.702
XTREME ENERGY™ VVI HYDRAULIC ROLLERS
The VVI Series is based off the popular LSL profiles but are optimized for increase piston to valve clearance and more allowable advance in variable valve timing applications (GM LS and Dodge Hemi). These are intended as intake lobes and result
in approximately .008" more tappet clearance at TDC compared to a 1° larger LSL profile or about the same clearance
as a 5° smaller LSL design.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.6
1.7
1.8
13180
258
210
133
.356
.041
.030
.570
.605
.641
Xtreme Energy
VVI
13181
262
214
137
.358
.046
.035
.573
.609
.644
Rated Duration @ 13182
266
218
141
.360
.052
.040
.576
.612
.648
.006" Tappet Lift 13183
270
222
145
.362
.058
.046
.579
.615
.652
55mm+ Journal
13184
274
226
149
.364
.065
.052
.582
.619
.655
™
W W W . C O M P C A M S . C O M
27
HYDRAULIC ROLLER
HYDRAULIC ROLLER
LSN & LSD HYDRAULIC ROLLERS FOR DOD
These two series are designed for GM LS applications with Displacement on Demand. Because of extra travel of the deactivation lifter seat before it locks in lock mode, these profiles must be designed differently than the non-cylinder deactivation
lobes. The result is that the LSD "Deac" profiles look more like solid lifter profiles as that motion is akin to about .005" lash
at the tappet. The LSN "non-Deac" profiles are more like standard hydraulic roller designs at the seat but matched to the
LSN profiles over the nose. NOTE: Cylinders 1-4-6-7 are the "Deac" or Deactivation cylinders and 2-3-5-6 are the "NonDeac" or Non-Deactivation" or cylinders.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
13299
13300
13301
13302
13303
13304
13305
13306
13307
258
262
266
270
274
278
282
286
290
@ .050
206
210
214
218
222
226
230
234
238
@ .200
119
123
126
130
133
137
140
144
147
.294
.294
.294
.294
.294
.294
.294
.294
.294
106°
.042
.047
.053
.059
.065
.072
.079
.086
.092
110°
.031
.037
.042
.048
.053
.059
.065
.072
.079
1.6
.470
.470
.470
.470
.470
.470
.470
.470
.470
1.7
.500
.500
.500
.500
.500
.500
.500
.500
.500
1.8
.529
.529
.529
.529
.529
.529
.529
.529
.529
13310
LSD (Deac Cyls) 13311
Rated Duration @ 13312
.006" Tappet Lift
55mm Journal 13313
13314
.7756" BCR
13315
274
278
282
286
290
294
212
216
220
224
228
232
123
127
130
133
137
140
.294
.294
.294
.294
.294
.294
.047
.053
.059
.065
.072
.079
.037
.042
.048
.053
.059
.065
.470
.470
.470
.470
.470
.470
.500
.500
.500
.500
.500
.500
.529
.529
.529
.529
.529
.529
LSD (Deac Cyls) 13316
Rated Duration @
.006" Tappet Lift 13317
55mm Journal
13318
.7756" BCR
298
236
144
.294
.086
.072
.470
.500
.529
302
240
147
.294
.092
.079
.470
.500
.529
306
244
151
.294
.099
.085
.470
.500
.529
LSN
(Non-Deac Cyls)
Rated Duration @
.006" Tappet Lift
55mm Journal
.7756" BCR
EHI EHX HYDRAULIC ROLLERS
The EHI (intake) and EHX (exhaust) Series are higher ratio versions of the DHI and DHX hybrid hydraulic/solid roller designs.
These are intended for race applications that may see some street use or for other special applications with their primary emphasis on performance without compromise for noise concerns. 27 MAI intake and 30 MAI exhaust. 2.036" Journal MINIMUM.
Rated
Camshaft Type Lobe # Duration
12854
12856
12858
EHI
12668
Rated Duration @
.006" Tappet Lift 12670
12672
12674
12676
12678
12680
28
270
274
278
282
286
290
294
298
302
306
Duration in
Degrees
@ .050
219
223
227
231
235
239
243
247
251
255
@ .200
143
147
151
154
158
162
165
169
173
176
Lobe
Lift
.371
.373
.375
.375
.375
.375
.375
.375
.375
.375
Tappet Lift
@ TDC
106°
.060
.067
.073
.081
.088
.096
.104
.112
.120
.128
110°
.048
.054
.060
.067
.073
.081
.088
.096
.104
.112
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.6
.631
.634
.638
.638
.638
.638
.638
.638
.638
.638
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.7
1.8
.668
.705
.671
.709
.675
.713
.675
.713
.675
.713
.675
.713
.675
.713
.675
.713
.675
.713
.675
.713
continued on page 29
HYDRAULIC ROLLER
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
12682
EHI
Rated Duration @ 12684
.006" Tappet Lift 12686
12846
12848
310
314
318
322
326
@ .050
259
263
267
271
275
@ .200
180
183
187
190
194
.375
.375
.375
.375
.375
106°
.136
.144
.152
.159
.166
110°
.120
.128
.136
.143
.151
1.6
.638
.638
.638
.638
.638
1.7
.675
.675
.675
.675
.675
1.8
.713
.713
.713
.713
.713
12864
12866
12868
12690
12692
12694
EHX
12696
Rated Duration @
.006" Tappet Lift 12698
12700
12702
12704
12874
12876
12878
292
296
300
304
308
312
316
320
324
328
332
336
340
344
233
237
241
245
249
253
257
261
265
269
273
277
281
285
153
157
161
164
168
172
176
179
183
186
190
193
197
200
.373
.375
.375
.375
.375
.375
.375
.375
.375
.375
.375
.375
.375
.375
.082
.090
.096
.105
.112
.120
.128
.136
.144
.151
.159
.166
.173
.180
.069
.076
.082
.090
.097
.105
.112
.120
.128
.135
.143
.150
.158
.165
.634
.638
.638
.638
.638
.638
.638
.638
.638
.638
.638
.638
.638
.638
.671
.675
.675
.675
.675
.675
.675
.675
.675
.675
.675
.675
.675
.675
.709
.713
.713
.713
.713
.713
.713
.713
.713
.713
.713
.713
.713
.713
HYDRAULIC ROLLER
EHI EHX HYDRAULIC ROLLERS cont.
DHI DHX HYDRAULIC ROLLERS
The DHI (intake) and DHX (exhaust) Series are a hybrid hydraulic or tight lash solid roller design, based primarily on performance without compromise for noise concerns. These are intended for race applications that may see some street use
or for other special applications. 26 MAI intake and 29 MAI exhaust. 55mm Journal MINIMUM.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
12600
12602
12608
12610
12612
DHI
Rated Duration @ 12614
.006" Tappet Lift 12616
12618
12104
12106
12108
12110
12112
275
279
283
287
291
295
299
303
307
311
315
319
323
@ .050
225
229
233
237
241
245
249
253
257
261
265
269
273
@ .200
152
156
160
164
167
171
175
178
182
186
189
193
197
.385
.389
.393
.397
.397
.397
.397
.397
.397
.397
.397
.397
.397
106°
.071
.078
.085
.093
.102
.110
.118
.127
.136
.144
.152
.160
.168
110°
.057
.064
.071
.078
.085
.093
.102
.110
.118
.127
.135
.143
.152
1.6
.616
.622
.629
.635
.635
.635
.635
.635
.635
.635
.635
.635
.635
12642
12644
DHX
12646
Rated Duration @
.006" Tappet Lift 12630
12632
12634
293
297
301
305
309
313
235
239
243
247
251
255
158
162
166
170
174
178
.385
.389
.393
.397
.397
.397
.087
.095
.102
.110
.118
.126
.073
.080
.087
.094
.102
.110
.616
.622
.629
.635
.635
.635
W W W . C O M P C A M S . C O M
1.7
.655
.661
.668
.675
.675
.675
.675
.675
.675
.675
.675
.675
.675
1.8
.693
.700
.707
.715
.715
.715
.715
.715
.715
.715
.715
.715
.715
.655
.693
.661
.700
.668
.707
.675
.715
.675
.715
.675
.715
continued on page 30
29
HYDRAULIC ROLLER
HYDRAULIC ROLLER
DHI DHX HYDRAULIC ROLLERS cont.
Rated
Camshaft Type Lobe # Duration
12636
12638
DHX
Rated Duration @ 12134
.006" Tappet Lift 12136
12138
12140
12142
317
321
325
329
333
337
341
Duration in
Degrees
@ .050
259
263
267
271
275
279
283
@ .200
182
185
189
193
196
200
204
Lobe
Lift
.397
.397
.397
.397
.397
.397
.397
Tappet Lift
@ TDC
106°
.135
.144
.152
.160
.168
.176
.184
110°
.119
.127
.135
.143
.152
.160
.168
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.6
.635
.635
.635
.635
.635
.635
.635
1.7
.675
.675
.675
.675
.675
.675
.675
1.8
.715
.715
.715
.715
.715
.715
.715
CHEATER HR LIFT RULE COMPETITION HYDRAULIC ROLLERS
The Cheater HR Lift Rule profiles can be run with either hydraulic roller lifters or with solid roller lifters and tight (.010"
to .016") lash settings. These are very popular in Mustang lift rule class racing. These lobes are very aggressive and are
"race only" designed lobes.
Rated
Camshaft Type Lobe # Duration
Cheater HR
Lift Rule
Rated Duration @
.006" Tappet Lift
RACE ONLY!
30
3390
3391
3392
3393
3394
3395
3396
3397
3335
3496
3497
3498
3336
3338
3337
3339
3284
3282
3285
3283
3299
3297
3298
3295
3296
3404
3400
3398
3384
3399
3385
3386
3387
3388
289
291
293
295
297
299
301
303
321
325
327
329
307
311
319
329
307
311
319
323
289
297
305
297
301
285
289
293
297
301
305
309
313
317
Duration in
Degrees
@ .050
236
238
240
242
244
246
248
250
268
272
274
276
254
258
266
270
254
258
266
270
236
244
252
244
248
232
236
240
244
248
252
256
260
264
@ .200
148
150
152
154
156
158
160
162
180
184
186
188
166
170
178
182
167
171
179
183
150
158
166
159
163
147
151
155
159
163
167
171
175
179
Lobe
Lift
.312
.312
.312
.312
.312
.312
.312
.312
.312
.312
.312
.312
.316
.316
.316
.316
.323
.323
.323
.323
.329
.329
.329
.334
.334
.341
.341
.341
.341
.341
.341
.341
.341
.341
Tappet Lift
@ TDC
106°
.085
.088
.091
.095
.098
.102
.105
.109
.142
.149
.153
.157
.116
.123
.138
.146
.116
.124
.139
.146
.085
.098
.113
.099
.106
.078
.085
.091
.098
.106
.113
.120
.128
.136
110°
.072
.075
.078
.081
.085
.088
.091
.095
.127
.134
.138
.142
.102
.109
.123
.139
.102
.109
.124
.131
.072
.085
.098
.085
.092
.065
.072
.078
.085
.091
.098
.106
.113
.120
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio Ratio
1.5
.468
.468
.468
.468
.468
.468
.468
.468
.468
.468
.468
.468
.474
.474
.474
.474
.485
.485
.485
.485
.494
.494
.494
.501
.501
.512
.512
.512
.512
.512
.512
.512
.512
.512
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.6
1.7
.499
.530
.499
.530
.499
.530
.499
.530
.499
.530
.499
.530
.499
.530
.499
.530
.499
.530
.499
.530
.499
.530
.499
.530
.506
.537
.506
.537
.506
.537
.506
.537
.517
.549
.517
.549
.517
.549
.517
.549
.526
.559
.526
.559
.526
.559
.534
.568
.534
.568
.546
.580
.546
.580
.546
.580
.546
.580
.546
.580
.546
.580
.546
.580
.546
.580
.546
.580
continued on page 31
HYDRAULIC ROLLER
Rated
Camshaft Type Lobe # Duration
Cheater HR
Lift Rule
Rated Duration @
.006" Tappet Lift
RACE ONLY!
3389
3405
3288
3286
3289
3287
321
325
307
311
319
323
Duration in
Degrees
@ .050
268
272
254
258
266
270
@ .200
183
187
171
175
183
187
Lobe
Lift
.341
.341
.365
.365
.365
.365
Tappet Lift
@ TDC
106°
.143
.151
.118
.125
.141
.149
110°
.128
.136
.103
.110
.125
.133
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio Ratio
1.5
.512
.512
.548
.548
.548
.548
1.6
.546
.546
.584
.584
.584
.584
1.7
.580
.580
.621
.621
.621
.621
MUSTANG R LIFT RULE COMPETITION HYDRAULIC ROLLERS
These are very similar to the Cheater HR series but more aggressive off the seat and provide more area.
Rated
Camshaft Type Lobe # Duration
Mustang R
Lift Rule
Rated Duration @
.006" Tappet Lift
RACE ONLY!
3329
3330
3331
3332
3333
3334
3734
273
279
285
291
297
303
297
Duration in
Degrees
@ .050
224
230
236
242
248
254
248
@ .200
140
145
149
153
158
162
168
Lobe
Lift
.312
.312
.312
.312
.312
.312
.362
Tappet Lift
@ TDC
106°
.069
.079
.090
.101
.111
.121
.114
110°
.056
.065
.076
.086
.097
.107
.098
HYDRAULIC ROLLER
CHEATER HR LIFT RULE COMPETITION HYDRAULIC ROLLERS cont.
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.468
.468
.468
.468
.468
.468
.543
1.6
.499
.499
.499
.499
.499
.499
.579
1.7
.530
.530
.530
.530
.530
.530
.615
ESI ESX STOCKER HYDRAULIC ROLLERS
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
13600
12688
12689
12655
12656
12657
12658
12706
12708
12710
12712
12916
12718
12917
12918
12919
270
298
300
302
306
310
314
298
282
302
310
318
318
322
324
326
@ .050
219
247
249
251
255
259
263
247
231
251
259
267
267
271
273
275
@ .200
142
161
163
164
168
172
175
161
148
172
181
188
188
191
193
195
.342
.306
.306
.306
.306
.306
.306
.314
.323
.363
.378
.354
.367
.354
.354
.354
106°
.060
.110
.114
.177
.125
.132
.139
.110
.801
.120
.137
.153
.153
.158
.164
.168
110°
.048
.095
.099
.102
.110
.117
.124
.095
.664
.104
.120
.137
.137
.142
.148
.152
1.6
.547
.490
.490
.490
.490
.490
.490
.502
.517
.581
.605
.566
.587
.566
.566
.566
1.7
.581
.520
.520
.520
.520
.520
.520
.534
.549
.617
.643
.602
.624
.602
.602
.602
1.8
.616
.551
.551
.551
.551
.551
.551
.565
.581
.653
.680
.637
.661
.637
.637
.637
12711
ESX
Rated Duration @ 12719
.006" Tappet Lift 12713
312
328
324
253
269
265
169
185
183
.343
.345
.370
.119
.150
.143
.104
.135
.127
.549
.552
.592
.583
.587
.629
.617
.621
.666
ESI
Rated Duration @
.006" Tappet Lift
W W W . C O M P C A M S . C O M
31
HYDRAULIC ROLLER
HYDRAULIC ROLLER
DSI STOCKER HYDRAULIC ROLLERS
Rated
Camshaft Type Lobe # Duration
DSI
Rated Duration @
.006" Tappet Lift
12662
12914
12915
12922
279
315
319
319
Duration in
Degrees
@ .050
229
265
269
269
@ .200
149
187
191
191
Lobe
Lift
.323
.372
.372
.367
Tappet Lift
@ TDC
106°
.078
.150
.158
.158
110°
.063
.134
.142
.142
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.485
.595
.595
.587
1.6
.517
.632
.632
.624
1.7
.549
.670
.670
.661
CE STOCKER HYDRAULIC ROLLERS
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.6
CEI
Rated Duration @
271
219
141
.342
.060
.048
.547
.006" Tappet Lift 13602
1.7
1.8
.581
.616
CZK HYDRAULIC ROLLERS
The CZK is a stocker version of the CSZ.
Rated
Camshaft Type Lobe # Duration
CZK
Rated Duration @
.020" Tappet Lift
13070
13071
13072
12537
262
264
266
280
Duration in
Degrees
@ .050
213
215
217
228
@ .200
134
136
138
147
Lobe
Lift
.316
.316
.316
.323
Tappet Lift
@ TDC
106°
.051
.054
.057
.075
110°
.040
.042
.045
.061
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.474
.474
.474
.485
1.6
.506
.506
.506
.517
1.7
.537
.537
.537
.549
FSHR STOCKER HYDRAULIC ROLLERS
Very quick hydraulic roller stocker.
Rated
Camshaft Type Lobe # Duration
FSH
Rated Duration @
.006" Tappet Lift
FSX
Rated Duration @
.006" Tappet Lift
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
3576
3578
3579
3580
301
305
307
309
@ .050
256
260
262
264
@ .200
170
174
176
178
.292
.292
.292
.292
106°
.129
.137
.140
.144
110°
.114
.122
.126
.129
1.5
.438
.438
.438
.438
1.6
.467
.467
.467
.467
1.7
.496
.496
.496
.496
3561
298
252
166
.292
.123
.108
.438
.467
.496
continued on page 33
32
1 • 8 0 0 • 9 9 9 • 0 8 5 3
HYDRAULIC ROLLER
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
3582
279
235
164
.378
.095
.079
.567
.605
.643
3584
283
239
168
.378
.105
.087
.567
.605
.643
3585
285
241
170
.378
.109
.092
.567
.605
.643
3586
287
243
172
.378
.113
.096
.567
.605
.643
3588
291
247
176
.378
.122
.104
.567
.605
.643
FHL
Rated Duration @
.006" Tappet Lift
Q Size
XTREME ENERGY™ HARLEY HYDRAULIC ROLLERS
Designed to maximize torque, acceleration and throttle response for V-twins while providing excellent high RPM horsepower. A
faster valve opening increases engine vacuum and enhances throttle response, providing improved roll on power. Special closing
ramps close the valve sooner, providing more cylinder pressure and torque without resulting in excessive valve train noise. The
faster Xtreme Energy™ ramps achieve maximum velocity sooner, increasing the area under the lift curve and providing maximum
airflow and horsepower. Camshaft Type Lobe #
Xtreme Energy™
Harley
Rated Duration @
.053" Tappet Lift
3822
3809
3810
3823
3832
3824
3833
3825
3834
3826
3816
3835
3827
3817
3818
3819
Duration in
Degrees
@ .053
228
230
236
236
244
244
252
252
260
260
264
268
268
268
272
276
@ .200
148
147
153
155
160
162
167
169
174
176
180
181
183
183
187
191
.360
.346
.350
.360
.350
.360
.350
.360
.350
.360
.370
.350
.360
.370
.370
.370
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
Tappet Lift
@ TDC
Lobe
Lift
98°
.103
.106
.117
.118
.134
.134
.149
.149
.161
.163
.170
.174
.176
.177
.184
.191
102°
.089
.091
.102
.103
.118
.118
.132
.132
.146
.147
.156
.160
.162
.162
.170
.176
HYDRAULIC ROLLER
FSHR STOCKER HYDRAULIC ROLLERS cont.
106°
.076
.079
.088
.089
.103
.103
.118
.118
.131
.133
.140
.146
.147
.147
.155
.162
1.625
.585
.562
.569
.585
.569
.585
.569
.585
.569
.585
.601
.569
.585
.601
.601
.601
1.65
.594
.571
.578
.594
.578
.594
.578
.594
.578
.594
.611
.578
.594
.611
.611
.611
SOLID FLAT TAPPET
HIGH ENERGY™ & MAGNUM SOLIDS The High Energy™ Solid is the mechanical version of the High Energy™ Hydraulic. Because these designs incorporate a mechanical (solid) lifter, the valve actuation is quicker than the High Energy™ Hydraulics, thus producing slightly more power
than its hydraulic counterpart. The Magnum Solid Lifter Series is designed to allow the valve lash to be varied from .015"
to .030". This tuning tool can be used to fine tune any high performance application to a razor sharp edge.
Rated
Camshaft Type Lobe # Duration
High Energy™
Rated Duration @
.015" Tappet Lift
.842" Min. Dia.
5190
6114
6038
240-3
244-3
264-1
Duration in
Degrees
@ .050
190
200
220
@ .200
104
108
130
Lobe
Lift
.2660
.2660
.2933
Tappet Lift
@ TDC
106°
.031
.031
.062
110°
.023
.023
.050
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.399
.399
.440
W W W . C O M P C A M S . C O M
1.6
1.7
.426
.452
.426
.452
.469
.499
continued on page 34
33
SOLID FLAT TAPPET
SOLID FLAT TAPPET
HIGH ENERGY™ & MAGNUM SOLIDS cont. Rated
Camshaft Type Lobe # Duration
Magnum
Rated Duration @
.015" Tappet Lift
.842" Min. Dia.
6017
6002
6007
6003
270-3
282-2
294-3
306-5
Duration in
Degrees
@ .050
224
236
248
260
@ .200
135
145
154
164
Lobe
Lift
.3120
.3300
.3500
.3700
Tappet Lift
@ TDC
106°
.064
.082
.096
.119
110°
.054
.069
.084
.100
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.468
.495
.525
.555
1.6
.499
.528
.560
.592
1.7
.530
.561
.595
.629
NOSTALGIA PLUS™ SOLIDS
Like the Nostalgia Plus™ Hydraulics, these lobes are designed to mimic the sound of the great engines of the past while
improving performance by applying today’s design techniques. The solid lifter design allows more precise valve control and
allows further tuning through lash adjustment. When lashed at .015" these designs provide that distinct metallic, mechanical sound made famous by the most powerful of the great factory muscle cars.
Rated
Camshaft Type Lobe # Duration
Nostalgia Plus™
Rated Duration @
.015" Tappet Lift
.842" Min. Dia.
6068
6069
6070
6071
276
283
284
291
Duration in
Degrees
@ .050
239
246
247
254
@ .200
149
155
158
164
Lobe
Lift
.320
.317
.336
.332
Tappet Lift
@ TDC
106°
.094
.104
.108
.118
110°
.080
.090
.094
.104
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.480
.476
.504
.498
1.6
.512
.507
.538
.531
1.7
.544
.539
.571
.564
XTREME ENERGY™ SOLIDS
The Xtreme Energy™ Solids are designed with similar characteristics to the Xtreme Energy™ Hydraulics to maximize torque,
acceleration and throttle response while providing even more high RPM horsepower by taking advantage of the increased
stability of a solid design. The Xtreme Energy™ Solids have ramps that provide shorter seat timing than all but the most
aggressive race solids but feature a special closing section to eliminate excessive noise.
Rated
Camshaft Type Lobe # Duration
Xtreme Energy™
Rated Duration @
.015" Tappet Lift
.842" Min. Dia.
34
6052
6083
6053
6084
6054
6055
6056
6057
6089
6059
6091
6061
256
262
262
268
268
274
280
282
290
290
298
298
Duration in
Degrees
@ .050
218
224
224
230
230
236
242
244
252
252
260
260
@ .200
129
135
135
140
141
147
153
156
164
164
171
172
Lobe
Lift
.311
.313
.319
.313
.326
.335
.341
.347
.352
.361
.352
.373
Tappet Lift
@ TDC
106°
.057
.067
.067
.077
.077
.087
.097
.101
.115
.115
.129
.129
110°
.046
.054
.054
.064
.064
.073
.083
.087
.101
.101
.155
.155
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.467
.470
.479
.470
.489
.503
.512
.521
.528
.542
.528
.560
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.6
.498
.501
.510
.501
.522
.536
.546
.555
.563
.578
.563
.597
1.7
.529
.532
.542
.532
.554
.570
.580
.590
.598
.614
.598
.634
SOLID FLAT TAPPET
The High Torque Solid is designed to be used on .842" or larger tappet diameters.Tappet acceleration rates are high to
produce maximum torque vs. horsepower in an all out racing engine. Works well as exhaust when coupled with TL or XTQ
intake designs.
Rated
Camshaft Type Lobe # Duration
High Torque
Rated Duration @
.020" Tappet Lift
.842" Min. Dia.
.018" Lash
6015
6001
6014
6016
6009
6018
6000
6010
6004
6011
6005
270-1
280-1
285-1
290-1
295-1
300-1
305-1
310-1
310-2
320-1
320-2
Duration in
Degrees
@ .050
235
242
250
255
260
265
270
275
270
283
280
@ .200
144
152
156
160
164
169
175
177
175
184
182
Lobe
Lift
.330
.338
.355
.360
.370
.375
.385
.390
.375
.392
.375
Tappet Lift
@ TDC
106°
.082
.094
.104
.111
.119
.126
.136
.142
.143
.163
.156
110°
.068
.080
.092
.098
.100
.113
.123
.129
.129
.149
.142
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.495
.507
.533
.540
.555
.563
.578
.585
.563
.588
.563
1.6
.528
.541
.568
.576
.592
.600
.616
.624
.600
.627
.600
1.7
.561
.575
.604
.612
.629
.638
.655
.663
.638
.666
.638
SOLID FLAT TAPPET
HIGH TORQUE SOLIDS
HIGH RPM SOLIDS
These designs are to be used primarily on motors with 1.7 or greater rocker ratios. Design rates have been carefully chosen to allow these designs to run higher engine speeds than their high torque counterparts.
Rated
Camshaft Type Lobe # Duration
High RPM
Rated Duration @
.020" Tappet Lift
.842" Min. Dia.
.018" Lash
6019
6012
6013
6006
6027
6028
6029
284-1
294-1
304-1
314-1
324-1
328-3
334-2
Duration in
Degrees
@ .050
246
256
266
276
286
290
296
@ .200
152
162
172
182
191
184
200
Lobe
Lift
.326
.341
.356
.371
.386
.400
.400
Tappet Lift
@ TDC
106°
.097
.114
.131
.148
.165
.168
.182
110°
.083
.100
.117
.134
.151
.154
.168
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.489
.512
.534
.557
.579
.600
.600
1.6
.522
.546
.570
.594
.618
.640
.640
1.7
.554
.580
.605
.631
.656
.680
.680
HI-TECH™ SOLIDS
These designs represent an excellent mix of horsepower, torque, RPM and durability. They work with .842" or larger diameter tappets, producing very good results. These have been used successfully in everything from Sprint Cup and endurance applications to
drag racing and hobby stocks.
Rated
Camshaft Type Lobe # Duration
Hi-Tech™
Rated Duration @
.020" Tappet Lift
.842" Min. Dia.
.018" Lash
6030
6031
6032
6033
6034
6035
6036
300-4
304-4
308-4
312-4
316-4
320-4
324-4
Duration in
Degrees
@ .050
262
266
270
274
278
282
286
@ .200
166
170
174
177
181
186
192
Lobe
Lift
.365
.370
.375
.380
.385
.390
.400
Tappet Lift
@ TDC
106°
.121
.128
.134
.140
.147
.154
.163
110°
.108
.114
.120
.127
.133
.140
.149
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.548
.555
.563
.570
.578
.585
.600
W W W . C O M P C A M S . C O M
1.6
.584
.592
.600
.608
.616
.624
.640
1.7
.621
.629
.638
.646
.655
.663
.680
35
SOLID FLAT TAPPET
SOLID FLAT TAPPET
TIGHT LASH SOLIDS
The designs for the Tight Lash Solid .842" Diameter Lifters feature shorter seat timing and more area than other similar
designs. Good in restricted or open rules circle track racing. The larger designs perform very well in drag racing.
Rated
Camshaft Type Lobe # Duration
Tight Lash
Rated Duration @
.020" Tappet Lift
.842" Min. Dia.
.018" Lash
6312
6313
6314
6301
6302
6303
6304
6305
6306
6307
6308
6310
TL264
TL268
TL272
TL276
TL280
TL284
TL288
TL292
TL296
TL300
TL304
TL312
Duration in
Degrees
@ .050
234
238
242
246
250
254
259
262
266
270
274
282
@ .200
143
147
151
154
158
162
166
169
173
177
181
191
Lobe
Lift
.3300
.3350
.3400
.3476
.3534
.3600
.3667
.3734
.3800
.3867
.3934
.4067
Tappet Lift
@ TDC
106°
.083
.089
.096
.102
.109
.114
.121
.127
.133
.139
.143
.162
110°
.070
.077
.083
.089
.095
.101
.108
.113
.119
.125
.130
.148
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.495
.503
.510
.521
.530
.540
.550
.560
.570
.580
.590
.610
1.6
.528
.536
.544
.556
.565
.576
.587
.597
.608
.619
.629
.651
1.7
.561
.570
.578
.591
.601
.612
.623
.635
.646
.657
.669
.691
HIGH RPM II SOLIDS
High RPM Series II Solids are more aggressive than the original High RPM and Hi-Tech™ Solid profiles. They are designed
for use in applications that need the area of an XTQ style lobe, but are required to operate at higher engine speeds than
that fast of a ramp will allow. HTL Lifters are highly recommended with these profiles. NOTE: Cams using these lobes
should have provisions for increased oiling. Please consult with our tech representative.
Rated
Camshaft Type Lobe # Duration
High RPM II
Rated Duration @
.020" Tappet Lift
.842" Min. Dia.
.018" Lash
6330
6331
6332
6333
6334
6335
6336
287
291
295
299
303
307
311
Duration in
Degrees
@ .050
256
260
264
268
272
276
280
@ .200
167
171
175
179
183
187
191
Lobe
Lift
.367
.371
.376
.380
.384
.389
.393
Tappet Lift
@ TDC
106°
.121
.128
.135
.142
.149
.156
.163
110°
.107
.114
.121
.128
.135
.142
.149
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.551
.557
.564
.570
.576
.584
.590
1.6
.587
.594
.602
.608
.614
.622
.629
1.7
.624
.631
.639
.646
.653
.661
.668
XTQ SOLIDS
The XTQ Solid design sets the new standard for aggressive .842" lifter designs. With seat timing as low as our original tight
lash series and more area than our famous "XX" .875" series, these designs give their racers a clear edge over the competition. Smaller designs are intended for restricted applications; larger designs can be used in open applications with an
optimized valve spring selection and lighter valve
Rated
Camshaft Type Lobe # Duration
XTQ
Rated Duration @
.020" Tappet Lift
.842" Min. Dia.
.018" Lash
36
6275
6276
6277
248XTQ
254XTQ
260XTQ
Duration in
Degrees
@ .050
218
224
230
@ .200
129
135
141
Lobe
Lift
.310
.318
.325
Tappet Lift
@ TDC
106°
.057
.067
.077
110°
.046
.054
.064
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.465
.477
.488
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.6
1.7
.496
.527
.509
.541
.520
.553
continued on page 37
SOLID FLAT TAPPET
Rated
Camshaft Type Lobe # Duration
XTQ
Rated Duration @
.020" Tappet Lift
.842" Min. Dia.
.018" Lash
6258
16258
6259
16259
6260
16260
6261
16261
6262
16262
6263
16263
6264
16264
6265
16265
6266
16266
6267
16267
6268
16268
6269
6270
266XTQ
268XTQ
270XTQ
272XTQ
274XTQ
276XTQ
278XTQ
280XTQ
282XTQ
284XTQ
286XTQ
288XTQ
290XTQ
292XTQ
294XTQ
296XTQ
298XTQ
300XTQ
302XTQ
304XTQ
306XTQ
308XTQ
310XTQ
314XTQ
Duration in
Degrees
@ .050
236
238
240
242
244
246
248
250
252
254
256
258
260
262
264
266
268
270
272
274
276
278
280
284
@ .200
147
150
152
154
156
158
160
162
164
166
168
170
172
174
176
178
180
182
184
186
188
190
192
196
Lobe
Lift
.334
.337
.340
.343
.346
.350
.354
.357
.360
.363
.366
.369
.372
.375
.378
.382
.386
.389
.392
.395
.398
.401
.404
.410
Tappet Lift
@ TDC
106°
.087
.090
.094
.097
.101
.104
.108
.111
.115
.118
.122
.125
.129
.132
.136
.139
.143
.146
.150
.153
.157
.160
.164
.171
110°
.073
.077
.080
.083
.087
.090
.094
.097
.101
.104
.108
.111
.115
.118
.122
.125
.129
.132
.136
.139
.143
.146
.150
.157
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.501
.506
.510
.515
.519
.525
.531
.536
.540
.545
.549
.554
.558
.563
.567
.573
.579
.584
.588
.593
.597
.602
.606
.615
1.6
.534
.539
.544
.549
.554
.560
.566
.571
.576
.581
.586
.590
.595
.600
.605
.611
.618
.622
.627
.632
.637
.642
.646
.656
1.7
.568
.573
.578
.583
.588
.595
.602
.607
.612
.617
.622
.627
.632
.638
.643
.649
.656
.661
.666
.672
.677
.682
.687
.697
SOLID FLAT TAPPET
XTQ SOLIDS cont. XTX SOLIDS
The XTX Solids are an excellent choice for exhaust profiles to be coupled with either the XTQ or MH profiles or can be use
for both intake and exhaust in high RPM applications. The closing side is similar to the High Torque profiles, but this design
incorporates a faster opening side to increase torque and provide more area. The lifts are slightly less than the High Torque
profiles to increase the nose radius and reduce wear. NOTE: Cams using these lobes should have provisions for increased
oiling. Please consult with our tech representative. Rated
Camshaft Type Lobe # Duration
XTX
Rated Duration @
.020" Tappet Lift
.842" Min. Dia.
.018" Lash
6400
6402
6404
6406
6408
6410
6412
6414
6416
6418
6420
272
276
280
284
288
292
296
300
304
308
312
Duration in
Degrees
@ .050
238
242
246
250
254
258
262
266
270
274
278
@ .200
145
149
153
157
161
165
169
173
177
181
185
Lobe
Lift
.335
.341
.347
.351
.355
.359
.363
.367
.371
.375
.379
Tappet Lift
@ TDC
106°
.086
.092
.099
.105
.112
.118
.125
.132
.139
.146
.153
110°
.074
.080
.086
.092
.098
.105
.111
.118
.125
.132
.139
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.503
.512
.521
.527
.533
.539
.545
.551
.557
.563
.569
W W W . C O M P C A M S . C O M
1.6
.536
.546
.555
.562
.568
.574
.581
.587
.594
.600
.606
1.7
.570
.580
.590
.597
.604
.610
.617
.624
.631
.638
.644
37
SOLID FLAT TAPPET
SOLID FLAT TAPPET
JF .330" LIFT SOLIDS
The JF .330" Lift Solids are designed for use in lift rule classes that require higher RPM or lighter springs than needed
with the Max Area Lift Rule Series. The JF designs are also good for use with very high rockers in more open applications.
Can also be run in hydraulic lifter applications.
Rated
Camshaft Type Lobe # Duration
JF .330" Lift
Rated Duration @
.020" Tappet Lift
.842" Min. Dia.
6158
6159
6160
6170
6161
6162
6172
6163
6173
6164
6157
6165
6166
6167
6168
6169
269
271
273
275
277
281
283
285
287
289
291
293
295
297
299
301
Duration in
Degrees
@ .050
240
242
244
246
248
252
254
256
258
260
262
264
266
268
270
272
@ .200
149
151
153
155
157
161
163
164
166
167
168
170
172
174
176
178
Lobe
Lift
.327
.329
.330
.330
.330
.330
.330
.330
.330
.330
.330
.330
.330
.330
.330
.330
Tappet Lift
@ TDC
106°
.100
.100
.100
.100
.107
.114
.118
.121
.123
.126
.129
.132
.136
.139
.143
.146
110°
.087
.087
.087
.087
.094
.100
.104
.107
.110
.113
.116
.119
.122
.126
.129
.133
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.491
.494
.495
.495
.495
.495
.495
.495
.495
.495
.495
.495
.495
.495
.495
.495
1.6
.523
.526
.528
.528
.528
.528
.528
.528
.528
.528
.528
.528
.528
.528
.528
.528
1.7
.556
.559
.561
.561
.561
.561
.561
.561
.561
.561
.561
.561
.561
.561
.561
.561
HF & JF LIFT RULE SOLIDS
Based on the JF series except expressly for Lift Rule classes.
Rated
Camshaft Type Lobe # Duration
HF .285" Lift
Rated Duration @
.020" Tappet Lift
.842" Min. Dia.
Duration in
Degrees
@ .050
@ .200
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
106°
110°
1.5
1.6
1.7
16230
282
252
148
.285
.110
.097
.428
.456
.485
16231
286
256
151
.285
.116
.103
.428
.456
.485
16234
JF .308" Lift
16235
Rated Duration @
16236
.020" Tappet Lift
16226
.842" Min. Dia.
16237
279
281
283
285
287
250
252
254
256
258
155
157
158
160
162
.308
.308
.308
.308
.308
.110
.113
.116
.119
.123
.095
.100
.103
.106
.109
.462
.462
.462
.462
.462
.493
.493
.493
.493
.493
.524
.524
.524
.524
.524
JF .301" Lift
Rated Duration @
.020" Tappet Lift
.842" Min. Dia.
16246
295
266
167
.301
.135
.122
.452
.482
.512
16248
299
270
171
.301
.141
.128
.452
.482
.512
38
1 • 8 0 0 • 9 9 9 • 0 8 5 3
SOLID FLAT TAPPET
The Max Area Series is designed for 2bbl and stock intake applications which are airflow limited. This series of lobes utilizes
low seat timing with maximum area under the curve. These lobes perform best with a 1.7 or 1.8 rocker ratio and can be
used with an .842" lifter. NOTE: Cams using these lobes should have provisions for increased oiling. Please consult with our
tech representative.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.5
6208
MA251-1
225
135
.319
.064
.053
.479
6209
MA255-1
229
139
.326
.072
.059
.489
6210
MA259-1
232
143
.330
.076
.064
.495
6211
MA263-1
236
147
.331
.090
.077
.497
Max Area
6212
MA267-1
240
151
.333
.097
.083
.500
Rated Duration @
6213
MA271-1
244
155
.340
.104
.091
.510
.020" Tappet Lift
6214
MA275-1
248
159
.340
.109
.096
.510
.842" Min. Dia.
6215
MA279-1
252
161
.340
.116
.103
.510
6216
MA283-1
256
164
.340
.123
.109
.510
6217
MA287-1
260
168
.340
.129
.116
.510
6218
MA291-1
264
171
.340
.136
.123
.510
6219
MA295-1
268
176
.345
.143
.129
.518
6222
MA299-1
272
179
.345
.149
.136
.518
1.6
.510
.522
.528
.530
.533
.544
.544
.544
.544
.544
.544
.552
.552
1.7
.542
.554
.561
.563
.566
.578
.578
.578
.578
.578
.578
.587
.587
SOLID FLAT TAPPET
MAX AREA (MA) SOLIDS
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W W W . C O M P C A M S . C O M
39
SOLID FLAT TAPPET
SOLID FLAT TAPPET
MAX AREA (MA) LIFT RULE SOLIDS
The Max Area Lift Rule lobes can be run with solid lifters or Pro Magnum™-style hydraulic lifters. They are more aggressive
off the seat than the parent Max Area Series for tighter lash and less rocker. They work well in lift rule oval track, road race
and high RPM NHRA Stock Eliminator classes. Will check 21° larger at .006" than .020". Specifically designed to optimize
dynamic valve motion and produce maximum power, these lobes use the experience gained from racing the MA profile
and the techniques we learn from our Spintron testing to provide the best performance in all lift rule applications. Grouped
in lobe lift increments for convenient selection. NOTE: Cams using these lobes should have provisions for increased oiling.
Please consult with our tech representative.
Rated
Camshaft Type Lobe # Duration
Max Area Low Lift
Rated Duration @
.020" Tappet Lift
.842" Min. Dia.
.010"-.020" Lash
40
5695
5696
5704
5718
5720
5719
5708
5645
5744
5746
5550
5553
5643
5644
5649
5646
5650
5651
5652
5653
5647
5654
5655
5657
5692
5694
5697
5698
5667
5668
5669
5670
5656
5658
5659
5666
5663
5664
273
277
283
275
279
283
293
257
261
265
267
274
281
265
273
275
277
281
285
289
291
293
297
301
283
291
303
297
257
265
269
273
276
283
286
290
295
301
Duration in
Degrees
@ .050
246
250
256
248
252
256
266
230
234
238
240
248
254
238
246
248
250
254
258
262
264
266
270
274
256
264
276
270
230
238
242
246
250
256
260
264
268
274
@ .200
124
127
142
140
144
148
159
124
129
133
134
142
148
134
143
145
146
150
154
159
161
163
167
170
156
165
176
171
135
142
145
148
152
156
161
165
171
172
Lobe
Lift
.237
.237
.242
.252
.252
.252
.255
.260
.260
.260
.260
.260
.260
.266
.266
.266
.266
.266
.266
.266
.266
.266
.266
.266
.273
.273
.275
.278
.283
.283
.283
.283
.283
.283
.283
.283
.283
.283
Tappet Lift
@ TDC
106°
.100
.106
.117
.103
.109
.115
.131
.076
.083
.089
.093
.107
.115
.089
.103
.106
.109
.115
.122
.129
.132
.135
.141
.147
.121
.134
.152
.144
.078
.091
.098
.104
.110
.121
.127
.136
.144
.149
110°
.088
.094
.105
.090
.096
.103
.119
.063
.070
.076
.080
.093
.102
.076
.090
.093
.096
.102
.110
.116
.120
.123
.129
.135
.108
.121
.140
.131
.064
.077
.084
.090
.097
.107
.113
.123
.131
.136
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio Ratio
1.5
.356
.356
.363
.378
.378
.378
.383
.390
.390
.390
.390
.390
.390
.399
.399
.399
.399
.399
.399
.399
.399
.399
.399
.399
.410
.410
.413
.417
.425
.425
.425
.425
.425
.425
.425
.425
.425
.425
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.6
1.7
.379
.403
.379
.403
.387
.411
.403
.428
.403
.428
.403
.428
.408
.434
.416
.442
.416
.442
.416
.442
.416
.442
.416
.442
.416
.442
.426
.452
.426
.452
.426
.452
.426
.452
.426
.452
.426
.452
.426
.452
.426
.452
.426
.452
.426
.452
.426
.452
.437
.464
.437
.464
.440
.468
.445
.473
.453
.481
.453
.481
.453
.481
.453
.481
.453
.481
.453
.481
.453
.481
.453
.481
.453
.481
.453
.481
continued on page 41
SOLID FLAT TAPPET
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio Ratio
@ .050
@ .200
106°
110°
1.5
5665
303
276
174
.283
.151
.139
.425
5661
287
260
166
.288
.130
.116
.432
5662
291
264
169
.288
.136
.122
.432
5678
279
252
152
.290
.113
.100
.435
5680
286
259
158
.294
.121
.108
.441
5679
294
267
167
.296
.134
.121
.444
5676
263
236
143
.300
.088
.074
.450
5677
267
240
147
.300
.095
.081
.450
5681
271
244
151
.300
.102
.088
.450
5682
275
248
155
.300
.109
.095
.450
5683
279
252
158
.300
.116
.102
.450
5684
283
256
162
.300
.123
.109
.450
5685
287
260
166
.300
.130
.116
.450
5686
291
264
170
.300
.136
.123
.450
6174
274
248
158
.304
.109
.095
.456
5713
280
254
158
.306
.116
.103
.459
5714
282
256
160
.306
.119
.106
.459
5715
284
258
162
.306
.123
.109
.459
6192
266
240
150
.312
.095
.081
.468
6193
270
244
154
.312
.102
.088
.468
274
248
158
.312
.109
.095
.468
Max Area Low Lift 6194
6195
278
252
162
.312
.116
.102
.468
Rated Duration @
282
256
166
.312
.123
.109
.468
.020" Tappet Lift 6196
.842" Min. Dia.
6197
286
260
170
.312
.130
.116
.468
.010"-.020" Lash 6198
290
264
174
.312
.137
.123
.468
6199
294
268
178
.312
.144
.130
.468
6200
298
272
182
.312
.151
.137
.468
6231
262
236
148
.322
.088
.075
.483
6232
266
240
152
.322
.095
.081
.483
6234
274
248
160
.322
.109
.095
.483
6235
278
252
164
.322
.116
.102
.483
6237
286
260
172
.322
.131
.116
.483
6238
290
264
176
.322
.138
.124
.483
6239
294
268
180
.324
.145
.131
.486
6246
296
270
182
.320
.148
.134
.480
6240
300
274
186
.324
.155
.141
.486
6249
304
278
190
.324
.162
.148
.486
6241
262
236
149
.330
.088
.075
.495
6242
266
240
152
.330
.095
.081
.495
6243
270
244
156
.330
.102
.088
.495
6244
274
248
160
.330
.109
.095
.495
6245
278
252
164
.330
.116
.102
.495
6247
282
256
167
.330
.124
.109
.495
6229
286
260
170
.330
.132
.116
.495
6224
294
268
180
.330
.145
.131
.495
6226
298
272
184
.330
.152
.138
.495
6225
302
276
188
.330
.159
.145
.495
W W W . C O M P C A M S . C O M
1.6
.453
.461
.461
.464
.470
.474
.480
.480
.480
.480
.480
.480
.480
.480
.486
.490
.490
.490
.499
.499
.499
.499
.499
.499
.499
.499
.499
.515
.515
.515
.515
.515
.515
.518
.512
.518
.518
.528
.528
.528
.528
.528
.528
.528
.528
.528
.528
1.7
.481
.490
.490
.493
.500
.503
.510
.510
.510
.510
.510
.510
.510
.510
.517
.520
.520
.520
.530
.530
.530
.530
.530
.530
.530
.530
.530
.547
.547
.547
.547
.547
.547
.551
.544
.551
.551
.561
.561
.561
.561
.561
.561
.561
.561
.561
.561
SOLID FLAT TAPPET
MAX AREA LIFT RULE SOLIDS cont.
41
SOLID FLAT TAPPET
SOLID FLAT TAPPET
USI USX UPI UPX STOCKER FLAT SOLIDS
These are designs for high RPM stocker applications. Rated
Camshaft Type Lobe # Duration
USI
Rated Duration @
.020" Tappet Lift
USX
Rated Duration @
.020" Tappet Lift
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
5854
5840
5538
5540
294
298
294
298
@ .050
263
266
262
266
@ .200
157
157
166
170
.267
.267
.345
.345
106°
.124
.125
.123
.130
110°
.111
.113
.110
.116
1.6
.401
.401
.552
.552
1.7
.427
.427
.587
.587
1.8
.454
.454
.621
.621
5862
5846
5544
5546
300
305
301
305
269
272
268
272
164
166
174
178
.277
.277
.365
.365
.135
.136
.134
.141
.122
.124
.121
.128
.416
.416
.584
.584
.443
.443
.621
.621
.471
.471
.657
.657
MH SOLIDS
MH Solids are the most aggressive .842" solid lifter profiles available. These are best in restricted applications where maximum
torque and power are required and valve train rules are open except for requiring .842" flat tappets. The COMP Cams® #26094
valve spring, 3/8" minimum pushrod diameters, Hi-Tech™ late oiling tappets and shaft mounted rockers are all highly recommended. Please consult with a COMP Cams® CAM HELP® technician or one of our Engine Builder Sales personnel before using
these profiles to reduce the risk from improper component selection. NOTE: Cams using these lobes should have provisions for
increased oiling. Please consult with our tech representative.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
6252
262
236
149
.345
.088
.075
6286
264
238
151
.348
.092
.078
6253
266
240
153
.350
.095
.081
6289
268
242
155
.354
.099
.085
6282
270
244
157
.357
.102
.088
MH
272
246
159
.360
.106
.092
Rated Duration @ 6251
6281
274
248
161
.362
.109
.095
.020" Tappet Lift
.842" Min. Dia.
6250
276
250
163
.365
.113
.099
.018" Lash
6280
278
252
165
.367
.116
.102
6254
280
254
167
.368
.120
.106
6283
282
256
169
.370
.124
.109
6284
284
258
171
.372
.127
.113
6255
286
260
173
.375
.131
.116
6285
288
262
175
.377
.134
.120
6256
290
264
177
.380
.138
.124
42
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.518
.522
.525
.531
.536
.540
.543
.548
.551
.552
.555
.558
.563
.566
.570
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.6
.552
.557
.560
.566
.571
.576
.579
.584
.587
.589
.592
.595
.600
.603
.608
1.7
.587
.592
.595
.602
.607
.612
.615
.621
.624
.626
.629
.632
.638
.641
.646
SOLID FLAT TAPPET
The GRI Series .842" solid lifter profiles are designed using the latest techniques to fill in the gap between the XTQ and MH
families while providing better dynamics than with either other design. These should be used only on nitrided camshafts.
Also, the mating lifters should be inspected and sorted by the chamfer with only small chamfer lifters used on these designs. Please consult with a COMP Cams® CAM HELP® technician or one of our Engine Builder Sales personnel before
using these profiles to reduce the risk from improper component selection. NOTE: Cams using these lobes should have
provisions for increased oiling. Please consult with our tech representative.
Rated
Camshaft Type Lobe # Duration
16200
16202
16203
16204
16206
GRI
16208
Rated Duration @
.020" Tappet Lift 16210
16212
16214
16216
16218
16220
16222
16188
265
269
271
273
277
281
285
289
293
297
301
305
309
281
Duration in
Degrees
@ .050
238
242
244
246
250
254
258
262
266
270
274
278
282
254
@ .200
150
154
156
158
162
166
170
174
178
182
186
190
194
166
Lobe
Lift
.346
.353
.357
.360
.367
.373
.379
.385
.391
.397
.403
.409
.415
.360
Tappet Lift
@ TDC
106°
.091
.098
.102
.105
.112
.119
.126
.133
.140
.147
.154
.161
.168
.119
110°
.078
.084
.088
.091
.098
.105
.112
.119
.126
.133
.140
.147
.154
.105
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.519
.530
.535
.540
.551
.560
.569
.578
.587
.596
.605
.614
.623
.540
1.6
.554
.565
.570
.576
.587
.597
.606
.616
.626
.635
.645
.654
.664
.576
1.7
.588
.600
.606
.612
.624
.634
.644
.655
.665
.675
.685
.695
.706
.612
SOLID FLAT TAPPET
GRI SOLIDS
MEM SOLIDS
The MEM Series .842" solid lifter profiles were designed for the first Engine Masters competition. May work on minimum
chamfer .842" lifters for a short period of time but would be much safer on .875" tappets. 1.948" minimum journal diameter. Nitriding and increased oiling are highly recommended.
Rated
Camshaft Type Lobe # Duration
MEM
Rated Duration @
.020" Tappet Lift
6780
6782
6784
6786
6788
262
266
270
274
278
Duration in
Degrees
@ .050
237
241
245
249
253
PRO PLASMA™ NITRIDING
@ .200
152
156
160
164
168
Lobe
Lift
.363
.369
.375
.381
.387
Tappet Lift
@ TDC
106°
.092
.099
.106
.113
.120
110°
.078
.085
.092
.099
.106
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.545
.554
.563
.572
.581
1.6
.581
.590
.600
.610
.619
1.7
.617
.627
.638
.648
.658
Available for any COMP Cams® flat tappet camshaft, Pro Plasma™ Nitriding is a patented process that infuses nitrogen ions
into steel to deliver unmatched wear resistance. COMP® offers
some popular part numbered applications already nitrided and
ready to ship. However, if we don’t offer a nitrided part number
for your application, we can nitride any flat tappet cam that we
offer, including custom grinds.
1.800.999.0853 • compcams.com
W W W . C O M P C A M S . C O M
43
SOLID FLAT TAPPET
SOLID FLAT TAPPET
MHF SOLIDS
MHF Solids are similar to the MH Series but have even more velocity and more area to take complete advantage of the
larger .875" Ford lifter. Please consult with a COMP Cams® CAM HELP® technician or one of our Engine Builder Sales
personnel before using these profiles to reduce the risk from improper component selection. NOTE: Cams using these
lobes should have provisions for increased oiling. Please consult with our tech representative.
Rated
Camshaft Type Lobe # Duration
MHF
Rated Duration @
.020" Tappet Lift
.875" Min. Dia.
.018" Lash
7393
7394
7395
7404
7405
7406
7408
7409
7411
7412
7413
7414
7415
7416
260
262
264
266
268
270
274
278
282
286
290
294
296
298
Duration in
Degrees
@ .050
234
236
238
240
242
244
248
252
256
260
264
268
270
272
Lobe
Lift
@ .200
150
152
154
156
158
160
164
168
172
176
180
184
186
188
.355
.357
.359
.361
.362
.364
.369
.373
.380
.385
.390
.395
.397
.400
Tappet Lift
@ TDC
106°
.085
.089
.093
.096
.100
.104
.111
.118
.126
.133
.141
.148
.152
.156
110°
.071
.075
.078
.082
.085
.089
.096
.104
.111
.118
.126
.133
.137
.141
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.533
.536
.539
.542
.543
.546
.554
.560
.570
.578
.585
.593
.596
.600
1.6
.568
.571
.574
.578
.579
.582
.590
.597
.608
.616
.624
.632
.635
.640
1.7
.604
.607
.610
.614
.615
.619
.627
.634
.646
.655
.663
.672
.675
.680
FL & SQ SOLIDS
The FL Series is designed to provide excellent area under the curve with an .875" tappet. These work well in place of TLs
where .875" lifters can be used. Excellent in restricted applications with 1.65:1 to 1.75:1 rocker arms. Increased valve
spring loads are recommended for higher RPM. The SQ designs are the larger cousins of the FL series and can be used in
higher RPM applications with increased spring loads. NOTE: Cams using these lobes should have provisions for increased
oiling. Please consult with our tech representative.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
1.6
.570
.578
.586
.594
.610
1.7
.605
.614
.622
.631
.648
7250
289
260
175
.385
.132
.117
7262
291
262
177
.385
.135
.120
7260
293
264
179
.390
.138
.123
SQ .875"
295
266
181
.390
.142
.127
Rated Duration @ 7263
.020" Tappet Lift 7261
297
268
183
.400
.146
.131
.875" Min. Dia.
7265
300
270
185
.400
.150
.135
7266
302
272
187
.400
.154
.139
7267
304
274
189
.400
.158
.143
.578
.578
.585
.585
.600
.600
.600
.600
.616
.616
.624
.624
.640
.640
.640
.640
.655
.655
.663
.663
.680
.680
.680
.680
FL .875"
Rated Duration @
.020" Tappet Lift
.875" Min. Dia.
44
.356
.361
.366
.371
.381
106°
.091
.098
.106
.113
.120
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.534
.542
.549
.557
.572
FL268
FL272
FL276
FL280
FL284
@ .200
153
157
161
165
169
Tappet Lift
@ TDC
110°
.078
.084
.091
.098
.106
7130
7131
7132
7133
7134
@ .050
239
243
247
251
254
Lobe
Lift
1 • 8 0 0 • 9 9 9 • 0 8 5 3
SOLID FLAT TAPPET
Designed to turn high engine speed while maintaining control of the valve. Must use .875" diameter lifter. For use with 1.65 to 1.7+
rocker arms. Easy on valve train components. Intake designs have faster opening ramps and can be used on intake or exhaust. Exhaust designs have symmetric ramps and are smoother. NOTE: Cams using these lobes should have provisions for increased oiling.
Please consult with our tech representative.
Rated
Camshaft Type Lobe # Duration
High RPM Dash
12 Int.
Rated Duration @
.020" Tappet Lift
.875" Min. Dia.
7160
7161
7162
7163
7164
7165
7166
7168
7158
7159
292-12
296-12
300-12
302-12
304-12
306-12
308-12
312-12
314-12
318-12
Duration in
Degrees
@ .050
258
262
266
268
270
272
274
278
280
284
@ .200
168
171
176
179
180
182
183
188
190
194
7169
312-11
276
184
High RPM Dash
7170
316-12
280
188
12 Exh.
318-11
282
190
Rated Duration @ 7174
.020" Tappet Lift 7171
320-12
284
192
.875" Min. Dia.
7172
322-12
286
194
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
.375
.380
.390
.395
.395
.400
.400
.408
.410
.410
106°
.120
.128
.130
.134
.138
.142
.145
.153
.156
.164
110°
.106
.113
.116
.119
.123
.127
.130
.138
.142
.149
1.5
.563
.570
.585
.593
.593
.600
.600
.612
.615
.615
1.6
.600
.608
.624
.632
.632
.640
.640
.653
.656
.656
1.7
.638
.646
.663
.672
.672
.680
.680
.694
.697
.697
.400
.408
.410
.410
.410
.148
.155
.159
.163
.167
.134
.141
.145
.148
.152
.600
.612
.615
.615
.615
.640
.653
.656
.656
.656
.680
.694
.697
.697
.657
SOLID FLAT TAPPET
HIGH RPM DASH 12 SOLIDS
DASH 13 SOLIDS
Dash 13 Solids are very similar to both the Dash 12 and XX open designs. These provide a more modern, in-between series
that can handle more rocker ratio than either of the two earlier families. NOTE: Cams using these lobes should have provisions for increased oiling. Rated
Camshaft Type Lobe # Duration
Dash 13
Rated Duration @
.020" Tappet Lift
.875" Min. Dia.
7185
9185
7186
9186
7187
9187
7188
9188
7189
9189
7190
9190
7191
9191
7192
9192
7193
9193
7194
9194
7015
9195
7016
310-13
310
312-13
312
314-13
314
316-13
316
318-13
318
320-13
320
322-13
322
324-13
324
326-13
326
328-13
328
330-13
330
332-13
Duration in
Degrees
@ .050
276
276
278
278
280
280
282
282
284
284
286
286
288
288
290
290
292
292
294
294
296
296
298
@ .200
186
186
188
188
190
190
192
192
194
194
196
196
198
198
200
200
202
202
204
204
206
206
208
Lobe
Lift
.392
.402
.394
.404
.396
.406
.398
.408
.400
.410
.402
.412
.403
.414
.404
.416
.405
.418
.406
.420
.407
.422
.408
Tappet Lift
@ TDC
106°
.151
.151
.155
.155
.159
.159
.163
.163
.166
.166
.170
.170
.174
.174
.178
.178
.182
.182
.186
.186
.189
.189
.193
110°
.136
.136
.140
.140
.144
.144
.148
.148
.151
.151
.155
.155
.159
.159
.163
.163
.167
.167
.171
.171
.174
.174
.178
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.6
.627
.643
.630
.646
.634
.650
.637
.653
.640
.656
.643
.659
.645
.662
.646
.666
.648
.669
.650
.672
.651
.675
.653
W W W . C O M P C A M S . C O M
1.7
.666
.683
.670
.687
.673
.690
.677
.694
.680
.697
.683
.700
.685
.704
.687
.707
.689
.711
.690
.714
.692
.717
.694
1.8
.706
.724
.709
.727
.713
.731
.716
.734
.720
.738
.724
.742
.725
.745
.727
.749
.729
.752
.731
.756
.733
.760
.734
45
SOLID FLAT TAPPET
SOLID FLAT TAPPET
F3 EXHAUST SOLIDS
The F3 Exhaust Solids are like the Dash 13 high lift lobes, but they have a faster opening ramp design to help increase
torque while increasing opening area to reduce pumping losses. NOTE: Cams using these lobes should have provisions for
increased oiling. Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.6
1.7
1.8
9158
314
283
194
.410
.166
.151
.656
.697
.738
9159
316
285
196
.412
.170
.155
.659
.700
.742
9160
318
287
198
.414
.174
.159
.662
.704
.745
9161
320
289
200
.416
.178
.163
.666
.707
.749
9162
322
291
202
.418
.182
.167
.669
.711
.752
F3 Exh.
Rated Duration @
.020" Tappet Lift
.875" Min. Dia.
D3C SOLIDS
D3C Solids are like the Dash 13 designs but with slightly less velocity for coated tappets.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.6
1.7
1.8
9384
312
278
187
.390
.154
.140
.624
.663
.702
D3C
314
280
189
.392
.158
.144
.627
.666
.706
Rated Duration @ 9385
.020" Tappet Lift 9386
316
282
191
.394
.162
.147
.630
.670
.709
.875" Min. Dia.
9387
318
284
193
.396
.166
.151
.634
.673
.713
9388
320
286
195
.398
.169
.155
.637
.677
.716
9389
322
288
197
.400
.173
.158
.640
.680
.720
XX SOLIDS
The smaller Restricted Designs are very aggressive. The larger Open Designs are for continuous high RPM, providing
stability over 8500 with good related components. Both require proper spring selection and regular maintenance. Very
good horsepower curves. Proper break-in is very critical with these lobe designs. NOTE: Cams using these lobes should
have provisions for increased oiling. Please consult with our tech representative.
Rated
Camshaft Type Lobe # Duration
XX
Rated Duration @
.020" Tappet Lift
.875" Min. Dia.
Open Designs
Rated Duration @
.020" Tappet Lift
.875" Min. Dia.
46
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
7110
7113
7114
7115
7136
7116
7118
7117
278XX
280XX
282XX
284XX
286XX
288XX
294XX
298XX
@ .050
246
248
250
254
256
258
262
266
@ .200
159
160
162
166
168
170
175
180
.365
.365
.370
.366
.378
.380
.390
.400
106°
.102
.103
.106
.114
.118
.120
.129
.137
110°
.088
.090
.092
.100
.104
.107
.115
.122
1.5
.548
.548
.555
.549
.567
.570
.585
.600
7068
7069
7071
7072
7073
292XX
296XX
300XX
302XX
304XX
260
264
268
270
272
170
174
178
180
182
.390
.395
.400
.403
.406
.124
.133
.139
.141
.145
.110
.119
.122
.124
.126
.585
.593
.600
.605
.609
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.6
.584
.584
.592
.586
.605
.608
.624
.640
1.7
.621
.621
.629
.622
.643
.646
.663
.680
.624
.663
.632
.672
.640
.680
.645
.685
.650
.690
continued on page 47
SOLID FLAT TAPPET
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.5
7074
306XX
274
184
.408
.148
.131
.612
Open Designs
7075
308XX
276
186
.410
.153
.133
.615
Rated Duration @
7125
310XX
278
190
.415
.158
.139
.623
.020" Tappet Lift
7077
312XX
280
191
.415
.161
.143
.623
.875" Min. Dia.
7078
314XX
282
193
.418
.165
.150
.627
7127
316XX
284
196
.420
.169
.146
.630
7135
320XX
288
200
.420
.177
.154
.630
1.6
.653
.656
.664
.664
.669
.672
.672
1.7
.694
.697
.706
.706
.711
.714
.714
HIGH ROCKER RATIO SOLIDS
Specially designed for NASCAR Sprint Cup restrictor plate engines. Use with 2.0:1 intake rocker and 1.9:1 exhaust along
with a COMP Cams® #927 valve spring. Very smooth for 2.0:1 design and very easy on other valve train parts. NOTE: Cams
using these lobes should have provisions for increased oiling. Please consult with our tech representative.
SOLID FLAT TAPPET
XX SOLIDS cont.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
7380
261
230
141
.325
.075
.063
7381
265
234
144
.325
.081
.069
7382
270
238
146
.325
.087
.075
272
240
149
.335
.090
.078
High Rocker Ratio 7388
274
242
152
.335
.094
.081
Rated Duration @ 7383
.020" Tappet Lift 7386
276
244
153
.335
.097
.084
.875" Min. Dia.
7384
278
246
154
.335
.100
.087
7387
280
248
157
.340
.104
.090
7385
282
250
158
.340
.107
.094
7389
286
254
163
.350
.114
.100
7396
292
260
169
.355
.125
.111
7399
298
266
175
.360
.136
.121
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.9
.618
.618
.618
.637
.637
.637
.637
.646
.646
.665
.675
.684
2.0
.650
.650
.650
.670
.670
.670
.670
.680
.680
.700
.710
.720
2.1
.683
.683
.683
.704
.704
.704
.704
.714
.714
.735
.746
.756
HIGH ROCKER RATIO II SOLIDS
Specially designed for NASCAR Sprint Cup restrictor plate engines. Use with 2.0:1 intake rocker and 1.9:1 exhaust along
with a COMP Cams® #927 valve spring. More aggressive than earlier 2.0:1 design but still very easy on valve train parts. Rated
Camshaft Type Lobe # Duration
High Rocker
Ratio II
Rated Duration @
.020" Tappet Lift
.875" Min. Dia.
7353
7354
7355
7356
7357
7358
7359
7362
7363
7364
266
268
270
272
274
276
278
280
282
284
Duration in
Degrees
@ .050
236
238
240
242
244
246
248
250
252
254
@ .200
148
150
152
154
157
158
160
162
164
166
Lobe
Lift
.332
.335
.338
.342
.345
.345
.345
.345
.345
.345
Tappet Lift
@ TDC
106°
.087
.090
.093
.097
.101
.104
.108
.111
.115
.119
110°
.063
.076
.080
.083
.087
.090
.093
.097
.100
.104
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.9
.631
.637
.642
.650
.656
.656
.656
.656
.656
.656
W W W . C O M P C A M S . C O M
2.0
2.1
.664
.697
.670
.704
.676
.710
.684
.718
.690
.725
.690
.725
.690
.725
.690
.725
.690
.725
.690
.725
continued on page 48
47
SOLID FLAT TAPPET
SOLID FLAT TAPPET
HIGH ROCKER RATIO II SOLIDS cont.
Rated
Camshaft Type Lobe # Duration
High Rocker
Ratio II
Rated Duration @
.020" Tappet Lift
.875" Min. Dia.
7365
7366
7367
7368
Duration in
Degrees
@ .050
256
258
260
262
286
288
290
292
Lobe
Lift
@ .200
167
169
170
172
.345
.345
.345
.345
Tappet Lift
@ TDC
106°
.122
.126
.129
.133
110°
.108
.111
.115
.118
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.9
.656
.656
.656
.656
2.0
.690
.690
.690
.690
2.1
.725
.725
.725
.725
N SOLIDS
Our most popular NASCAR Sprint Cup designs, these provide excellent power and reliability. Very stable at high RPM
(8600+) with COMP Cams® #927 valve springs proper valve train selection. Excellent high end power with slightly less
low-end torque than XX series. Use extreme caution during break-in.
Rated
Camshaft Type Lobe # Duration
N
Rated Duration @
.020" Tappet Lift
.875" Min. Dia.
7020
7021
7022
7028
7023
7084
7085
7086
7087
7120
7121
7122
7123
7124
294N-1
298N-2
300N-1
302N-1
304N-1
306N-1
308N-1
310N-1
312N-1
304N-3E
308N-1E
310N-1E
314N-1E
318N-1E
Duration in
Degrees
@ .050
262
266
268
270
272
274
276
278
280
266
270
271
276
280
Lobe
Lift
@ .200
174
176
173
181
183
186
187
189
191
174
179
178
183
186
.401
.410
.406
.410
.412
.411
.411
.411
.411
.390
.400
.390
.400
.405
Tappet Lift
@ TDC
106°
.129
.134
.132
.143
.147
.151
.155
.158
.161
.128
.133
.137
.145
.149
110°
.115
.120
.121
.128
.132
.136
.141
.143
.147
.114
.119
.123
.131
.135
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.602
.615
.609
.615
.618
.617
.617
.617
.617
.585
.600
.585
.600
.608
1.6
.642
.656
.650
.656
.659
.658
.658
.658
.658
.624
.640
.624
.640
.648
1.7
.682
.697
.690
.697
.700
.699
.699
.699
.699
.663
.680
.663
.680
.689
OVAL+ SOLIDS
These profiles have their design based on the ever popular N-1 series but have been optimized for the higher rocker ratios,
tighter lash settings and lower compression used in today’s NASCAR Sprint Cup engines. For use with 1.7 to 1.8:1 rockers
(or more in qualifying). Requires the same care as the N-1 for break-in.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
7037
299
266
177
.399
.136
.122
7038
301
268
179
.401
.140
.125
Oval+
7039
303
270
181
.403
.143
.128
Rated Duration @
7040
305
272
183
.405
.147
.132
.020" Tappet Lift
7041
307
274
185
.407
.151
.136
.875" Min. Dia.
7042
309
276
187
.409
.154
.140
7043
311
278
189
.411
.158
.143
7044
313
280
191
.413
.162
.147
7049
315
282
193
.415
.165
.151
48
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
.678
.682
.685
.689
.692
.695
.699
.702
.706
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.75
.698
.702
.705
.709
.712
.716
.719
.723
.726
1.8
.718
.722
.725
.729
.733
.736
.740
.743
.747
SOLID FLAT TAPPET
These designs are for use in NASCAR Sprint Cup with high rocker ratios. Typically used with 1.75 to 1.80:1 ratios for race
and 1.9 to 2.0:1 ratios for qualifying. These are very comparable to the Oval Solids but should be a little better below peak
torque and above peak power if the valve train is optimized.
Rated
Camshaft Type Lobe # Duration
FE .875"
Rated Duration @
.020" Tappet Lift
.875" Min. Dia.
7665
7666
7667
7668
7669
7670
7671
299
301
303
305
307
309
311
Duration in
Degrees
@ .050
267
269
271
273
275
277
279
@ .200
178
180
182
184
186
188
190
Lobe
Lift
.398
.400
.402
.405
.408
.411
.413
Tappet Lift
@ TDC
106°
.138
.141
.145
.149
.153
.156
.159
110°
.123
.127
.130
.134
.137
.141
.145
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
.677
.680
.683
.689
.694
.699
.702
1.75
.697
.700
.704
.709
.714
.719
.723
1.8
.716
.720
.724
.729
.734
.740
.743
SOLID FLAT TAPPET
FE .875" SOLIDS
TDLC SOLIDS
The TDLC Solids are a cross between the Oval+ and FE designs but with lower velocity for use with coated tappets.
Rated
Camshaft Type Lobe # Duration
TDLC
Rated Duration @
.020" Tappet Lift
.875" Min. Dia.
9374
9375
9376
9377
297
299
301
303
Duration in
Degrees
@ .050
266
268
270
272
@ .200
176
178
180
182
Lobe
Lift
.384
.386
.388
.390
Tappet Lift
@ TDC
106°
.134
.138
.142
.145
110°
.120
.124
.127
.131
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.9
.730
.733
.737
.741
2.0
.768
.772
.776
.780
2.1
.806
.811
.815
.819
T1N − VERY HIGH RPM .875" FLAT
The T1N series is the next step in the evolution of the N-1, Oval+ and FE series. These are optimized for use on tool steel
cams and work very well with the popular DLC tappet coatings. T1N profiles have been used very successfully on both the
intake and exhaust side.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
9360
303
270
181
.394
.142
.128
9361
305
272
183
.396
.146
.131
9362
307
274
185
.398
.150
.135
T1N High RPM
9363
309
276
187
.400
.153
.139
.875" Flat
Rated Duration @ 9364
311
278
189
.402
.157
.142
.020" Tappet Lift 9365
313
280
191
.404
.161
.146
.875" Min. Dia.
9366
315
282
193
.406
.164
.150
9367
317
284
195
.408
.168
.153
9368
319
286
197
.410
.172
.157
9369
321
288
199
.412
.176
.161
9370
323
290
201
.414
.179
.164
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.8
.709
.713
.716
.720
.724
.727
.731
.734
.738
.742
.745
W W W . C O M P C A M S . C O M
1.9
.749
.752
.756
.760
.764
.768
.771
.775
.779
.783
.787
2.0
.788
.792
.796
.800
.804
.808
.812
.816
.820
.824
.828
49
SOLID FLAT TAPPET
SOLID FLAT TAPPET
TCT − HIGH RATIO .875" FLAT
Rated
Camshaft Type Lobe # Duration
TCT High Ratio
.875" Flat
Rated Duration @
.020" Tappet Lift
9771
9772
9773
298
300
302
Duration in
Degrees
@ .050
265
267
269
@ .200
173
175
177
Lobe
Lift
.372
.374
.376
Tappet Lift
@ TDC
106°
.130
.133
.137
110°
.116
.119
.123
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
2.0
.744
.748
.752
2.1
.781
.785
.790
2.2
.818
.823
.827
NRX SOLIDS
The NRX Solids are designed for use in NASCAR Spring Cup engines with 55mm or larger journals. They are designed with
higher lobe lifts than the standard journal families to allow either less ratio or higher lift. Use in applications with less than
55mm journals will result in a small nose radius and premature wear. Rated
Camshaft Type Lobe # Duration
NRX
Rated Duration @
.020" Tappet Lift
.875" Min. Dia.
7203
7204
7205
7206
7207
7208
9709
9710
9711
9712
9713
9714
299
301
303
305
307
309
311
313
315
317
319
321
Duration in
Degrees
@ .050
266
268
270
272
274
276
278
280
282
284
286
288
@ .200
179
181
183
185
187
189
191
193
195
197
199
201
Lobe
Lift
.414
.416
.418
.420
.422
.424
.426
.428
.430
.432
.434
.436
Tappet Lift
@ TDC
106°
.139
.143
.147
.151
.155
.158
.162
.166
.170
.174
.177
.181
110°
.124
.128
.132
.136
.139
.143
.147
.151
.155
.158
.162
.166
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
.704
.707
.711
.714
.717
.721
.724
.728
.731
.734
.738
.741
1.75
.725
.728
.732
.735
.739
.742
.746
.749
.753
.756
.760
.763
1.8
.745
.749
.752
.756
.760
.763
.767
.770
.774
.778
.781
.785
DIR 2.3 RATIO CONVERSIONS − .875" FLAT
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
17574
290
256
166
.378
.115
.101
17600
294
259
167
.379
.119
.105
17382
294
260
169
.376
.121
.108
17525
292
260
172
.375
.126
.112
DIR High Lift
294
260
169
.380
.122
.108
Rated Duration @ 17576
.020" Tappet Lift 17549
314
279
186
.380
.154
.140
17537
312
280
189
.382
.158
.144
17570
316
281
185
.374
.153
.139
17538
314
282
191
.384
.162
.147
17605
318
282
187
.379
.156
.142
17572
320
285
189
.376
.159
.146
50
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
2.20
.832
.834
.827
.825
.836
.836
.840
.823
.845
.834
.827
1 • 8 0 0 • 9 9 9 • 0 8 5 3
2.30
.869
.872
.865
.863
.874
.874
.879
.860
.883
.872
.865
2.40
.907
.910
.902
.900
.912
.912
.917
.898
.922
.910
.902
SOLID FLAT TAPPET
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
2.2
2.3
17238
280
247
158
.369
.102
.088
.812
.849
17239
282
249
160
.370
.105
.092
.814
.851
17240
284
251
162
.371
.109
.095
.816
.853
BB & GG COT
286
253
163
.372
.112
.098
.818
.856
Rated Duration @ 17241
.875" Min. Dia.
17242
288
255
165
.373
.116
.102
.821
.858
17244
290
256
165
.376
.115
.101
.827
.865
17245
292
258
167
.377
.118
.104
.829
.867
17246
294
260
169
.378
.121
.108
.832
.869
17248
298
264
173
.380
.128
.114
.836
.874
2.4
.886
.888
.890
.893
.895
.902
.905
.907
.912
SOLID FLAT TAPPET
BB GG .875" PLATE
TDP FLAT PLATE
Rated
Camshaft Type Lobe # Duration
TDP Flat Plate
Rated Duration @
.020" Tappet Lift
.875" Min. Dia.
9635
9636
9637
9638
9639
270
272
274
276
278
Duration in
Degrees
@ .050
241
243
245
247
249
@ .200
154
156
158
160
162
Lobe
Lift
.354
.356
.358
.360
.362
Tappet Lift
@ TDC
106°
.094
.098
.102
.105
.109
110°
.081
.084
.088
.091
.095
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
2.0
.708
.712
.716
.720
.724
2.1
.743
.748
.752
.756
.760
2.2
.779
.783
.788
.792
.796
TDP 2 FLAT PLATE
Rated
Camshaft Type Lobe # Duration
TDP 2 Flat Plate
Rated Duration @
.020" Tappet Lift
.875" Min. Dia.
9631
9632
9633
270
272
274
Duration in
Degrees
@ .050
241
243
245
@ .200
154
156
158
Lobe
Lift
.344
.346
.348
Tappet Lift
@ TDC
106°
.094
.098
.102
110°
.081
.084
.088
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
2.0
.688
.692
.696
2.1
.722
.727
.731
2.2
.757
.761
.766
TDP FLAT PLATE − LOWER LOBE LIFT
Rated
Camshaft Type Lobe # Duration
TDP - LLL
Rated Duration @
.020" Tappet Lift
.875" Min. Dia.
9602
9603
9604
9605
9606
9608
270
272
274
276
278
280
Duration in
Degrees
@ .050
241
243
245
247
249
251
@ .200
153
155
157
159
161
163
Lobe
Lift
.334
.336
.338
.340
.342
.344
Tappet Lift
@ TDC
106°
.094
.098
.102
.105
.109
.112
110°
.081
.084
.088
.091
.095
.098
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
2.0
.668
.672
.676
.680
.684
.688
W W W . C O M P C A M S . C O M
2.1
.701
.706
.710
.714
.718
.722
2.2
.735
.739
.744
.748
.752
.757
51
SOLID FLAT TAPPET
SOLID FLAT TAPPET
HY FLAT PLATE
Rated
Camshaft Type Lobe # Duration
HY Flat Plate
Rated Duration @
.020" Tappet Lift
.875" Min. Dia.
9829
9830
9831
9832
9833
9834
9835
9837
273
275
277
279
281
283
285
289
Duration in
Degrees
@ .050
244
246
248
250
252
254
256
260
@ .200
159
161
163
165
167
169
171
175
Lobe
Lift
.348
.350
.352
.354
.356
.358
.360
.364
Tappet Lift
@ TDC
106°
.103
.107
.110
.114
.118
.121
.125
.133
110°
.089
.092
.096
.099
.103
.107
.110
.118
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
2.0
.696
.700
.704
.708
.712
.716
.720
.728
2.1
.731
.735
.739
.743
.748
.752
.756
.764
2.2
.766
.770
.774
.779
.783
.788
.792
.801
CHRYSLER SPECIAL SOLIDS
These lobes are for use only in Chrysler Corporation engines with .904" tappet diameter. They are to be used in 426c.i.
or larger engines. Developed for the Top Fuel drag racing program, these designs offer excellent torque and horsepower.
Rated
Camshaft Type Lobe # Duration
Chrysler Special
Rated Duration @
.020" Tappet Lift
.904" Min. Dia.
6129
6130
6132
6133
6131
6134
324-7
328-10
330-1
330-2
334-1
335-1
Duration in
Degrees
@ .050
290
296
290
292
296
300
@ .200
200
208
200
200
203
207
Lobe Lift
.433
.425
.410
.395
.413
.438
Tappet Lift
@ TDC
106°
.176
.193
.170
.175
.186
.193
110°
.161
.178
.154
.160
.171
.177
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.650
.638
.615
.592
.620
.657
1.6
.693
.680
.656
.632
.660
.700
1.7
.736
.723
.697
.671
.702
.745
MP SOLIDS
The MP Series uses a design similar to the TL Series except these have more area due to being designed with more
velocity for a .904" minimum tappet diameter. They are very good in Late Model Stock applications where rules allow the larger tappet diameter. NOTE: Cams using these lobes should have provisions for increased oiling. Please
consult with a COMP® Cams technical representative.
Rated
Camshaft Type Lobe # Duration
MP Solids
Rated Duration @
.020" Tappet Lift
.904" Min. Dia.
.018" Lash
52
6610
6611
6612
274
284
288
Duration in
Degrees
@ .050
247
251
256
@ .200
162
166
171
Lobe Lift
.345
.355
.365
Tappet Lift
@ TDC
106°
.108
.115
.123
110°
.093
.100
.108
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.518
.533
.548
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.6
.552
.568
.584
1.7
.587
.604
.621
SOLID FLAT TAPPET
MM solids are similar to the MH and MHF Series but have even more velocity and more area to take complete advantage
of the larger .904" Chrysler/Mopar lifter. Please consult with a COMP Cams® CAM HELP® technician or one of our Engine
Builder Sales personnel before using these profiles to reduce the risk from improper component selection. NOTE: Cams
using these lobes should have provisions for increased oiling. Please consult with our tech representative.
Rated
Camshaft Type Lobe # Duration
MM
Rated Duration @
.020" Tappet Lift
.904" Min. Dia.
.018" Lash
6580
6581
6582
6579
6583
6584
6585
6586
6587
6588
6589
6590
6591
261
265
269
271
273
277
281
285
289
293
297
301
305
Duration in
Degrees
@ .050
235
239
243
245
247
251
255
259
263
267
271
275
279
Lobe
Lift
@ .200
153
157
161
163
165
169
173
177
181
185
189
193
197
.350
.358
.366
.370
.373
.380
.388
.396
.404
.411
.418
.426
.433
Tappet Lift
@ TDC
106°
.089
.096
.104
.108
.111
.119
.126
.134
.142
.149
.157
.164
.172
110°
.075
.082
.089
.093
.096
.104
.111
.119
.126
.134
.142
.149
.157
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.525
.537
.549
.554
.560
.570
.582
.594
.606
.617
.627
.639
.650
1.6
.560
.573
.586
.591
.597
.608
.621
.634
.646
.658
.669
.682
.693
1.7
.595
.609
.622
.628
.634
.646
.660
.673
.687
.699
.711
.724
.736
SOLID FLAT TAPPET
MM SOLIDS
SOLID ROLLER
HIGH ENERGY™ STREET ROLLERS
Designed specifically for street use, these Street Rollers offer unique approach ramps allowing the use of lower seat pressure to ensure long life. These lobes are very "soundy" or "throaty" because of the opening and closing ramp designs.
Rated
Camshaft Type Lobe # Duration
High Energy™
Street
Rated Duration @
.015" Tappet Lift
Valve Lash
.020"
1496
4002
1498
1474
1476
4220
4221
268HER-2
272HER-2
276HER-2
280HER-2
288HER-4
300HER-2
308HER-4
Duration in
Degrees
@ .050
224
228
232
236
244
255
262
@ .200
141
144
148
152
158
170
176
Lobe
Lift
.3500
.3500
.3500
.3666
.3666
.3833
.3833
Tappet Lift
@ TDC
106°
.068
.073
.078
.085
.098
.119
.130
110°
.056
.061
.066
.072
.084
.104
.115
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.525
.525
.525
.550
.550
.575
.575
W W W . C O M P C A M S . C O M
1.6
.560
.560
.560
.586
.586
.613
.613
1.7
.595
.595
.595
.623
.623
.651
.651
53
SOLID ROLLER
SOLID ROLLER
XTREME ENERGY™ STREET ROLLERS
This newest addition to the Xtreme family of lobes delivers the responsiveness, torque and reliability only available with
COMP Cams® Xtreme designs coupled with the high RPM power of modern race roller designs. Our development test included Spintron dynamics evaluations, engine dyno testing, chassis dyno testing and three Hot Rod Power Tours. Coupled
with the COMP Cams® Endure-X™ Roller Lifters, these profiles bring street roller technology into the new millennium.
Rated
Camshaft Type Lobe # Duration
Xtreme Energy™
Street Standard
Ratio
Rated Duration @
.015" Tappet Lift
Valve Lash
.014"-.018"
Xtreme Energy™
Street
High Ratio
Rated Duration @
.015" Tappet Lift
Valve Lash
.014"-.018"
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
256XSR
262XSR
268XSR
274XSR
280XSR
286XSR
292XSR
298XSR
304XSR
310XSR
@ .050
218
224
230
236
242
248
254
260
266
272
@ .200
141
147
153
159
164
170
176
181
187
193
.360
.360
.368
.376
.380
.384
.388
.392
.398
.404
106°
.056
.066
.076
.087
.098
.110
.122
.135
.137
.159
110°
.045
.053
.062
.072
.083
.094
.106
.118
.130
.143
1.5
.540
.540
.552
.564
.570
.576
.582
.588
.597
.606
1.6
.576
.576
.589
.602
.608
.614
.621
.627
.637
.646
1.7
.612
.612
.626
.639
.646
.653
.660
.666
.677
.687
4850
4851
4855
4854
4852
4853
4856
4857
4858
4859
4860
4861
259
265
267
270
274
280
284
288
292
296
300
308
219
225
227
230
234
240
244
248
252
256
260
268
131
136
138
140
144
149
152
155
161
164
167
173
.330
.330
.330
.330
.330
.335
.335
.335
.346
.346
.346
.346
.055
.064
.067
.070
.076
.086
.092
.099
.106
.112
.119
.132
.045
.053
.055
.058
.064
.053
.079
.085
.092
.099
.105
.118
.495
.495
.495
.495
.495
.503
.503
.503
.519
.519
.519
.519
.528
.528
.528
.528
.528
.536
.536
.536
.554
.554
.554
.554
.561
.561
.561
.561
.561
.570
.570
.570
.588
.588
.588
.588
XTREME ENERGY™ DURAMAX STREET ROLLERS
These lobes are similar to the Xtreme Energy™ Street Rollers and are optimized for the GM Duramax applications. Intake profiles are designed around a 1.37:1 ratio and exhaust profiles for a 1.69:1 ratio. The exhaust lobes are slightly less aggressive
for the Duramax valve train system. These profiles are designed for .006" to .010" cold lash. The exhaust lobes go up in 14°
increments compared to 12° for the intakes in order to reduce exhaust pumping losses in higher RPM applications. Rated
Camshaft Type Lobe # Duration
Xtreme Energy™
Duramax Int.
Rated Duration @
.006" Tappet Lift
Xtreme Energy™
Duramax Exh.
Rated Duration @
.006" Tappet Lift
54
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
4884
4886
4888
246
258
270
@ .050
185
197
209
@ .200
106
119
132
.306
.329
.350
106°
.019
.030
.044
110°
.014
.022
.034
1.37
.420
.450
.480
1.37
.420
.450
.480
1.37
.420
.450
.480
4894
4896
254
268
@ .050
188
202
@ .200
84
101
.249
.266
106°
.028
.041
110°
.022
.033
1.69
.420
.450
1.69
.420
.450
1.69
.420
.450
4898
282
216
117
.284
.057
.047
.480
.480
.480
1 • 8 0 0 • 9 9 9 • 0 8 5 3
SOLID ROLLER
A twenty year culmination of design and research, these lobes range from extra gentle to very aggressive. Included in this
group are the High Torque Roller and High Torque Oval Roller Series used in the early 80s.
Rated
Camshaft Type Lobe # Duration
Base Design
Rated Duration @
.020" Tappet Lift
Base Design
Rated Duration @
.020" Tappet Lift
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1460
1462
1464
1465
4034
1473
1466
1677
4000
1609
4035
4059
4242
1611
1612
1613
1479
4066
4244
1617
1628
1658
1620
1486
285-2
286-1
295-2
295-3
295-5
296-1
296-2
302-1
305-2
305-3
305-4
306-1
306-2
308-2
309-2
310-2
312-2
316-1
316-2
316-3
324-4
320-1
320-2
321-4
@ .050
252
250
262
262
260
260
265
265
272
270
272
270
273
275
276
280
279
276
284
282
287
281
288
284
@ .200
164
162
174
176
170
173
180
177
186
186
184
186
190
191
196
195
197
186
200
200
201
196
201
196
.375
.392
.366
.390
.394
.393
.400
.395
.366
.418
.394
.400
.416
.452
.420
.545
.425
.413
.433
.454
.423
.450
.434
.440
106°
.110
.112
.128
.128
.116
.124
.137
.132
.146
.146
.151
.145
.153
.156
.163
.165
.167
.150
.176
.173
.174
.164
.179
.170
110°
.096
.096
.114
.113
.102
.108
.121
.116
.132
.130
.135
.130
.137
.139
.146
.147
.150
.134
.159
.156
.159
.148
.163
.154
1.5
.563
.588
.549
.585
.591
.590
.600
.593
.549
.627
.591
.600
.624
.678
.630
.818
.638
.620
.650
.681
.635
.675
.651
.660
1.6
.600
.627
.586
.624
.630
.629
.640
.632
.586
.669
.630
.640
.666
.723
.672
.872
.680
.661
.693
.726
.677
.720
.694
.704
1.7
.638
.666
.622
.663
.670
.668
.680
.672
.622
.711
.670
.680
.707
.768
.714
.927
.723
.702
.736
.772
.719
.765
.738
.748
4025
1469
4062
4087
1630
1394
1659
1639
1619
1392
322-1
322-2
323-5
324-2
325-4
327-5
328-1
329-5
319-2
319-3
282
288
287
286
288
290
286
292
285
285
193
204
202
197
198
204
192
200
202
200
.427
.458
.460
.454
.440
.460
.413
.440
.456
.460
.163
.185
.180
.171
.176
.179
.163
.177
.179
.173
.147
.165
.164
.155
.160
.163
.145
.161
.161
.156
.641
.687
.690
.681
.660
.690
.620
.660
.684
.690
.683
.733
.736
.726
.704
.736
.661
.704
.730
.736
.726
.779
.782
.772
.748
.782
.702
.748
.775
.782
SOLID ROLLER
BASE DESIGN ROLLERS
URGENT!
In a hurry? COMP Cams® can usually deliver in 48 hours.
We work hard to provide results for your unique application
in a matter of days.
1.800.999.0853 • compcams.com
W W W . C O M P C A M S . C O M
55
SOLID ROLLER
SOLID ROLLER
HI-TECH™ ROLLERS
These designs are typically used with high rocker ratios (1.65-1.75) and efficient cylinder heads. The Hi-Tech™ .400" is
great for Big Block Chevy, Big Block Fords and Clevelands. Due to their lower acceleration rates, these lobe designs are
also very well suited for small block, high endurance applications.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.5
1.6
1.7
1461
288-7
251
167
.400
.116
.102
.600
.640
.680
4210
296-7
259
175
.400
.129
.114
.600
.640
.680
4211
306-7
269
182
.400
.146
.131
.600
.640
.680
4058
316-7
279
190
.400
.161
.146
.600
.640
.680
Hi-Tech™
Rated Duration @
.020" Tappet Lift
HIGH TORQUE .406" ROLLERS
The High Torque .406", when coupled with higher rocker ratios (1.7 and up), result in very aggressive valve motion. These
provide excellent torque curves and great responsiveness. The smaller lobes are great for restricted applications and the
larger lobes provide stronger alternatives to the High Torque .440" profiles when coupled with higher rocker ratios to
achieve equivalent valve lift.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
4600
280-6
248
169
.406
.106
.091
4601
284-6
252
172
.406
.114
.098
High Torque
1477
288-6
256
176
.406
.122
.106
.406"
4209
292-6
260
180
.406
.131
.114
Rated Duration @
296-4
264
184
.406
.139
.122
.020" Tappet Lift 4206
4207
300-7
268
188
.406
.148
.131
4208
304-7
272
192
.406
.156
.136
4205
308-7
276
195
.406
.164
.147
1481
312-14
280
199
.406
.173
.156
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.609
.609
.609
.609
.609
.609
.609
.609
.609
1.6
.650
.650
.650
.650
.650
.650
.650
.650
.650
1.7
.690
.690
.690
.690
.690
.690
.690
.690
.690
HI-TECH™ .420" EXHAUST ROLLERS
These designs are used primarily on the exhaust side of the motor. The Hi-Tech™ .420 " Exhaust Rollers offer controlled
valve opening which promotes torque over broad ranges. These lobes are great for oval track cams.
Rated
Camshaft Type Lobe # Duration
Hi-Tech™
.420" Exh.
Rated Duration @
.020" Tappet Lift
56
4005
4007
4003
4027
4029
4023
4046
4045
4047
4019
4049
294-6
296-6
298-6
300-6
302-6
304-6
306-6
308-6
310-6
312-6
316-6
Duration in
Degrees
@ .050
256
258
260
262
264
266
268
270
272
274
278
@ .200
171
173
175
177
179
180
182
183
185
187
189
Lobe
Lift
.420
.420
.420
.420
.420
.420
.420
.420
.420
.420
.420
Tappet Lift
@ TDC
106°
.117
.123
.125
.130
.133
.137
.141
.144
.148
.151
.158
110°
.103
.108
.111
.115
.117
.122
.126
.129
.133
.136
.142
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.630
.630
.630
.630
.630
.630
.630
.630
.630
.630
.630
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.6
.672
.672
.672
.672
.672
.672
.672
.672
.672
.672
.672
1.7
.714
.714
.714
.714
.714
.714
.714
.714
.714
.714
.714
SOLID ROLLER
The Hi-Tech™ .420" Rollers are primarily used in oval track racing with good cylinder heads. The ramp designs are easy on
valve springs yet produce good power. They are great for long rod motors. They are also popular in bracket and marine applications where power with durability are a must. Also available in Small Block Ford and Big Block Chevy or 50mm sizes to
prevent "cam growth" in the grinding process, allowing the engine builder to have more control over the tuning process.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.5
1.6
4001
284-5
248
165
.420
.108
.094
.630
.672
4004
286-5
250
167
.420
.112
.098
.630
.672
4006
288-5
252
169
.420
.116
.101
.630
.672
4009
290-5
254
171
.420
.119
.105
.630
.672
4008
292-5
256
173
.420
.123
.108
.630
.672
4013
294-5
258
175
.420
.127
.112
.630
.672
4017
296-5
260
177
.420
.131
.116
.630
.672
™
Hi-Tech
4015
298-5
262
179
.420
.136
.120
.630
.672
Rated Duration @
4022
300-5
264
181
.420
.140
.124
.630
.672
.020" Tappet Lift
4020
302-5
266
183
.420
.143
.127
.630
.672
4024
304-5
268
184
.420
.146
.130
.630
.672
4018
306-5
270
186
.420
.150
.134
.630
.672
4026
308-5
272
188
.420
.154
.138
.630
.672
4016
310-5
274
189
.420
.157
.141
.630
.672
4028
312-5
276
190
.420
.160
.144
.630
.672
4030
314-5
278
192
.420
.163
.148
.630
.672
4031
316-5
280
193
.420
.166
.151
.630
.672
4032
318-5
282
195
.420
.170
.154
.630
.672
1.7
.714
.714
.714
.714
.714
.714
.714
.714
.714
.714
.714
.714
.714
.714
.714
.714
.714
.714
SOLID ROLLER
HI-TECH™ .420" ROLLERS
RT ROLLERS
The RT Series provides shorter seat timing and more area than our Hi-Tech™ .420" Series. This results in great torque and
power potential. Available in Small Block Ford and Big Block Chevy or 50mm sizes to prevent "cam growth" in the grinding
process, allowing the engine builder to have more control over the tuning process of the cam.
Rated
Camshaft Type Lobe # Duration
RT
Rated Duration @
.020" Tappet Lift
4121
4123
4124
4126
4127
4130
4128
4129
4131
4132
4133
4134
4135
4136
4137
4139
4138
RT274-1
RT276-2
RT278-3
RT280-1
RT282-1
RT284-1
RT286-1
RT288-1
RT290-1
RT292-1
RT294-1
RT296-1
RT298-1
RT300-1
RT302-1
RT304-1
RT308-1
Duration in
Degrees
@ .050
244
246
248
250
252
254
256
258
260
262
264
266
268
270
272
274
278
@ .200
167
169
171
173
175
177
179
181
183
185
186
189
190
191
193
195
197
Lobe
Lift
.410
.412
.414
.416
.418
.421
.423
.426
.430
.430
.430
.430
.435
.435
.435
.435
.435
Tappet Lift
@ TDC
106°
.101
.105
.107
.113
.117
.120
.125
.131
.134
.140
.142
.148
.150
.154
.158
.162
.168
110°
.086
.089
.092
.097
.101
.104
.109
.114
.117
.123
.125
.130
.132
.137
.141
.144
.151
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.615
.618
.621
.624
.627
.632
.635
.639
.645
.645
.645
.645
.653
.653
.653
.653
.653
W W W . C O M P C A M S . C O M
1.6
.656
.659
.662
.666
.669
.674
.677
.682
.688
.688
.688
.688
.696
.696
.696
.696
.696
1.7
.697
.700
.704
.707
.711
.716
.719
.724
.731
.731
.731
.731
.740
.740
.740
.740
.740
continued on page 58
57
SOLID ROLLER
SOLID ROLLER
NC ROLLERS
Designed with aggressive opening side of the RT Series lobes and the easier closing rate of the ever popular Hi-Tech™ -5 series,
the NC series allows good engine speed, stability and durability. This fast open, slower closing design works very well on the exhaust side of many applications.
Rated
Camshaft Type Lobe # Duration
NC
Rated Duration @
.020" Tappet Lift
4151
4152
4150
4153
4149
4145
4147
4144
4146
4143
4148
284
286
288
290
292
295
296
298
300
302
304
Duration in
Degrees
@ .050
252
254
256
258
260
262
264
266
268
270
272
@ .200
172
173
177
178
181
183
183
185
187
190
192
Lobe
Lift
.405
.405
.415
.415
.421
.421
.421
.425
.430
.430
.430
Tappet Lift
@ TDC
106°
.115
.117
.123
.125
.131
.138
.140
.143
.146
.153
.158
110°
.099
.101
.107
.109
.114
.122
.123
.127
.130
.136
.141
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.608
.608
.623
.623
.632
.632
.632
.638
.645
.645
.645
1.6
.648
.648
.664
.664
.674
.674
.674
.680
.688
.688
.688
1.7
.689
.689
.706
.706
.716
.716
.716
.723
.731
.731
.731
NSC ROLLERS
The NSC series is very similar to the original NC series but uses a smoother -6 style closing ramp. This fast open, slower
closing design works very well on the exhaust side of many applications, especially those that are larger displacement or
higher engine speeds than where the original NC designs would be used.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.5
1.6
1.7
4163
309
276
195
.440
.167
.150
.660
.704
.748
4167
311
278
196
.440
.170
.154
.660
.704
.748
NSC
4168
313
280
198
.440
.174
.158
.660
.704
.748
Rated Duration @
4162
315
282
200
.440
.178
.162
.660
.704
.748
.020" Tappet Lift
4160
317
284
201
.440
.181
.165
.660
.704
.748
4164
319
286
203
.440
.185
.169
.660
.704
.748
4165
321
288
205
.440
.189
.173
.660
.704
.748
4166
323
290
207
.440
.193
.177
.660
.704
.748
58
1 • 8 0 0 • 9 9 9 • 0 8 5 3
SOLID ROLLER
The RZ Rollers are designed for high RPM circle track, drag race and endurance applications that benefit from higher lift
while requiring stability and reliability. Designed for 1.6:1 to 1.8:1 rockers, these profiles incorporate the latest developments
in high RPM and high rocker ratio developments. Rated
Camshaft Type Lobe # Duration
RZ
Rated Duration @
.020" Tappet Lift
4260
4261
4262
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4276
4277
RZ293
RZ295
RZ297
RZ301
RZ303
RZ305
RZ307
RZ309
RZ311
RZ313
RZ315
RZ317
RZ319
RZ321
RZ325
RZ329
Duration in
Degrees
@ .050
260
262
264
268
270
272
274
276
278
280
282
284
286
288
292
296
@ .200
174
176
178
182
184
186
188
190
192
194
196
197
199
201
205
208
Lobe
Lift
.428
.430
.430
.432
.433
.434
.435
.436
.437
.438
.439
.440
.441
.442
.444
.446
Tappet Lift
@ TDC
106°
.122
.126
.129
.137
.141
.145
.149
.153
.157
.161
.164
.168
.172
.176
.183
.191
110°
.107
.111
.114
.122
.125
.129
.133
.137
.141
.145
.148
.152
.156
.160
.167
.175
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.643
.645
.645
.648
.650
.651
.653
.654
.656
.657
.659
.660
.662
.663
.666
.669
1.6
.685
.688
.688
.691
.693
.694
.696
.698
.699
.701
.702
.704
.706
.707
.710
.714
1.7
.728
.731
.731
.734
.736
.738
.740
.741
.743
.745
.746
.748
.750
.751
.755
.758
SOLID ROLLER
RZ ROLLERS
RZ LOW LIFT ROLLERS
These lower lift versions of the RZ family work very well in high endurance applications where maximum valve lift needs to
be limited to ensure maximum valve spring life.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
2314
283
250
161
.370
.103
.089
2315
287
254
164
.370
.110
.096
4294
289
256
167
.390
.113
.099
2318
291
258
168
.370
.117
.103
4293
291
258
171
.400
.118
.103
4295
293
260
171
.390
.121
.106
RZ Low Lift
4283
295
262
171
.370
.124
.110
Rated Duration @
4286
295
262
175
.400
.125
.110
.020" Tappet Lift
4284
297
264
174
.375
.128
.113
4278
299
266
178
.400
.133
.118
4285
301
268
178
.380
.135
.121
4287
301
268
180
.400
.136
.121
4296
303
270
181
.385
.139
.125
4279
305
272
182
.380
.143
.128
2735
315
282
194
.420
.164
.148
2298
317
284
193
.380
.163
.149
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.555
.555
.585
.555
.600
.585
.555
.600
.563
.600
.570
.600
.578
.570
.630
.570
W W W . C O M P C A M S . C O M
1.6
.592
.592
.624
.592
.640
.624
.592
.640
.600
.640
.608
.640
.616
.608
.672
.608
1.7
.629
.629
.663
.629
.680
.663
.629
.680
.638
.680
.646
.680
.655
.646
.714
.646
59
SOLID ROLLER
SOLID ROLLER
AS ENDURANCE ROLLERS
The AS Endurance Roller lobe family is for use in 24-hour or longer endurance roller cam applications or where a slow
camshaft is desired to reduce power or shape the torque curve.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
20519
20520
@ .020
289
293
@ .050
256
260
@ .200
167
171
.380
.380
106°
.115
.122
110°
.101
.108
1.6
.608
.608
1.7
.646
.646
1.8
.684
.684
20525
300
266
175
.380
.132
.118
.608
.646
.684
20515
ALI
Rated Duration @ 20521
.006" Tappet Lift 20522
284
288
292
252
256
260
166
170
173
.400
.400
.400
.111
.117
.125
.097
.103
.110
.640
.640
.640
.680
.680
.680
.720
.720
.720
ALX
Rated Duration @
.006" Tappet Lift
20527
300
266
177
.400
.134
.119
.640
.680
.720
SLW
Rated Duration @
.006" Tappet Lift
20535
296
260
166
.360
.120
.107
.576
.612
.648
ASI
Rated Duration @
.020" Tappet Lift
ASX
Rated Duration @
.006" Tappet Lift
TC ROLLERS
The TC lobes are specially designed to be stable in small base circle applications or where short duration and high lift
are required. Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.5
11460
267
236
156
.420
.085
.072
.630
11462
271
240
160
.424
.092
.079
.636
11464
275
244
164
.428
.099
.085
.642
TC
279
248
168
.432
.106
.092
.648
Rated Duration @ 11466
.020" Tappet Lift 11468
283
252
172
.436
.114
.099
.654
11470
287
256
176
.440
.122
.106
.660
11472
291
260
180
.444
.130
.114
.666
11474
295
264
184
.448
.138
.122
.672
11476
299
268
188
.452
.146
.130
.678
60
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.6
.672
.678
.685
.691
.698
.704
.710
.717
.723
1.7
.714
.721
.728
.734
.741
.748
.755
.762
.768
SOLID ROLLER
These are similar to the RT Series but are designed for a higher RPM operating range. These were developed to allow the performance of RT designs in applications that operate well over 8400 RPM, such as the NASCAR Nationwide, Camping World
Truck Series and ARCA engines. RX profiles were developed using dynamic testing to ensure stability over 9000 RPM, even
when coupled with a 1.7:1 rocker arm.
Rated
Camshaft Type Lobe # Duration
RX
Rated Duration @
.020" Tappet Lift
4301
4302
4303
4304
4305
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4340
4341
286
288
290
292
294
296
298
300
302
304
306
308
310
312
314
316
318
320
322
Duration in
Degrees
@ .050
253
255
257
259
261
263
265
267
269
271
273
275
277
279
281
283
285
287
289
Lobe
Lift
@ .200
172
174
176
177
179
181
183
185
187
189
191
193
195
197
199
201
203
205
207
.427
.428
.429
.430
.431
.432
.433
.434
.435
.436
.437
.438
.439
.440
.440
.440
.440
.440
.440
Tappet Lift
@ TDC
106°
.114
.118
.122
.126
.130
.134
.139
.143
.147
.151
.155
.160
.164
.168
.172
.176
.180
.185
.189
110°
.099
.103
.107
.110
.114
.118
.122
.126
.130
.134
.138
.143
.147
.151
.155
.159
.163
.167
.172
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.641
.642
.644
.645
.647
.648
.650
.651
.653
.654
.656
.657
.659
.660
.660
.660
.660
.660
.660
1.6
.683
.685
.686
.688
.690
.691
.693
.694
.696
.698
.699
.701
.702
.704
.704
.704
.704
.704
.704
1.7
.726
.728
.729
.731
.733
.734
.736
.738
.740
.741
.743
.745
.746
.748
.748
.748
.748
.748
.748
SOLID ROLLER
RX ROLLERS
CR ROLLERS
The CR Series profiles are excellent for high RPM, high rocker ratio applications where good valve train components can be used.
The smaller profiles work well in restricted applications where extended life is required and the larger profiles are excellent in high
RPM open applications. Rated
Camshaft Type Lobe # Duration
CR
Rated Duration @
.020" Tappet Lift
4345
4346
4347
4348
4349
4382
4383
4384
4385
4386
2486
4387
4388
2488
4389
CR281
CR283
CR285
CR287
CR289
CR291
CR293
CR295
CR297
CR299
299
CR301
CR303
303
CR305
Duration in
Degrees
@ .050
250
252
254
256
258
260
262
264
266
268
268
270
272
272
274
@ .200
168
170
172
174
176
178
179
181
183
185
186
186
188
190
190
Lobe
Lift
.395
.395
.395
.395
.395
.395
.395
.395
.395
.395
.420
.395
.395
.420
.395
Tappet Lift
@ TDC
106°
.111
.115
.119
.123
.127
.131
.135
.139
.143
.147
.147
.150
.154
.156
.158
110°
.096
.100
.104
.107
.111
.115
.119
.123
.127
.131
.131
.134
.138
.139
.142
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
.672
.672
.672
.672
.672
.672
.672
.672
.672
.672
.714
.672
.672
.714
.672
1.75
.691
.691
.691
.691
.691
.691
.691
.691
.691
.691
.735
.691
.691
.735
.691
1.8
.711
.711
.711
.711
.711
.711
.711
.711
.711
.711
.756
.711
.711
.756
.711
continued on page 62
W W W . C O M P C A M S . C O M
61
SOLID ROLLER
SOLID ROLLER
CR ROLLERS cont.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
2489
305
274
192
.420
.160
.143
4390
CR307
276
192
.395
.161
.146
2490
307
276
194
.420
.164
.147
4391
CR309
278
193
.395
.165
.149
CR
4682
CR311
280
195
.395
.169
.153
Rated Duration @
2492
311
280
198
.420
.172
.155
.020" Tappet Lift
4683
CR313
282
197
.395
.172
.157
4684
CR315
284
199
.395
.176
.161
2494
315
284
201
.420
.180
.163
4685
CR317
286
200
.395
.180
.165
4686
CR319
288
202
.395
.183
.168
4687
CR321
290
204
.395
.187
.172
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
.714
.672
.714
.672
.672
.714
.672
.672
.714
.672
.672
.672
1.75
.735
.691
.735
.691
.691
.735
.691
.691
.735
.691
.691
.691
1.8
.756
.711
.756
.711
.711
.756
.711
.711
.756
.711
.711
.711
CR LIFT RULE ROLLERS
These low lift designs are based on the CR Rollers and are specifically designed for lift rule application such as Rev-Oil Pro
Cup. Typically they will be used with either 1.65:1 or 1.7:1 rocker ratios, but would be stable with up to 1.8:1 ratios.
Rated
Camshaft Type Lobe # Duration
CR Lift Rule
.367"
Rated Duration @
.020" Tappet Lift
CR Lift Rule
.378"
Rated Duration @
.020" Tappet Lift
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
4436
4427
4428
4429
4430
4431
4432
4433
4438
275
279
283
287
291
295
299
303
307
@ .050
244
248
252
256
260
264
268
272
276
@ .200
161
165
168
172
175
179
182
186
189
.367
.367
.367
.367
.367
.367
.367
.367
.367
106°
.100
.107
.115
.123
.130
.138
.146
.153
.159
110°
.085
.092
.100
.107
.115
.122
.130
.137
.145
1.6
.587
.587
.587
.587
.587
.587
.587
.587
.587
1.65
.606
.606
.606
.606
.606
.606
.606
.606
.606
1.7
.624
.624
.624
.624
.624
.624
.624
.624
.624
4445
4447
4449
4451
283
287
291
295
252
256
260
264
168
172
175
179
.378
.378
.378
.378
.115
.123
.131
.138
.100
.107
.115
.123
.605
.605
.605
.605
.624
.624
.624
.624
.643
.643
.643
.643
ZT ROLLERS
The ZT Rollers are a high rocker ratio, high RPM series designed to take advantage of valve spring developments that allow valve
lifts up to and above .750" in endurance applications. These are designed for NASCAR Nationwide, Camping World Truck, ARCA
and other endurance applications that have similar RPM and lift requirements. Recommended for use with either COMP Cams®
#26099 or #26091 springs.
Rated
Camshaft Type Lobe # Duration
ZT
Rated Duration @
.020" Tappet Lift
62
4814
4815
4816
4817
290
292
294
296
Duration in
Degrees
@ .050
258
260
262
264
@ .200
175
177
179
181
Lobe
Lift
.406
.407
.408
.409
Tappet Lift
@ TDC
106°
.124
.128
.133
.137
110°
.110
.114
.117
.121
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
.690
.692
.694
.695
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.75
1.8
.711
.731
.712
.733
.714
.734
.716
.736
continued on page 63
SOLID ROLLER
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
4818
298
266
182
.410
.141
.125
4819
300
268
184
.411
.145
.129
4820
302
270
186
.412
.149
.133
ZT
304
272
188
.413
.153
.137
Rated Duration @ 4821
.020" Tappet Lift 4822
306
274
190
.412
.157
.141
4823
308
276
192
.416
.161
.144
4824
310
278
194
.418
.165
.149
4826
312
280
196
.418
.169
.152
4827
314
282
198
.420
.173
.157
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
.697
.699
.700
.702
.700
.707
.711
.711
.714
1.75
.718
.719
.721
.723
.721
.728
.732
.732
.735
1.8
.738
.740
.742
.743
.742
.749
.752
.752
.756
SOLID ROLLER
ZT ROLLERS cont.
ZS ROLLERS
The ZS Rollers are a high ratio roller series for restricted applications limited to below 8400 RPM. These are very good for applications that benefit from higher lift than the HRR series. These profiles work well with the new generation valve springs such as
COMP Cams® #26099 and #26091. The ZS Series II are the same as the .413" lobe lift versions except these have increasing
lobe lift as the duration increases.
Rated
Camshaft Type Lobe # Duration
ZS .413" Lift
Rated Duration @
.020" Tappet Lift
ZS II
Rated Duration @
.020" Tappet Lift
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
4402
4404
4405
4406
4407
4408
4409
4416
4418
284
288
290
292
294
296
298
302
306
@ .050
254
258
260
262
264
266
268
272
276
@ .200
175
179
181
183
184
186
188
192
195
.413
.413
.413
.413
.413
.413
.413
.413
.413
106°
.122
.130
.134
.139
.143
.147
.151
.159
.167
110°
.106
.114
.118
.122
.126
.130
.134
.142
.150
1.7
.702
.702
.702
.702
.702
.702
.702
.702
.702
1.75
.723
.723
.723
.723
.723
.723
.723
.723
.723
1.8
.743
.743
.743
.743
.743
.743
.743
.743
.743
2950
2952
2953
2954
2958
280
284
286
288
296
250
254
256
258
266
175
179
181
183
184
.420
.424
.426
.428
.434
.114
.122
.126
.131
.147
.098
.106
.110
.114
.130
.714
.721
.724
.728
.738
.735
.742
.746
.749
.760
.756
.763
.767
.770
.781
TD, TJ & TJS ROLLERS
These TD designs are excellent for high ratio, four gauge 390 carb rules such as NASCAR Nationwide and Camping World Truck
Series applications. The TJs have slightly more lift but are a little smoother while the TJS rollers are very similar to the TJs except for
a slightly softer closing ramp.
Rated
Camshaft Type Lobe # Duration
TD
Rated Duration @
.020" Tappet Lift
2978
2979
2980
2981
2982
288
290
292
294
296
Duration in
Degrees
@ .050
258
260
262
264
266
@ .200
176
178
180
182
184
Lobe
Lift
.411
.412
.413
.414
.415
Tappet Lift
@ TDC
106°
.127
.131
.135
.139
.143
110°
.112
.116
.119
.123
.127
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
.699
.700
.702
.704
.706
W W W . C O M P C A M S . C O M
1.75
1.8
.719
.740
.721
.742
.723
.743
.725
.745
.726
.747
continued on page 64
63
SOLID ROLLER
SOLID ROLLER
TD, TJ & TJS ROLLERS cont.
Rated
Camshaft Type Lobe # Duration
TD
Rated Duration @
.020" Tappet Lift
TJ
Rated Duration @
.020" Tappet Lift
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
4321
2983
2984
2985
4327
4328
4329
2989
298
300
302
304
306
308
310
312
@ .050
268
270
272
274
276
278
280
282
@ .200
186
188
190
192
193
195
197
199
.416
.418
.420
.421
.424
.426
.428
.430
106°
.147
.151
.156
.159
.163
.167
.171
.175
110°
.131
.135
.139
.143
.147
.151
.155
.159
1.7
.707
.711
.714
.716
.721
.724
.728
.731
1.75
.728
.732
.735
.737
.742
.746
.749
.753
1.8
.749
.752
.756
.758
.763
.767
.770
.774
2962
2963
2964
2965
296
298
300
302
266
268
270
272
184
185
187
189
.420
.422
.424
.426
.143
.147
.151
.156
.127
.131
.135
.139
.714
.717
.721
.724
.735
.739
.742
.746
.756
.760
.763
.767
@ .050
@ .200
106°
110°
1.7
1.75
1.8
2881
297
266
183
.419
.412
.126
.712
.733
.754
2882
299
268
185
.421
.146
.130
.716
.737
.758
2885
305
274
191
.427
.158
.142
.726
.747
.769
TJS Series
Rated Duration @
.020" Tappet Lift
TS ROLLERS
These are an additional series of high rocker ratio profiles that are similar to both the ZT and ZS series, but these are
designed for slightly less rocker ratio.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.7
1.75
1.8
4837
295
264
183
.422
.141
.125
.717
.739
.760
TS
4838
297
266
185
.423
.145
.129
.719
.740
.761
Rated Duration @
4839
299
268
187
.425
.149
.133
.723
.744
.765
.020" Tappet Lift
4840
301
270
189
.426
.153
.137
.724
.746
.767
4841
303
272
191
.427
.157
.141
.726
.747
.769
4842
305
274
192
.428
.161
.145
.728
.749
.770
HIGH RATIO RESTRICTED ROLLERS
The HRR designs, when coupled with high rocker ratios, result in extremely quick valve action. 8100 RPM maximum with
light valve train. Very good in restricted applications.
Rated
Camshaft Type Lobe # Duration
High Ratio
Restricted
Rated Duration @
.020" Tappet Lift
4358
4359
4361
4362
4363
4364
4198
HRR260
HRR262
HRR264
HRR266
HRR268
HRR270
272
Duration in
Degrees
@ .050
230
232
234
236
238
240
242
@ .200
152
154
156
158
160
162
163
Lobe
Lift
.374
.377
.380
.383
.386
.389
.380
Tappet Lift
@ TDC
106°
.078
.082
.085
.089
.093
.097
.101
110°
.065
.068
.071
.075
.078
.082
.085
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
.636
.641
.646
.651
.656
.661
.646
1.75
.655
.660
.665
.670
.676
.681
.665
1.8
.673
.679
.684
.689
.695
.700
.684
continued on page 65
64
1 • 8 0 0 • 9 9 9 • 0 8 5 3
SOLID ROLLER
HIGH RATIO RESTRICTED ROLLERS cont.
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
4365
HRR272
242
164
.392
.101
.085
4366
HRR274
244
166
.396
.105
.089
4199
276
246
167
.380
.109
.093
4367
HRR276
246
168
.396
.109
.093
4196
278
248
169
.380
.113
.097
High Ratio
4368
HRR278
248
170
.396
.113
.097
Restricted
4370
HRR282
252
173
.396
.121
.104
Rated Duration @
4371
HRR284
254
175
.396
.125
.108
.020" Tappet Lift
4372
HRR286
256
177
.396
.129
.112
4373
HRR288
258
179
.396
.133
.116
4374
HRR290
260
180
.396
.137
.120
4375
HRR292
262
182
.396
.141
.124
4376
HRR294
264
184
.396
.145
.128
4377
HRR296
266
186
.396
.149
.133
4378
HRR298
268
188
.396
.153
.137
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
.666
.673
.646
.673
.646
.673
.673
.673
.673
.673
.673
.673
.673
.673
.673
1.75
.686
.693
.665
.693
.665
.693
.693
.693
.693
.693
.693
.693
.693
.693
.693
1.8
.706
.713
.684
.713
.684
.713
.713
.713
.713
.713
.713
.713
.713
.713
.713
SOLID ROLLER
Rated
Camshaft Type Lobe # Duration
RP ROLLERS
The RP Rollers are a high ratio roller series for restricted applications limited to below 8400 RPM. These are based off of
the latest flat tappet restrictor plate designs but have increased area as allowed with roller tappets. For use with 1.8 to
1.95:1 rocker ratios.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.8
1.85
1.9
2507
270
240
159
.381
.093
.080
.686
.705
.724
2508
272
242
161
.381
.097
.083
.686
.705
.724
2509
274
244
163
.381
.101
.086
.686
.705
.724
2510
276
246
165
.381
.104
.090
.686
.705
.724
2511
278
248
166
.381
.108
.093
.686
.705
.724
RP
2512
280
250
168
.381
.112
.097
.686
.705
.724
Rated Duration @
2513
282
252
170
.381
.115
.101
.686
.705
.724
.020" Tappet Lift
2514
284
254
172
.381
.119
.104
.686
.705
.724
2515
286
256
173
.381
.123
.108
.686
.705
.724
2516
288
258
175
.381
.127
.112
.686
.705
.724
2517
290
260
177
.381
.131
.115
.686
.705
.724
2518
292
262
179
.381
.135
.119
.686
.705
.724
2519
294
264
180
.381
.138
.123
.686
.705
.724
2520
296
266
182
.381
.142
.127
.686
.705
.724
SP ROLLERS
The SP Rollers are a high ratio roller series for restricted applications limited to below 8200 RPM. These lobes are more aggressive
than the RP series and can be used successfully with lower rocker ratios. For use with 1.7 to 1.9:1 rocker ratios. Also used in some
hydraulic roller applications. Rated
Camshaft Type Lobe # Duration
SP
Rated Duration @
.020" Tappet Lift
1514
1515
4793
264
268
273
Duration in
Degrees
@ .050
236
240
245
@ .200
158
161
166
Lobe
Lift
.374
.374
.378
Tappet Lift
@ TDC
106°
.089
.096
.108
110°
.074
.081
.092
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
.636
.636
.643
W W W . C O M P C A M S . C O M
1.8
1.9
.673
.711
.673
.711
.680
.718
continued on page 66
65
SOLID ROLLER
SOLID ROLLER
SP ROLLERS cont.
Rated
Camshaft Type Lobe # Duration
SP
Rated Duration @
.020" Tappet Lift
4784
4785
4788
4789
4830
4831
275
277
279
281
283
285
Duration in
Degrees
@ .050
247
249
251
253
255
257
@ .200
168
170
172
174
176
178
Lobe
Lift
.380
.382
.384
.386
.388
.390
Tappet Lift
@ TDC
106°
.112
.116
.120
.124
.128
.133
110°
.096
.100
.104
.108
.112
.116
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
.646
.649
.653
.656
.660
.663
1.8
.684
.688
.691
.695
.698
.702
1.9
.722
.726
.730
.733
.737
.741
RC ROLLERS
The RC rollers are designed to be faster off the seat than the RT profiles with more area than the High Torque .440" profiles.
These are slightly less aggressive than the TK profiles. Very good for Sprint Car and Late Model applications. Also used in some
hydraulic roller applications.
Rated
Camshaft Type Lobe # Duration
RC
Rated Duration @
.020" Tappet Lift
4176
4178
4180
4181
4182
4183
4184
4185
4186
280
284
288
290
292
294
296
298
300
Duration in
Degrees
@ .050
250
254
258
260
262
264
266
268
270
@ .200
175
178
182
184
186
188
190
192
194
Lobe
Lift
.425
.425
.430
.430
.430
.430
.435
.435
.435
Tappet Lift
@ TDC
106°
.118
.127
.136
.140
.144
.149
.153
.158
.162
110°
.101
.110
.118
.122
.127
.131
.135
.140
.144
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.638
.638
.645
.645
.645
.645
.653
.653
.653
1.6
.680
.680
.688
.688
.688
.688
.696
.696
.696
1.7
.723
.723
.731
.731
.731
.731
.740
.740
.740
TK ROLLERS The TK Series is our most aggressive standard rocker ratio series to date. These designs get from .020" to .050" tappet
lift and back from .050" to .020" tappet lift in only 28°. That quickness makes this series the most intense roller profiles
COMP® has ever released, providing more duration at .200" and more area than comparable profiles. Excellent for all out
Sprint Car and Late Model applications. Please consult with a COMP Cam® CAM HELP® technician or one of our Engine
Builder salesmen for proper component selection.
Camshaft Type Lobe #
TK
Rated Duration @
.020" Tappet Lift
4639
4640
4641
4642
4643
4609
4610
4611
4612
4613
Rated
Duration
TK258
TK262
TK266
TK270
TK274
TK277
TK279
TK281
TK283
TK285
Duration in
Degrees
@ .050
230
234
238
242
246
249
251
253
255
257
@ .200
156
160
164
168
172
175
177
179
180
182
Lobe
Lift
.405
.410
.415
.420
.425
.430
.430
.430
.430
.430
Tappet Lift
@ TDC
106°
.078
.085
.093
.101
.109
.118
.122
.127
.131
.135
110°
.064
.071
.078
.085
.093
.101
.105
.109
.114
.118
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.608
.615
.623
.630
.638
.645
.645
.645
.645
.645
1.6
.648
.656
.664
.672
.680
.688
.688
.688
.688
.688
1.7
.689
.697
.706
.714
.723
.731
.731
.731
.731
.731
continued on page 67
66
1 • 8 0 0 • 9 9 9 • 0 8 5 3
SOLID ROLLER
Camshaft Type Lobe #
TK
Rated Duration @
.020" Tappet Lift
TK
Rated Duration @
.020" Tappet Lift
Rated
Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
4614
4572
4615
4573
4616
4574
4617
4575
4618
TK287
TK289-420
TK289
TK291-420
TK291
TK293-420
TK293
TK295-420
TK295
@ .050
259
261
261
263
263
265
265
267
267
@ .200
184
184
186
186
188
188
190
190
191
.430
.420
.430
.420
.430
.420
.430
.420
.430
106°
.140
.147
.144
.149
.149
.151
.153
.155
.157
110°
.122
.129
.126
.131
.131
.134
.135
.138
.140
1.5
.645
.630
.645
.630
.645
.630
.645
.630
.645
1.6
.688
.672
.688
.672
.688
.672
.688
.672
.688
1.7
.731
.714
.731
.714
.731
.714
.731
.714
.731
4576
4619
4620
4621
4622
4623
4624
4625
4627
4628
TK297-420
TK297
TK299
TK301
TK303
TK305
TK307
TK309
TK311
TK313
@ .050
269
269
271
273
275
277
279
281
283
285
@ .200
191
193
195
197
199
201
202
204
206
208
.420
.430
.430
.430
.430
.430
.430
.430
.430
.430
106°
.159
.162
.166
.170
.174
.178
.183
.187
.191
.195
110°
.142
.144
.148
.154
.157
.161
.165
.169
.173
.178
1.7
.630
.645
.645
.645
.645
.645
.645
.645
.645
.645
1.8
.672
.688
.688
.688
.688
.688
.688
.688
.688
.688
1.9
.714
.731
.731
.731
.731
.731
.731
.731
.731
.731
SOLID ROLLER
TK ROLLERS cont.
1528
273
245
172
.455
.109
.093
.683
.728
.774
1530
277
249
176
.455
.118
.101
.683
.728
.774
TK - .455"
1532
281
253
179
.455
.127
.109
.683
.728
.774
Rated Duration @ 1534
285
257
183
.455
.135
.118
.683
.728
.774
.020" Tappet Lift
289
261
187
.455
.144
.126
.683
.728
.774
1.948" or Larger 1536
1538
293
265
190
.455
.153
.135
.683
.728
.774
Journals Only
1540
297
269
194
.455
.162
.144
.683
.728
.774
1542
301
273
198
.455
.170
.154
.683
.728
.774
SP-TK HIGH LIFT ROLLERS
These higher lift designs are based on the TK .455" Series Rollers but have faster opening side velocities and more lobe
lift. For use with 1.948" or larger journals only.
Rated
Camshaft Type Lobe # Duration
SP-TK High Lift
Rated Duration @
.020" Tappet Lift
1.948" or Larger
Journals Only
1519
1520
1521
1522
1523
1524
276
280
284
288
292
296
Duration in
Degrees
@ .050
248
252
256
260
264
268
@ .200
175
179
183
187
190
194
Lobe
Lift
.470
.470
.470
.470
.470
.470
Tappet Lift
@ TDC
106°
.114
.123
.131
.140
.149
.158
110°
.097
.105
.113
.122
.131
.140
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.705
.705
.705
.705
.705
.705
W W W . C O M P C A M S . C O M
1.6
.752
.752
.752
.752
.752
.752
1.7
.799
.799
.799
.799
.799
.799
67
SOLID ROLLER
SOLID ROLLER
TK LIFT RULE ROLLERS
These low lift designs are based on the TK series rollers and are specifically designed for lift rule applications such as RevOil Pro Cup. Typically they will be used with 1.8:1 ratios.
Rated
Camshaft Type Lobe # Duration
TK Lift Rule .347"
Rated Duration @
.020" Tappet Lift
1416
1417
1418
1419
4421
4422
4423
4424
1427
1429
263
267
271
275
279
283
287
291
295
299
Duration in
Degrees
@ .050
235
239
243
247
251
255
259
263
267
271
@ .200
154
158
161
165
168
171
174
177
180
184
Lobe
Lift
.347
.347
.347
.347
.347
.347
.347
.347
.347
.347
Tappet Lift
@ TDC
106°
.089
.096
.104
.111
.119
.126
.134
.141
.147
.154
110°
.074
.081
.089
.096
.104
.111
.118
.126
.133
.140
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.75
.607
.607
.607
.607
.607
.607
.607
.607
.607
.607
1.8
.625
.625
.625
.625
.625
.625
.625
.625
.625
.625
1.85
.642
.642
.642
.642
.642
.642
.642
.642
.642
.642
SPL ROLLERS
The SPL Rollers are very similar to the TK family but have special ramps designed to be used with looser lash values. These
lobes are designed for hot lash settings in the .022" to .028" range. Otherwise, they should perform as well as the TK family
in high torque applications that respond well to aggressive lobe profiles.
Rated
Camshaft Type Lobe # Duration
SPL
Rated Duration @
.020" Tappet Lift
2906
2907
2908
2909
291
295
299
303
Duration in
Degrees
@ .050
260
264
268
272
@ .200
184
188
192
195
Lobe
Lift
.435
.435
.435
.435
Tappet Lift
@ TDC
106°
.137
.146
.154
.163
110°
.120
.128
.137
.145
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.6
.696
.696
.696
.696
1.7
.740
.740
.740
.740
1.8
.783
.783
.783
.783
VK LIFT RULE ROLLERS
These low lift designs are similar to the low lift TKs but optimized with quicker ramps for the lower lobe lift. Designed for lift
rule solid roller applications including revised NMRA specs.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
2688
276
249
161
.323
.112
.098
2689
280
253
164
.323
.119
.105
VK Lift Rule .323"
284
257
167
.323
.126
.112
Rated Duration @ 2690
.020" Tappet Lift 2691
288
261
171
.323
.133
.119
2692
292
265
174
.323
.140
.126
2693
296
269
178
.323
.147
.133
2694
300
273
181
.323
.153
.139
68
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.55
.501
.501
.501
.501
.501
.501
.501
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.6
.517
.517
.517
.517
.517
.517
.517
1.65
.533
.533
.533
.533
.533
.533
.533
SOLID ROLLER
The DSZ Rollers are tight lash designs based on our high lift DSP and DSS series but optimized with quicker ramps for shorter
duration applications. These lobes have shorter seat timing than even the TK series. DSZ Rollers provide great torque and power
in limited engine speed or limited ratio applications. DSZ profiles are also very good with limited travel hydraulic roller lifters if noise
is not a primary concern. Rated
Camshaft Type Lobe # Duration
DSZ Series
Rated Duration @
.020" Tappet Lift
Journal = B, F,
R, M
12500
12502
12504
12506
12508
12510
12522
12524
DSZ H Series
Rated Duration @ 12526
.020" Tappet Lift 12527
Journal = F, R, M 12528
12530
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratioo
@ .020
267
271
275
279
283
287
@ .050
240
244
248
252
256
260
@ .200
166
170
174
177
181
185
.394
.398
.402
.406
.410
.414
106°
.098
.106
.115
.123
.132
.141
110°
.083
.090
.098
.106
.115
.123
1.5
.591
.597
.603
.609
.615
.621
1.6
.630
.637
.643
.650
.656
.662
1.7
.670
.677
.683
.690
.697
.704
271
275
279
281
283
287
244
248
252
254
256
260
170
174
178
180
182
186
.415
.419
.423
.425
.427
.431
.106
.115
.124
.128
.132
.141
.090
.098
.106
.111
.115
.124
.623
.629
.635
.638
.641
.647
.664
.670
.677
.680
.683
.690
.706
.712
.719
.723
.726
.733
SOLID ROLLER
DSZ ROLLERS
CSZ ROLLERS
The CSZ Rollers are "tweaked" versions of the DSZ profiles for use in standard journal Small Block Chevy applications and higher
lift Big Block Chevy or 50mm. These are not quite as quick as the DSZ profiles, and they give up a little area and stability compared
to the larger journal versions. However, this as close to a DSZ as you can get with a smaller journal. Also good for hydraulic rollers
if noise is not a primary concern.
Rated
Camshaft Type Lobe # Duration
@ .200
133
147
165
169
173
177
181
185
Tappet Lift
@ TDC
1.6
.520
.557
.630
.637
.643
.650
.656
.662
1.7
.553
.592
.670
.677
.683
.690
.697
.704
12564
256
228
154
.399
.075
.061
12566
260
232
158
.403
.082
.068
12568
264
236
162
.407
.090
.075
CSZ H
12570
268
240
166
.411
.098
.082
Rated Duration @
12572
272
244
170
.415
.106
.090
.020" Tappet Lift
12574
276
248
174
.419
.114
.098
Journal = S, B
12576
280
252
178
.423
.123
.106
12578
284
256
182
.427
.132
.114
12580
288
260
186
.431
.141
.123
.599
.605
.611
.617
.623
.629
.635
.641
.647
.638
.645
.651
.658
.664
.670
.677
.683
.690
.678
.685
.692
.699
.706
.712
.719
.726
.733
.325
.348
.394
.398
.402
.406
.410
.414
106°
.049
.068
.098
.106
.114
.123
.132
.140
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.488
.522
.591
.597
.603
.609
.615
.621
CSZ
Rated Duration @
.020" Tappet Lift
Journal = S
@ .050
212
224
240
244
248
252
256
260
Lobe
Lift
110°
.039
.055
.082
.090
.098
.106
.114
.123
12540
12543
12550
12552
12554
12556
12558
12560
@ .020
240
252
268
272
276
280
284
288
Duration in
Degrees
W W W . C O M P C A M S . C O M
69
SOLID ROLLER
SOLID ROLLER
HI-TECH™ .440" INTAKE ROLLERS
These lobes are to be used in medium to large cubic inch engines. The Hi-Tech™ .440" are designed with ported cylinder
heads in mind and are easy on springs. These designs are very stable at high engine speeds.
Rated
Camshaft Type Lobe # Duration
Hi-Tech™
.440" Int.
Rated Duration @
.020" Tappet Lift
3207
4076
4119
4077
4078
4079
4080
4081
4082
296-16
301-6
303-6
305-6
309-6
313-6
317-6
321-6
325-6
Duration in
Degrees
@ .050
260
264
266
268
272
276
280
284
287
@ .200
178
181
183
184
187
189
192
195
198
Lobe
Lift
.440
.440
.440
.440
.440
.440
.440
.440
.440
Tappet Lift
@ TDC
106°
.132
.141
.144
.147
.153
.157
.161
.168
.173
110°
.116
.125
.129
.132
.137
.142
.146
.153
.158
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.660
.660
.660
.660
.660
.660
.660
.660
.660
1.6
.704
.704
.704
.704
.704
.704
.704
.704
.704
HIGH TORQUE .440" ROLLERS
1.7
.748
.748
.748
.748
.748
.748
.748
.748
.748
These designs are very aggressive and can be used with a variety of rocker ratios. Smaller designs work well in oval track
motors and larger designs work in drag racing applications. The High Torque .440" designs are stable to 8200+ RPM.
Rated
Camshaft Type Lobe # Duration
High Torque
.440"
Rated Duration @
.020" Tappet Lift
4217
4216
4240
4241
4243
4245
4252
4253
4213
4214
4254
278-8
280-8
284-8
288-8
292-8
296-8
300-8
304-8
308-8
312-8
316-8
Duration in
Degrees
@ .050
250
252
256
260
264
268
272
276
280
284
288
@ .200
174
176
178
182
186
190
194
197
201
205
210
Lobe
Lift
.440
.440
.440
.440
.440
.440
.440
.440
.440
.440
.440
Tappet Lift
@ TDC
106°
.115
.119
.122
.131
.140
.149
.157
.177
.185
.191
.198
110°
.099
.102
.105
.114
.123
.131
.139
.160
.167
.174
.180
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.660
.660
.660
.660
.660
.660
.660
.660
.660
.660
.660
1.6
.704
.704
.704
.704
.704
.704
.704
.704
.704
.704
.704
1.7
.748
.748
.748
.748
.748
.748
.748
.748
.748
.748
.748
HIGH TORQUE .460" ROLLERS
The High Torque .460" are primarily used in drag racing applications with or without ported heads. They are less aggressive than the High Torque .440" designs.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
High Torque
1393
319-7
285
200
.460
.180
.163
.460"
Rated Duration @ 4075
323-7
287
202
.460
.185
.169
.020" Tappet Lift 1395
327-7
290
205
.460
.192
.176
70
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.690
.690
.690
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.6
.736
.736
.736
1.7
.782
.782
.782
SOLID ROLLER
The High Torque .420" Exhaust is primarily used in drag racing applications with or without ported heads and can be used
with a variety of rocker ratios.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.5
1.6
1.7
1660
307-4
275
192
.420
.165
.152
.630
.672
.714
High Torque
.420" Exh.
1480
311-4
279
194
.420
.173
.156
.630
.672
.714
Rated Duration @ 4070
317-2
283
197
.420
.172
.156
.630
.672
.714
.020" Tappet Lift 4065
323-6
288
200
.420
.177
.161
.630
.672
.714
SOLID ROLLER
HIGH TORQUE .420" EXHAUST ROLLERS
HIGH RATIO − HIGH RPM SUPER STOCK ROLLERS
These profiles are designed to increase high RPM performance in NHRA Super Stock applications when coupled with a
1.8:1 to 2.0:1 rocker arm. Optimized for the higher RPM capability of the latest Super Stock cylinder heads.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.8
1.9
2.0
4480
298
266
182
.414
.136
.119
.745
.787
.828
302
270
186
.414
.143
.127
.745
.787
.828
High Ratio - High 4482
RPM Super Stock 4483
304
272
188
.414
.147
.131
.745
.787
.828
Rated Duration @ 4484
306
274
189
.414
.151
.135
.745
.787
.828
.020" Tappet Lift 4485
308
276
191
.416
.155
.139
.749
.790
.832
4486
310
278
193
.418
.160
.143
.752
.794
.836
HXL ROLLERS
The HXL Rollers are intended for high lift applications that require maximum torque and extended RPM. These fall
somewhere in between the RX and TK Series in terms of aggressiveness but provide more lobe lift. They are closest
to the High Torque .440" lobes but have incorporated our latest profile advancements that should allow higher engine
speeds and improved dynamics.
Rated
Camshaft Type Lobe # Duration
HXL
Rated Duration @
.020" Tappet Lift
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
281
283
285
287
289
291
293
295
297
299
301
303
305
307
309
311
Duration in
Degrees
@ .050
252
254
256
258
260
262
264
266
268
270
272
274
276
278
280
282
@ .200
175
177
179
181
183
185
187
189
191
193
195
197
199
201
202
204
Lobe
Lift
.434
.436
.438
.440
.442
.444
.446
.448
.450
.452
.454
.454
.454
.454
.454
.454
Tappet Lift
@ TDC
106°
.118
.122
.126
.130
.135
.139
.144
.148
.152
.157
.161
.166
.170
.174
.178
.183
110°
.102
.106
.110
.114
.118
.122
.126
.130
.135
.139
.143
.148
.152
.156
.161
.165
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.6
.694
.698
.701
.704
.707
.710
.714
.717
.720
.723
.726
.726
.726
.726
.726
.726
W W W . C O M P C A M S . C O M
1.7
1.8
.738
.781
.741
.785
.745
.788
.748
.792
.751
.796
.755
.799
.758
.803
.762
.806
.765
.810
.768
.814
.772
.817
.772
.817
.772
.817
.772
.817
.772
.817
.772
.817
continued on page 72
71
SOLID ROLLER
SOLID ROLLER
HXL ROLLERS cont.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
2208
313
284
206
.454
.187
.169
2209
315
286
208
.454
.191
.173
2210
317
288
210
.454
.195
.177
HXL
Rated Duration @
.020" Tappet Lift
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.6
.726
.726
.726
1.7
.772
.772
.772
1.8
.817
.817
.817
HXX ROLLERS
The HXX Rollers are exhaust optimized versions of our popular HXL Intake lobes.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.5
1.6
1.7
12404
286
256
179
.445
.126
.110
.668
.712
.757
12406
290
260
183
.445
.135
.118
.668
.712
.757
12198
294
264
187
.445
.143
.126
.668
.712
.757
12199
296
266
189
.445
.147
.130
.668
.712
.757
12200
298
268
191
.445
.152
.134
.668
.712
.757
HXX
300
270
193
.445
.156
.139
.668
.712
.757
Rated Duration @ 12201
.020" Tappet Lift 12202
302
272
194
.445
.161
.143
.668
.712
.757
12203
304
274
196
.445
.165
.147
.668
.712
.757
12204
306
276
198
.445
.169
.152
.668
.712
.757
12205
308
278
200
.445
.174
.156
.668
.712
.757
12206
310
280
202
.445
.178
.161
.668
.712
.757
12207
312
282
204
.445
.183
.165
.668
.712
.757
12208
314
284
206
.445
.187
.169
.668
.712
.757
HXX HL ROLLERS
Higher lift versions on the HXX lobes.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
HXX HL
@ .050
@ .200
106°
110°
1.5
1.6
1.7
Rated Duration @
299
269
193
.469
.155
.137
.704
.750
.797
.020" Tappet Lift 12410
HPX ROLLERS
The HPX Rollers are higher lift, more aggressive versions of the HXX lobes for use in larger journal applications. These also
work well with less rocker ratio and can be used on the intake or exhaust. Rated
Camshaft Type Lobe # Duration
HPX
12185
Rated Duration @
12188
.020” Tappet Lift
12190
12192
72
292
296
300
304
Duration in
Degrees
@ .050
264
268
272
276
@ .200
191
195
199
203
Lobe
Lift
.475
.479
.483
.487
Tappet Lift
@ TDC
106°
.150
.159
.169
.179
110°
.131
.140
.150
.159
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.713
.719
.725
.731
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.6
1.7
.760
.808
.766
.814
.773
.821
.779
.828
continued on page 73
SOLID ROLLER
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.5
12194
308
280
207
.491
.189
.169
.737
HPX
Rated Duration @ 12196
312
284
211
.495
.199
.179
.743
.020” Tappet Lift 12230
316
288
215
.495
.208
.188
.743
12232
320
292
219
.495
.218
.198
.743
12234
324
296
223
.495
.227
.207
.743
1.6
.786
.792
.792
.792
.792
1.7
.835
.842
.842
.842
.842
SOLID ROLLER
HPX ROLLERS cont.
HXX LL ROLLERS
These are softer ramp designs like the HXL designs but with lower lift. Work well for AL block applications with higher
ratios or anywhere as an exhaust lobe.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.6
1.7
HXX LL
Rated Duration @ 12050
292
262
180
.390
.135
.119
.585
.663
.020" Tappet Lift 12052
296
266
184
.392
.143
.127
.588
.666
12054
300
270
188
.394
.151
.134
.591
.670
1.8
.702
.706
.709
IXL ROLLERS
The IXL Series is very similar to the HXL but is optimized for higher rocker ratios. This family also incorporates a design
characteristic which should improve stability at very high RPM. These are quicker off the seat than the RX profiles, but the
IXL nose shape will provide better stability with high ratios.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
12129
275
245
163
.400
.102
.088
12131
279
249
167
.404
.110
.095
12133
283
253
171
.408
.117
.102
2535
287
257
175
.412
.125
.110
2536
289
259
177
.414
.129
.113
IXL
291
261
179
.416
.133
.117
Rated Duration @ 2537
.020" Tappet Lift 2538
293
263
181
.418
.136
.121
2539
295
265
182
.420
.140
.125
2540
297
267
184
.422
.144
.128
2541
299
269
186
.424
.148
.132
2542
301
271
188
.426
.152
.136
2543
303
273
190
.428
.156
.140
2544
305
275
192
.430
.160
.144
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
.680
.687
.694
.700
.704
.707
.711
.714
.717
.721
.724
.728
.731
W W W . C O M P C A M S . C O M
1.8
.720
.727
.734
.742
.745
.749
.752
.756
.760
.763
.767
.770
.774
1.9
.760
.768
.775
.783
.787
.790
.794
.798
.802
.806
.809
.813
.817
73
SOLID ROLLER
SOLID ROLLER
IXLL ROLLERS
Rated
Camshaft Type Lobe # Duration
IXLL
14502
Rated Duration @
14504
.020" Tappet Lift
14506
14508
282
286
291
295
Duration in
Degrees
@ .050
252
256
260
264
@ .200
167
171
175
179
Lobe
Lift
.387
.389
.391
.393
Tappet Lift
@ TDC
106°
.114
.122
.129
.137
110°
.100
.107
.114
.122
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.8
.697
.700
.704
.707
1.9
.735
.739
.743
.747
2.0
.774
.778
.782
.786
UB ROLLERS
The UB Series Rollers are based on some of our most popular high RPM, NASCAR-style .875" flat tappet designs but are
optimized to take advantage of the additional tappet velocity allowed with roller lifters. These are quicker off the seat than the
HXL Series but have slightly less high lift area. Performance will be similar to the HXL, but certain port designs and valve train
systems will have a clear preference.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
1.7
.758
.760
.762
.763
.765
.767
.768
.770
.772
.774
.775
.777
.779
.780
1.8
.803
.805
.806
.808
.810
.812
.814
.815
.817
.819
.821
.823
.824
.826
@ .050
@ .200
106°
110°
2265
285
255
176
.423
.122
.106
2267
287
257
178
.424
.126
.110
2273
289
259
179
.425
.130
.114
2274
291
261
181
.426
.134
.118
2275
293
263
183
.427
.138
.122
UB
295
265
185
.428
.142
.126
Rated Duration @ 2276
.020" Tappet Lift 2277
297
267
187
.430
.146
.130
2278
299
269
189
.432
.150
.134
2279
301
271
191
.434
.155
.138
2280
303
273
193
.436
.159
.142
2281
305
275
195
.438
.163
.146
1.7
.719
.721
.723
.724
.726
.728
.731
.734
.738
.741
.745
1.8
.761
.763
.765
.767
.769
.770
.774
.778
.781
.785
.788
1.9
.804
.806
.808
.809
.811
.813
.817
.821
.825
.828
.832
UB
Rated Duration @
.020" Tappet Lift
74
.446
.447
.448
.449
.450
.451
.452
.453
.454
.455
.456
.457
.458
.459
106°
.126
.130
.135
.139
.143
.147
.152
.156
.160
.164
.168
.172
.177
.181
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.6
.714
.715
.717
.718
.720
.722
.723
.725
.726
.728
.730
.731
.733
.734
287
289
291
293
295
297
299
301
303
305
307
309
311
313
@ .200
179
181
183
185
186
188
190
192
194
196
198
200
202
204
Tappet Lift
@ TDC
110°
.110
.114
.118
.122
.128
.130
.135
.139
.143
.147
.151
.155
.159
.164
2214
2215
2246
2247
2238
2239
2240
2241
2242
2243
2244
2245
2380
2381
@ .050
257
259
261
263
265
267
269
271
273
275
277
279
281
283
Lobe
Lift
1 • 8 0 0 • 9 9 9 • 0 8 5 3
SOLID ROLLER
The UBL Rollers are based on the UB Roller designs but are faster off the seat for improved performance in limited engine
speed and lower lobe lift applications.
Rated
Camshaft Type Lobe # Duration
UBL
Rated Duration @
.020" Tappet Lift
2195
2196
2198
2199
283
287
295
299
Duration in
Degrees
@ .050
254
258
266
270
@ .200
174
179
185
189
Lobe
Lift
.410
.410
.410
.410
Tappet Lift
@ TDC
106°
.120
.128
.144
.152
110°
.105
.113
.128
.136
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.6
.656
.656
.656
.656
1.7
.697
.697
.697
.697
1.8
.738
.738
.738
.738
SOLID ROLLER
UBL ROLLERS
UBA ROLLERS
The UBA Rollers are based on the UB Roller designs but are faster off the seat for improved performance in limited
engine speed applications.
Rated
Camshaft Type Lobe # Duration
UBA
Rated Duration @
.020" Tappet Lift
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
285
287
289
291
293
295
297
299
301
303
305
Duration in
Degrees
@ .050
256
258
260
262
264
266
268
270
272
274
276
@ .200
179
181
183
185
187
189
191
193
195
197
199
Lobe
Lift
.444
.446
.448
.450
.452
.454
.456
.458
.460
.462
.464
Tappet Lift
@ TDC
106°
.126
.131
.135
.139
.144
.148
.153
.157
.161
.166
.170
110°
.110
.114
.118
.122
.126
.131
.135
.139
.144
.148
.152
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.6
.710
.714
.717
.720
.723
.726
.730
.733
.736
.739
.742
1.7
.755
.758
.762
.765
.768
.772
.775
.779
.782
.785
.789
1.8
.799
.803
.806
.810
.814
.817
.821
.824
.828
.832
.835
UBLL ROLLERS
The UBLL Rollers are based on the UB Roller designs but are faster off the seat for improved performance in limited engine
speed and lower lobe lift applications.
Rated
Camshaft Type Lobe # Duration
UBLL
Rated Duration @
.020" Tappet Lift
2201
2202
2203
289
291
293
Duration in
Degrees
@ .050
260
262
264
@ .200
177
179
181
Lobe
Lift
.389
.390
.391
Tappet Lift
@ TDC
106°
.131
.135
.139
110°
.116
.119
.123
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.9
.739
.741
.743
W W W . C O M P C A M S . C O M
2.0
.778
.780
.782
2.1
.817
.819
.821
75
SOLID ROLLER
SOLID ROLLER
DIX ROLLERS
The DIX Series is similar to the RX but with substantially more area under the curve.
Rated
Camshaft Type Lobe # Duration
DIX
Rated Duration @ 12100
.020" Tappet Lift 12102
12103
304
306
308
Duration in
Degrees
@ .050
274
276
278
@ .200
196
198
200
Lobe
Lift
.439
.439
.439
Tappet Lift
@ TDC
106°
.165
.169
.173
110°
.147
.151
.155
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.6
.702
.702
.702
1.7
.746
.746
.746
1.8
.790
.790
.790
GCI & GCX ROLLERS
The GCI and GCX lobes have a bit more ramp than some of the other modern profiles but have excellent area.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
GCX
2571
299
272
195
.461
.163
.145
.692
.738
Rated Duration @
303
276
199
.465
.172
.154
.698
.744
.020" Tappet Lift 2591
.784
294
296
298
.457
.459
.461
106°
.147
.152
.156
110°
.130
.134
.139
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
.777
.780
.784
2570
2582
2583
@ .200
189
191
193
Tappet Lift
@ TDC
1.6
.731
.734
.738
GCI
Rated Duration @
.020" Tappet Lift
@ .050
265
267
269
Lobe
Lift
1.5
.686
.689
.692
.791
ULG UVX HIGH RATIO ROLLERS
The ULG and UVX are smoother than the UBLL for even higher rocker ratios, especially for converting older NASCAR Cup
engines with very high ratios over to roller cams.
Rated
Camshaft Type Lobe # Duration
14004
ULG
14006
Rated Duration @
.020" Tappet Lift 14008
@ .020
282
286
290
Duration in
Degrees
@ .050
252
256
260
@ .200
167
171
175
Lobe
Lift
.388
.388
.388
Tappet Lift
@ TDC
106°
.114
.122
.129
110°
.100
.107
.114
UVX
Rated Duration @ 14013
304
272
183
.388
.145
.131
.020" Tappet Lift
76
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
2.1
.815
.815
.815
2.2
.854
.854
.854
2.3
.892
.892
.892
.815
.854
.892
1 • 8 0 0 • 9 9 9 • 0 8 5 3
SOLID ROLLER
The DSP Rollers fit nicely between the UBA and DSS families. These profiles work great either in lower ratio, high RPM
applications or in lower engine speed applications where you can use a faster lobe. Rated
Camshaft Type Lobe # Duration
DSP
Rated Duration @
.020" Tappet Lift
12172
12174
12176
12177
12178
12180
12181
12182
283
287
291
293
295
299
301
303
Duration in
Degrees
@ .050
254
258
262
264
266
270
272
274
@ .200
179
183
187
189
191
195
197
199
Lobe
Lift
.465
.467
.469
.470
.471
.473
.474
.475
Tappet Lift
@ TDC
106°
.124
.133
.142
.146
.151
.160
.165
.169
110°
.107
.115
.124
.128
.133
.142
.146
.151
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.6
.744
.747
.750
.752
.754
.757
.758
.760
1.7
.791
.794
.797
.799
.801
.804
.806
.808
1.8
.837
.841
.844
.846
.848
.851
.853
.855
SOLID ROLLER
DSP ROLLERS
DSS ROLLERS
The DSS Rollers are based off the best aspects of the HXL and DR Series. These work very well in high torque applications that
can take advantage of an aggressive high lobe lift design. The DSS series is a very good choice for applications where valve motion similar to that of an aggressive high ratio lobe is desired without going with an extreme rocker ratio. Available for 1.948"
and larger journal sizes but cannot be ground on standard journal Small Block Chevy or small base circle cores.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
2531
284
256
183
.474
.130
.113
2545
286
258
185
.475
.135
.117
2551
288
260
187
.476
.139
.121
2555
299
262
189
.477
.143
.125
2557
292
264
191
.478
.148
.130
2559
294
266
192
.479
.153
.134
DSS
2560
296
268
194
.480
.157
.139
Rated Duration @
2521
298
270
196
.481
.162
.143
.020" Tappet Lift
2522
300
272
198
.482
.166
.148
2523
302
274
200
.483
.171
.152
2524
304
276
202
.484
.176
.157
2525
306
278
204
.485
.180
.161
2526
308
280
206
.486
.185
.166
2527
310
282
208
.487
.189
.170
2528
312
284
210
.488
.194
.175
2529
314
286
212
.489
.199
.180
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.711
.713
.714
.716
.717
.719
.720
.722
.723
.725
.726
.728
.729
.731
.732
.734
W W W . C O M P C A M S . C O M
1.6
.758
.760
.762
.763
.765
.766
.768
.770
.771
.773
.774
.776
.778
.779
.781
.782
1.7
.806
.808
.809
.811
.813
.814
.816
.818
.819
.821
.823
.825
.826
.828
.830
.831
77
SOLID ROLLER
SOLID ROLLER
DSL ROLLERS
The DSL Rollers are based off the DSP and DSS Series but with increased lobe lift. The DSL Series is a very good choice for
applications where valve motion similar to that of an aggressive high ratio lobe is desired without going with a high ratio.
Available for 55mm/2.165" and larger journal sizes but cannot be ground on standard journal Big Block Chevy, Small
Block Chevy or small base circle cores.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.5
1.6
1.7
12374
286
258
185
.502
.135
.117
.753
.803
.853
DSL
12376
290
262
189
.506
.144
.126
.759
.810
.860
Rated Duration @
12378
294
266
193
.510
.154
.135
.765
.816
.867
.020" Tappet Lift
12380
298
270
197
.514
.163
.144
.771
.822
.874
12382
300
274
201
.518
.173
.154
.777
.829
.881
12384
302
278
205
.522
.183
.163
.783
.835
.887
DPC & DPD ROLLERS
The DPD lobes are for 2.125", 55mm or larger journals and are slightly quicker than the aggressive DSS Series. The DPC can
be used on smaller journals and give approximately the same valve motion when used with about +0.15 more rocker ratio.
Rated
Camshaft Type Lobe # Duration
12648
DPC
12649
Rated Duration @
.020" Tappet Lift 12650
12652
12654
278
280
282
286
290
Duration in
Degrees
@ .050
249
251
253
257
261
@ .200
174
176
177
182
185
Lobe
Lift
.440
.440
.440
.440
.440
Tappet Lift
@ TDC
106°
.114
.118
.122
.131
.140
110°
.098
.102
.106
.114
.122
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
.748
.748
.748
.748
.748
1.8
.792
.792
.792
.792
.792
1.9
.836
.836
.836
.836
.836
@ .050
@ .200
106°
110°
1.65
1.75
1.85
12748
280
252
181
.4777
.124
.106
.788
.836
.884
12749
282
254
183
.4777
.128
.110
.788
.836
.884
DPD
Rated Duration @ 12750
284
256
185
.4777
.133
.115
.788
.836
.884
.020" Tappet Lift 12751
286
258
187
.4777
.137
.119
.788
.836
.884
12752
288
260
188
.4777
.142
.124
.788
.836
.884
12753
290
262
190
.4777
.147
.128
.788
.836
.884
12754
292
264
192
.4777
.152
.133
.788
.836
.884
HOI & HOX ROLLERS
The HOI design is like the UBA but faster without the lobe lift of the DSS. The HOX fits in between the HPX and HXX series in
terms of lift but is almost as aggressive as the high lift HPX family. These work very well with either lower ratios or with less
extreme engine speed. Rated
Camshaft Type Lobe # Duration
12907
HOI
12908
Rated Duration @
.020" Tappet Lift 12909
12910
12604
12664
78
286
288
290
292
294
290
Duration in
Degrees
@ .050
259
261
263
265
267
263
@ .200
186
188
190
192
194
189
Lobe
Lift
.465
.465
.465
.465
.465
.448
Tappet Lift
@ TDC
106°
.138
.143
.147
.152
.157
.146
110°
.120
.125
.129
.133
.138
.128
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio Ratio
1.5
.698
.698
.698
.698
.698
.672
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.6
1.7
.744
.791
.744
.791
.744
.791
.744
.791
.744
.791
.717
.762
continued on page 79
SOLID ROLLER
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
12322
297
269
194
.452
.159
.140
12324
301
273
198
.452
.168
.149
12303
301
273
199
.465
.169
.150
HOX
Rated Duration @ 12304
303
275
201
.465
.173
.155
.020" Tappet Lift 12305
305
277
203
.465
.175
.159
12306
307
279
205
.465
.182
.164
12307
309
281
206
.465
.187
.169
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio Ratio
1.5
.678
.678
.698
.698
.698
.698
.698
1.6
.723
.723
.744
.744
.744
.744
.744
1.7
.768
.768
.791
.791
.791
.791
.791
SOLID ROLLER
HOI & HOX ROLLERS cont.
UL ROLLERS
The UL Roller lobes are extremely aggressive roller lobes for 55mm+ journal sizes, .850" roller wheels and lower rocker
ratios. Best for use in either applications like Super Stock class racing when component life may be 2-4 passes or limited
engine speed applications. These are not for the faint of heart. Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
11918
295
269
205
.545
.178
11919
297
271
206
.545
.184
UL
299
273
208
.545
.190
Rated Duration @ 11920
.020" Tappet Lift 11922
303
277
212
.545
.201
11924
307
281
216
.545
.213
11926
311
285
220
.545
.224
11928
315
289
224
.545
.235
110°
.156
.161
.167
.178
.190
.201
.212
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.818
.818
.818
.818
.818
.818
.818
1.6
.872
.872
.872
.872
.872
.872
.872
1.7
.927
.927
.927
.927
.927
.927
.927
HIGH RPM INTAKE ROLLERS
The High RPM Intake Roller is used on highly modified, high RPM drag race motors. They are used primarily with ported
heads that incorporate lightweight valves and high spring loads.
Rated
Camshaft Type Lobe # Duration
High RPM Int.
Rated Duration @
.020" Tappet Lift
1301
1309
1302
1030
1046
4107
4068
4085
4091
4063
1490
4118
318-6
324-7
324-6
324-30
326-30
328-6
328-5
328-11
330-10
332-7
332-6
336-4
Duration in
Degrees
@ .050
278
284
284
288
293
288
288
288
287
292
292
296
@ .200
195
198
200
207
211
201
203
203
203
204
206
209
Lobe
Lift
.465
.456
.471
.510
.510
.456
.476
.483
.480
.456
.476
.476
Tappet Lift
@ TDC
106°
.161
.171
.172
.188
.198
.177
.180
.179
.180
.184
.188
.195
110°
.144
.154
.155
.171
.180
.161
.163
.162
.163
.167
.171
.178
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.698
.684
.706
.765
.765
.684
.714
.724
.720
.684
.714
.714
W W W . C O M P C A M S . C O M
1.6
.744
.730
.753
.816
.816
.730
.761
.773
.768
.730
.761
.761
1.7
.791
.775
.800
.867
.867
.775
.810
.821
.816
.775
.810
.810
79
SOLID ROLLER
SOLID ROLLER
CE DRAG INTAKE ROLLERS
The CE Drag Intake Rollers are intended for very large port, high flow cylinder head applications. They work well in high RPM
ranges where Comp Eliminator and similar high RPM small displacement engines operate.
Rated
Camshaft Type Lobe # Duration
CE Drag Int.
Rated Duration @
.020" Tappet Lift
1286
1288
1295
1260
1278
1268
1271
1272
310
314
316
318
318
320
320
322
Duration in
Degrees
@ .050
274
278
280
282
282
284
284
286
@ .200
189
192
194
194
196
196
198
198
Lobe
Lift
.484
.484
.484
.474
.484
.476
.484
.478
Tappet Lift
@ TDC
106°
.154
.162
.166
.160
.170
.165
.174
.169
110°
.138
.146
.150
.144
.153
.148
.157
.152
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.6
.774
.774
.774
.758
.774
.762
.774
.765
1.7
.823
.823
.823
.806
.823
.809
.823
.813
1.8
.871
.871
.871
.853
.871
.857
.871
.860
DASH 31 ROLLERS
The Dash 31 Rollers are a more aggressive cousin of the original -30 lobes popular in Pro Stock in the early 90s. These
have been used successfully in Pro Stock but are preferred for use in applications operating below 9000 RPM. These
profiles result in excellent torque and make very good power up to the limiting speed of the valve train.
Rated
Camshaft Type Lobe # Duration
Dash 31
Rated Duration @
.020" Tappet Lift
1186
1188
1176
1180
306-31
308-31
310-31
312-31
Duration in
Degrees
@ .050
275
277
279
281
@ .200
198
200
202
204
Lobe
Lift
.520
.520
.520
.520
Tappet Lift
@ TDC
106°
.166
.171
.176
.181
110°
.147
.152
.157
.162
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.6
.832
.832
.832
.832
1.7
.884
.884
.884
.884
1.8
.936
.936
.936
.936
MOUNTAIN MOTOR ROLLERS
These are assorted intake profiles that have been developed for large cubic inch, blown and/or nitrous applications that
respond favorably to more area and are not required to run over 9000 RPM. These have been used with high rocker
ratios to result in over 1.000" valve lift in lower RPM applications.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
1027
322
292
214
.517
.206
.187
1028
326
296
218
.525
.216
.197
1240
324
294
214
.520
.201
.182
Mountain Motor
Rated Duration @
.020" Tappet Lift
80
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
.879
.893
.884
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.8
.931
.945
.936
1.9
.982
.998
.988
SOLID ROLLER
These lobes are used on the exhaust side of highly modified, high RPM race engines. The cylinder head efficiency directly
determines the design used.
Rated
Camshaft Type Lobe # Duration
High RPM Exh.
Rated Duration @
.020" Tappet Lift
4050
4067
4074
1495
4055
1484
1320
1485
4247
1487
1306
1489
4051
4064
1494
4052
4053
1152
4056
4057
319-1
322-3
326-4
328-2
330-1
330-5
332-2
334-3
336-5
338-2
340-3
342-2
342-3
344-3
344-4
344-5
348-1
352-1
356-5
360-5
Duration in
Degrees
@ .050
280
284
288
291
292
292
292
296
296
300
300
302
302
304
304
304
308
312
316
320
@ .200
185
190
194
222
196
196
203
200
205
204
208
207
210
214
211
214
217
222
227
230
Lobe
Lift
.400
.420
.420
.427
.420
.420
.440
.420
.440
.420
.440
.420
.460
.470
.440
.460
.460
.477
.480
.480
Tappet Lift
@ TDC
106°
.152
.160
.166
.181
.168
.173
.182
.179
.188
.185
.193
.192
.198
.207
.201
.207
.212
.222
.231
.238
110°
.137
.145
.151
.165
.152
.158
.166
.165
.172
.171
.177
.177
.182
.190
.185
.190
.195
.205
.214
.221
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.600
.630
.630
.640
.630
.630
.660
.630
.660
.630
.660
.630
.690
.705
.660
.690
.690
.715
.720
.720
1.6
.640
.672
.672
.683
.672
.672
.704
.672
.704
.672
.704
.672
.736
.752
.704
.736
.736
.765
.768
.768
1.7
.680
.714
.714
.725
.714
.714
.748
.714
.748
.714
.748
.714
.782
.799
.748
.782
.782
.810
.816
.816
SOLID ROLLER
HIGH RPM EXHAUST ROLLERS
JX DRAG EXHAUST ROLLERS
The JX Drag Exhaust Rollers are good complements to either the CE, REV or RX intake designs. They are intended for very
large port, high flow cylinder head applications and work well in the high RPM range where Comp Eliminator and similar
high RPM small displacement engines operate.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
1285
333
292
196
.460
.167
.152
1261
335
294
198
.446
.171
.156
1287
335
294
198
.460
.171
.156
JX Drag Exh.
Rated Duration @ 1291
337
296
200
.460
.175
.160
.020" Tappet Lift 1263
339
298
201
.446
.179
.163
1289
339
298
202
.460
.179
.163
1269
341
300
203
.448
.183
.167
1293
341
300
203
.460
.183
.167
1273
343
302
205
.450
.187
.171
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.6
.736
.714
.736
.736
.714
.736
.717
.736
.720
W W W . C O M P C A M S . C O M
1.7
.782
.758
.782
.782
.758
.782
.762
.782
.765
1.8
.828
.803
.828
.828
.803
.828
.806
.828
.810
81
SOLID ROLLER
SOLID ROLLER
XCX DRAG EXHAUST ROLLERS
The XCX Series Rollers provide state-of-the-art ramp designs with the ramp characteristics required to decrease pumping losses and allow exhaust gasses from overlap to provide a signal to accelerate the intake charge into the cylinder in
large port, drag race applications. These modern designs are very stable and respond well to rocker ratio increases.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1850
1960
1860
1962
1862
1964
1864
1966
1866
1968
1868
320
324
326
328
330
332
334
336
338
340
342
@ .050
282
286
288
290
292
294
296
298
300
302
304
@ .200
194
198
200
202
204
206
208
210
212
214
216
.460
.450
.470
.450
.470
.450
.470
.450
.470
.450
.470
106°
.162
.170
.175
.179
.183
.187
.192
.195
.200
.203
.209
110°
.146
.154
.158
.162
.166
.170
.175
.178
.183
.186
.191
1.6
.736
.720
.752
.720
.752
.720
.752
.720
.752
.720
.752
1.7
.782
.765
.799
.765
.799
.765
.799
.765
.799
.765
.799
1.8
.828
.810
.846
.810
.846
.810
.846
.810
.846
.810
.846
XCX .484 Drag
Exh.
Rated Duration @
.020" Tappet Lift
1751
1752
1753
1758
1759
1760
1761
1763
1772
1773
318
322
326
330
334
338
342
344
346
350
280
284
288
292
296
300
304
306
308
312
193
197
201
205
209
212
216
218
220
224
.484
.484
.484
.484
.484
.484
.484
.484
.484
.484
.159
.167
.175
.184
.192
.201
.210
.214
.218
.226
.142
.150
.158
.167
.175
.184
.192
.196
.200
.209
.774
.774
.774
.774
.774
.774
.774
.774
.774
.774
.823
.823
.823
.823
.823
.823
.823
.823
.823
.823
.871
.871
.871
.871
.871
.871
.871
.871
.871
.871
XCX Pro Drag
Exh.
Rated Duration @
.020" Tappet Lift
1871
1872
1873
1874
1875
1876
1877
1878
1879
330
332
334
336
338
340
342
344
346
292
294
296
298
300
302
304
306
308
205
207
209
211
213
215
217
219
221
.500
.502
.504
.506
.508
.510
.512
.514
.516
.184
.188
.193
.197
.202
.206
.211
.215
.220
.167
.171
.175
.180
.184
.188
.193
.197
.202
.800
.803
.806
.810
.813
.816
.819
.822
.826
.850
.853
.857
.860
.864
.867
.870
.874
.877
.900
.904
.907
.911
.914
.918
.922
.925
.929
XCX Drag Exh.
Rated Duration @
.020" Tappet Lift
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1 • 8 0 0 • 9 9 9 • 0 8 5 3
SOLID ROLLER
SOLID ROLLER
XJX DRAG EXHAUST ROLLERS
The XJX Drag Rollers are similar to the XCX but with higher acceleration rates, more lift, and more area under the curve.
The asymmetric design with higher opening acceleration helps move more exhaust gas at bottom dead center, reducing
losses as the piston comes up, driving the remaining exhaust from the cylinder. These profiles are designed for very stiff
valve train systems with 60mm journals and larger, .850" diameter roller lifter wheels.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.6
1.7
1.8
1680
334
296
214
.538
.204
.184
.861
.915
.968
1681
336
298
216
.540
.209
.189
.864
.918
.972
1682
338
300
218
.542
.214
.194
.867
.921
.976
XJX Pro Drag
1683
340
302
220
.544
.219
.199
.870
.925
.979
Rated Duration @
1684
342
304
222
.546
.224
.204
.874
.928
.983
.020" Tappet Lift
1685
344
306
224
.548
.229
.209
.877
.932
.986
1686
346
308
226
.550
.234
.214
.880
.935
.990
1687
348
310
228
.552
.240
.220
.883
.938
.994
1688
350
312
230
.554
.245
.225
.886
.942
.997
1699
352
314
232
.556
.249
.230
.890
.945
1.001
REV DRAG INTAKE ROLLERS
The REV Drag Rollers use some of the latest ramp designs to provide excellent torque, power and high speed stability for high
RPM competition drag race applications. When coupled with high rocker ratios, these profiles provide more area than comparable standard ratio designs.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
1770
301
268
188
.460
.147
.130
1771
303
270
190
.460
.152
.135
REV Drag Int.
1839
305
272
192
.460
.156
.139
Rated Duration @
1840
307
274
194
.460
.160
.143
.020" Tappet Lift
1842
311
278
198
.460
.169
.151
1844
315
282
201
.460
.177
.160
1846
319
286
205
.460
.186
.168
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.6
.736
.736
.736
.736
.736
.736
.736
1.7
.782
.782
.782
.782
.782
.782
.782
1.8
.828
.828
.828
.828
.828
.828
.828
RX DRAG INTAKE ROLLERS
The RX Drag Rollers are similar to the REV designs, except they have more lift and use sections of our popular RX ramp.
These designs have proven to provide an outstanding combination of high RPM power and stability without sacrificing
torque. Excellent in applications from high end bracket engines to Comp Eliminator and Pro Stock.
Rated
Camshaft Type Lobe # Duration
RX Drag Int.
.470" Lobe Lift
Rated Duration @
.020" Tappet Lift
1806
1808
1810
1812
1814
1816
294
298
302
306
310
314
Duration in
Degrees
@ .050
261
265
269
273
277
281
@ .200
181
185
189
193
196
200
Lobe
Lift
.470
.470
.470
.470
.470
.470
Tappet Lift
@ TDC
106°
.131
.139
.148
.156
.165
.174
110°
.114
.122
.131
.139
.147
.156
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.6
.752
.752
.752
.752
.752
.752
W W W . C O M P C A M S . C O M
1.7
1.8
.799
.846
.799
.846
.799
.846
.799
.846
.799
.846
.799
.846
continued on page 84
83
SOLID ROLLER
SOLID ROLLER
RX DRAG INTAKE ROLLERS cont.
Rated
Camshaft Type Lobe # Duration
RX Drag Int.
.470" Lobe Lift
Rated Duration @
.020" Tappet Lift
Duration in
Degrees
1826
310
277
197
.484
.165
.148
.774
.823
1827
312
279
199
.484
.170
.152
.774
.823
RX Drag Int.
1828
314
281
201
.484
.174
.156
.774
.823
.484" Lobe Lift
Rated Duration @ 1829
316
283
203
.484
.179
.161
.774
.823
.020" Tappet Lift 1719
318
285
204
.484
.183
.165
.774
.823
1832
322
289
208
.484
.191
.174
.774
.823
.871
.871
.871
.871
.871
.871
.470
.470
.470
106°
.178
.183
.191
110°
.160
.165
.173
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.8
.846
.846
.846
316
318
322
@ .200
202
204
208
Tappet Lift
@ TDC
1.7
.799
.799
.799
1817
1718
1820
@ .050
283
285
289
Lobe
Lift
1.6
.752
.752
.752
RX PRO DRAG INTAKE ROLLERS
These use the same ramps as the RX Drag Race .484" lobes but have more lift for all out applications.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
1742
310
277
197
.515
.166
.148
.824
.876
1743
312
279
199
.515
.170
.152
.824
.876
1744
314
281
201
.515
.175
.157
.824
.876
1736
316
283
203
.515
.180
.161
.824
.876
RX Pro Drag Int.
1745
318
285
205
.515
.184
.166
.824
.876
.515" Lobe Lift
Rated Duration @ 1737
320
287
207
.515
.189
.170
.824
.876
.020" Tappet Lift 1746
322
289
209
.515
.193
.175
.824
.876
1747
326
293
213
.515
.202
.184
.824
.876
1748
330
297
217
.515
.211
.192
.824
.876
1749
334
301
220
.515
.220
.201
.824
.876
.927
.927
.927
.927
.927
.927
.927
.927
.927
.927
RX Pro Drag Int.
Rated Duration @
.020" Tappet Lift
.488
.491
.492
.493
.496
.497
.499
106°
.161
.165
.170
.175
.180
.184
.188
110°
.143
.148
.152
.156
.160
.165
.170
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.8
.878
.884
.886
.887
.893
.895
.898
308
310
312
314
316
318
320
@ .200
195
197
199
201
203
205
207
Tappet Lift
@ TDC
1.7
.830
.835
.836
.838
.843
.845
.848
1722
1724
1726
1727
1728
1729
1730
@ .050
275
277
279
281
283
285
287
Lobe
Lift
1.6
.781
.786
.787
.789
.794
.795
.798
DR PRO DRAG INTAKE ROLLERS
The DR Pro Drag lobes are more aggressive than the RX Pro Drag lobes. They are used in professional class drag racing
or similar applications and are not recommended for use above 10,000 RPM. These use our latest design techniques to
provide excellent area and improved dynamics over similar profiles.
Rated
Camshaft Type Lobe # Duration
DR Pro Drag Int.
Rated Duration @
.020" Tappet Lift
84
1912
1914
301
305
Duration in
Degrees
@ .050
270
274
@ .200
193
197
Lobe
Lift
.507
.509
Tappet Lift
@ TDC
106°
.155
.164
110°
.137
.146
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
.862
.865
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.8
1.9
.913
.963
.916
.967
continued on page 85
SOLID ROLLER
DR PRO DRAG INTAKE ROLLERS cont.
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.7
1.8
1.9
1924
307
276
199
.520
.169
.150
.884
.936
.988
1925
309
278
201
.521
.173
.155
.886
.938
.990
1926
311
280
203
.521
.178
.159
.886
.938
.990
313
282
205
.522
.183
.164
.887
.940
.992
DR Pro Drag Int. 1927
Rated Duration @ 1928
315
284
207
.523
.188
.169
.889
.941
.994
.020" Tappet Lift 1929
317
286
209
.524
.193
.173
.891
.943
.996
1930
319
288
211
.525
.198
.178
.893
.945
.998
1931
321
290
213
.526
.202
.183
.894
.947
.999
1932
323
292
215
.527
.207
.188
.896
.949
1.001
1933
325
294
217
.528
.212
.192
.898
.950
1.003
1934
327
296
219
.529
.217
.197
.899
.952
1.005
SOLID ROLLER
Rated
Camshaft Type Lobe # Duration
TS PRO ROLLERS
The TS Pro Series is our most aggressive Pro Stock series to date with faster ramps than the DR Drag Series. These
designs get from .020" to .050" tappet lift and back in only 30°, resulting in the quickest drag race rollers COMP Cams®
has released. Excellent for Pro Stock-style drag racing applications.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
1372
TS309
278
202
.535
.176
.157
TS Pro
1373
TS311
280
204
.537
.181
.162
Rated Duration @
TS313
282
206
.539
.186
.167
.020" Tappet Lift 1374
1375
TS315
284
208
.541
.191
.172
1376
TS317
286
210
.543
.196
.176
1377
TS319
288
212
.545
.201
.181
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
.910
.913
.916
.920
.923
.927
1.8
.963
.967
.970
.974
.977
.981
1.9
1.017
1.020
1.024
1.028
1.032
1.036
TSP TSX PRO ROLLERS
The TSP and TSX Rollers are very modern, all purpose drag race lobes based loosely on the High RPM TS Pro Stock Drag
lobes but with slightly lower acceleration and lift. These are an excellent choice for 2.165" and smaller journal camshafts
where very high lobe lift lobes can compromise the base circle diameter, core strength and stability under high loads. These
have shorter seat timing than older Fuel/Blown ALC lobes but should be very good in their place if run with tighter lash.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
11124
TSP Pro
Rated Duration @ 11126
.020" Tappet Lift 11128
11130
11132
318
322
326
330
334
@ .050
287
291
295
299
303
@ .200
209
213
217
221
225
.529
.531
.533
.535
.537
106°
.191
.201
.211
.221
.231
110°
.172
.182
.191
.201
.211
1.7
.899
.903
.906
.910
.913
1.8
.952
.956
.959
.963
.967
1.9
1.005
1.009
1.013
1.017
1.020
11145
11147
TPX Pro
Rated Duration @ 11149
.020" Tappet Lift 11151
11153
330
334
338
342
346
297
301
305
309
313
216
220
224
228
232
.525
.527
.529
.531
.533
.209
.218
.228
.237
.246
.190
.199
.209
.218
.227
.893
.896
.899
.903
.906
.945
.949
.952
.956
.959
.998
1.001
1.005
1.009
1.013
W W W . C O M P C A M S . C O M
85
SOLID ROLLER
SOLID ROLLER
DLB ROLLERS
The DLB Rollers are very smooth, higher RPM profiles similar to both the TS and DRZ Drag profiles. These are a very
good choice for any extremely high RPM drag racing application that require high lift, high RPM and a wide power
range. Require high rate valve springs.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
12476
297
266
188
.519
.144
.127
12478
301
270
192
.525
.153
.135
DLB
12480
305
274
196
.531
.162
.144
Rated Duration @
12482
309
278
200
.537
.171
.153
.020" Tappet Lift
12483
311
280
202
.540
.176
.158
12484
313
282
204
.543
.181
.162
12485
315
284
206
.546
.185
.167
12486
317
286
208
.549
.190
.171
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.6
.830
.840
.850
.859
.864
.869
.874
.878
1.7
.882
.893
.903
.913
.918
.923
.928
.933
1.8
.934
.945
.956
.967
.972
.977
.983
.988
DNW ROLLERS
The DNW Rollers are similar to the DLB Series but work well in longer endurance applications that use lower rate valve
springs. Very good for short duration applications that operate under 9500 RPM. Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.5
11890
296
265
190
.522
.145
.127
.783
11891
298
267
192
.524
.150
.131
.786
DNW
11892
300
269
194
.526
.154
.136
.789
Rated Duration @
11902
300
269
194
.555
.155
.136
.833
.020" Tappet Lift
11903
302
271
196
.557
.159
.140
.836
11904
304
273
198
.559
.164
.145
.839
11906
308
277
202
.563
.174
.155
.845
11908
312
281
206
.567
.184
.164
.851
1.7
.887
.891
.894
.944
.947
.950
.957
.964
1.9
.992
.996
.999
1.055
1.058
1.062
1.070
1.077
DRZ PRO STOCK DRAG ROLLERS
These profiles are high RPM Pro Stock designs for use in modern professional drag race classes.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
1975
306
275
200
.560
.168
.149
DRZ Pro Stock
1976
308
277
201
.562
.172
.154
Drag
Rated Duration @ 1977
310
279
203
.564
.177
.158
.020" Tappet Lift 1978
312
281
205
.566
.182
.163
1979
314
283
206
.568
.186
.167
1980
316
285
208
.570
.191
.172
86
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.8
1.008
1.012
1.015
1.019
1.022
1.026
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.9
1.064
1.068
1.072
1.075
1.079
1.083
2.0
1.120
1.124
1.128
1.132
1.136
1.140
SOLID ROLLER
These profiles are high RPM Pro Stock designs for use in modern professional drag race classes.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.8
DQS Pro Stock
1939
309
279
204
.566
.180
.160
1.019
Drag
Rated Duration @ 1943
311
281
206
.568
.185
.166
1.022
.020" Tappet Lift 1945
313
283
208
.570
.190
.170
1.026
1.9
1.075
1.079
1.083
2.0
1.132
1.136
1.140
SOLID ROLLER
DQS PRO STOCK DRAG ROLLERS
DRS DRAG ROLLERS
The DRS Drag Rollers are the "evil cousin" of the DR drags. These are designed for very stiff valve train systems incorporating
60mm or larger cam journals. The major intensity of these are less than 30°, and these lobes provide more area under the curve
than any previous designs. Rated
Camshaft Type Lobe # Duration
DRS Drag
Rated Duration @
.020" Tappet Lift
1986
1987
1988
1989
1990
1991
1992
1993
1982
302
304
306
308
310
312
314
316
320
Duration in
Degrees
@ .050
273
275
277
279
281
283
285
287
291
@ .200
199
201
203
205
207
209
211
213
217
Lobe
Lift
.560
.563
.566
.569
.572
.575
.578
.581
.585
Tappet Lift
@ TDC
106°
.168
.173
.178
.183
.188
.193
.198
.203
.213
110°
.148
.153
.158
.163
.167
.172
.177
.182
.192
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.8
1.008
1.013
1.019
1.024
1.030
1.035
1.040
1.046
1.053
1.9
1.064
1.070
1.075
1.081
1.087
1.093
1.098
1.104
1.112
2.0
1.120
1.126
1.132
1.138
1.144
1.150
1.156
1.162
1.170
RS DRAG INTAKE ROLLERS
The RS Drag Intake Rollers are similar to the DR designs, except with slightly quicker opening, more lift and a new controlled
velocity design. These will be excellent in high rocker/high lift/high RPM applications, such as Comp Eliminator and Pro Stock
classes where cylinder heads require .900" to 1.050" valve lift to perform. For use with 2.125" or larger cam bearings. Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
1577
306
276
199
.532
.169
.151
1578
308
278
201
.534
.174
.155
RS Drag Int.
310
280
203
.536
.179
.160
Rated Duration @ 1579
.020" Tappet Lift 1580
312
282
205
.538
.183
.165
1581
314
284
207
.540
.188
.169
1582
316
286
209
.542
.193
.174
1585
318
288
211
.544
.198
.179
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
.904
.908
.911
.915
.918
.921
.925
W W W . C O M P C A M S . C O M
1.8
.958
.961
.965
.968
.972
.976
.979
1.9
1.011
1.015
1.018
1.022
1.026
1.030
1.034
87
SOLID ROLLER
SOLID ROLLER
DRD PRO STOCK DRAG ROLLERS
Rated
Camshaft Type Lobe # Duration
DRD Pro Stock
Drag
Rated Duration @
.020" Tappet Lift
11975
11976
11977
11978
11979
302
304
306
308
310
Duration in
Degrees
@ .050
273
275
277
279
281
@ .200
200
202
204
206
208
Lobe
Lift
.572
.574
.576
.578
.580
Tappet Lift
@ TDC
106°
.170
.175
.180
.185
.190
110°
.150
.155
.160
.165
.170
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.8
1.030
1.033
1.037
1.040
1.044
1.9
1.087
1.091
1.094
1.098
1.102
2.0
1.144
1.148
1.152
1.156
1.160
DRM PRO STOCK DRAG ROLLERS
These profiles are high RPM Pro Stock designs for use in modern professional drag race classes.
Rated
Camshaft Type Lobe # Duration
DRM Pro Stock
Drag
Rated Duration @
.020" Tappet Lift
2387
2390
2391
2399
2392
2393
303
305
307
308
309
311
Duration in
Degrees
@ .050
274
276
278
279
280
282
@ .200
202
204
206
207
208
210
Lobe
Lift
.570
.572
.574
.575
.576
.578
Tappet Lift
@ TDC
106°
.175
.180
.185
.188
.190
.196
110°
.155
.160
.165
.167
.170
.175
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.8
1.026
1.030
1.033
1.035
1.037
1.040
1.9
1.083
1.087
1.091
1.093
1.094
1.098
2.0
1.140
1.144
1.148
1.150
1.152
1.156
DRI PRO STOCK DRAG ROLLERS
The DRI Pro Stock designs fill the gap between current Pro Stock and Mountain Motor designs. For 60mm+ journals
and .850" roller wheels.
Rated
Camshaft Type Lobe # Duration
DRI Pro Stock
Drag
Rated Duration @
.020" Tappet Lift
DRI Pro Stock
Drag
Rated Duration @
.020" Tappet Lift
Higher Lift
88
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
2037
2039
2041
2042
2043
2044
2045
308
309
310
312
314
316
318
@ .050
279
280
281
283
285
287
289
@ .200
208
209
210
212
214
216
218
.575
.576
.577
.579
.581
.583
.585
106°
.190
.192
.195
.200
.205
.211
.216
110°
.169
.171
.174
.179
.184
.189
.195
1.8
1.035
1.037
1.039
1.042
1.046
1.049
1.053
2290
2291
2292
2293
2294
2295
2296
2297
2299
306
308
310
312
314
316
318
320
322
277
279
281
283
285
287
289
291
293
206
208
210
212
214
216
218
220
222
.582
.584
.586
.588
.590
.592
.594
.596
.598
.185
.190
.195
.201
.206
.212
.217
.223
.229
.164
.169
.174
.179
.184
.190
.195
.201
.206
1.048
1.051
1.055
1.058
1.062
1.066
1.069
1.073
1.076
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.9
1.093
1.094
1.096
1.100
1.104
1.108
1.112
2.0
1.150
1.152
1.154
1.158
1.162
1.166
1.170
1.106
1.164
1.110
1.168
1.113
1.172
1.117
1.176
1.121
1.180
1.125
1.184
1.129
1.188
1.132
1.192
1.136
1.196
continued on page 89
SOLID ROLLER
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
DRI Pro Stock
1568
310
281
210
.632
.197
.175
Drag
Rated Duration @ 1570
314
285
214
.636
.208
.186
.020" Tappet Lift 1572
318
289
218
.640
.220
.197
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
1.074
1.081
1.088
1.8
1.138
1.145
1.152
1.9
1.201
1.208
1.216
DRP PRO STOCK DRAG ROLLERS
These profiles are high RPM Pro Stock designs for use in modern professional drag race classes.
SOLID ROLLER
DRI PRO STOCK DRAG ROLLERS cont.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.7
1.8
1.9
2385
309
281
210
.593
.195
.174
1.008
1.067
1.127
2586
311
283
212
.595
.201
.180
1.012
1.071
1.131
2587
313
285
214
.597
.206
.185
1.015
1.075
1.134
2588
315
287
216
.599
.212
.190
1.018
1.078
1.138
2589
317
289
218
.601
.217
.196
1.022
1.082
1.142
DRP Pro
Stock Drag
Rated Duration @
.020" Tappet Lift
DRX DRAG EXHAUST ROLLERS
The DRX Drag Exhaust lobes are a faster version of our XCX designs. They have a faster opening to increase torque and
have more area under the curve. These work well with DRS intake lobes on 60mm or larger cores.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.8
1.9
2.0
1995
335
300
215
.529
.202
.185
.952
1.005
1.058
DRX Drag Exh.
Rated Duration @ 1996
337
302
217
.531
.207
.189
.956
1.009
1.062
.020" Tappet Lift 1997
339
304
219
.533
.212
.193
.959
1.013
1.066
1998
341
306
221
.535
.216
.198
.963
1.017
1.070
1999
343
308
223
.537
.221
.202
.967
1.020
1.074
XK PRO STOCK DRAG ROLLERS
These profiles are high RPM Pro Stock designs for use in modern professional drag race classes.
Rated
Camshaft Type Lobe # Duration
XK Pro Stock
Drag
Rated Duration @
.020" Tappet Lift
1734
1735
1723
1695
2724
2725
2726
2727
2728
334
336
337
338
340
342
344
346
348
Duration in
Degrees
@ .050
297
299
300
301
303
305
307
309
311
@ .200
217
219
220
222
223
225
227
229
231
Lobe
Lift
.566
.566
.566
.566
.568
.570
.572
.574
.576
Tappet Lift
@ TDC
106°
.215
.220
.222
.225
.229
.234
.239
.244
.249
110°
.194
.199
.202
.204
.208
.213
.218
.223
.228
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.8
1.019
1.019
1.019
1.019
1.022
1.026
1.030
1.033
1.037
W W W . C O M P C A M S . C O M
1.9
1.075
1.075
1.075
1.075
1.079
1.083
1.087
1.091
1.094
2.0
1.132
1.132
1.132
1.132
1.136
1.140
1.144
1.148
1.152
89
SOLID ROLLER
SOLID ROLLER
XKL PRO STOCK DRAG ROLLERS
These profiles are high RPM Pro Stock designs for use in modern professional drag race classes.
Rated
Camshaft Type Lobe # Duration
XKL Pro Stock
Drag
Rated Duration @
.020" Tappet Lift
1833
1834
1775
1835
1836
1837
1847
1848
1849
1858
1859
334
336
338
340
342
344
346
348
350
352
354
Duration in
Degrees
@ .050
298
300
302
304
306
308
310
312
314
316
318
@ .200
220
222
224
226
228
230
232
234
236
238
240
Lobe
Lift
.588
.590
.592
.594
.596
.598
.600
.602
.604
.606
.608
Tappet Lift
@ TDC
106°
.220
.226
.231
.236
.242
.247
.253
.258
.264
.269
.275
110°
.200
.205
.210
.215
.220
.226
.231
.236
.242
.247
.253
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
1.000
1.003
1.006
1.010
1.013
1.017
1.020
1.023
1.027
1.030
1.034
1.8
1.058
1.062
1.066
1.069
1.073
1.076
1.080
1.084
1.087
1.091
1.094
1.9
1.117
1.121
1.125
1.129
1.132
1.136
1.140
1.144
1.148
1.151
1.155
XK .635" PRO STOCK DRAG EXHAUST ROLLERS
The XK Pro Stock Drag Exhaust lobes are a faster version of our XCX designs. The .635" lift series is optimized for big inch
applications and 62.85 or 65mm journals.
Rated
Camshaft Type Lobe # Duration
XK .635" Pro
Stock Drag Exh.
Rated Duration @
.020" Tappet Lift
1562
1563
1564
1565
1569
1571
348
352
356
360
362
364
Duration in
Degrees
@ .050
311
315
319
323
325
327
@ .200
232
236
240
244
246
248
Lobe
Lift
.635
.635
.635
.635
.635
.635
Tappet Lift
@ TDC
106°
.254
.264
.275
.286
.291
.296
110°
.232
.242
.253
.264
.269
.274
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.8
1.080
1.080
1.080
1.080
1.080
1.080
1.9
1.143
1.143
1.143
1.143
1.143
1.143
2.0
1.207
1.207
1.207
1.207
1.207
1.207
XKH EXHAUST ROLLERS
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
1789
356
322
245
.685
.293
.270
XKH Exh.
Rated Duration @ 1792
360
326
249
.689
.304
.281
.020" Tappet Lift 1823
362
328
251
.691
.310
.287
1794
364
330
253
.693
.316
.292
1790
357
323
247
.700
.299
.276
90
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
1.165
1.171
1.175
1.178
1.190
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.8
1.233
1.240
1.244
1.247
1.260
1.9
1.302
1.309
1.313
1.317
1.330
SOLID ROLLER
The XM Pro Exhaust profiles are similar to the XKX but have higher acceleration and more area.
SOLID ROLLER
XM PRO EXHAUST ROLLERS
Rated
Camshaft Type Lobe # Duration
XM Pro Exh.
Rated Duration @
.020" Tappet Lift
2078
2079
2055
331
333
335
Duration in
Degrees
@ .050
296
298
300
@ .200
219
221
222
Lobe
Lift
.553
.555
.557
Tappet Lift
@ TDC
106°
.217
.222
.227
110°
.197
.202
.206
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
.940
.944
.947
1.8
.995
.999
1.003
1.90
1.051
1.055
1.058
ZLX PRO STOCK DRAG EXHAUST ROLLERS
The ZLX Pro Stock Drag Exhaust Series is based off of the popular XKX Exhaust Series but is quicker off the seat. Rated
Camshaft Type Lobe # Duration
ZLX Pro Stock
Drag Exh.
Rated Duration @
.020" Tappet Lift
12823
12825
12827
12829
12831
12833
12835
12386
12837
12839
336
340
344
348
352
356
360
362
364
368
Duration in
Degrees
@ .050
303
307
311
315
319
323
327
329
331
335
@ .200
225
229
233
236
240
244
248
251
253
257
Lobe
Lift
.570
.570
.570
.570
.570
.570
.570
.570
.570
.570
Tappet Lift
@ TDC
106°
.233
.244
.254
.264
.274
.284
.294
.298
.303
.312
110°
.213
.223
.234
.244
.254
.264
.274
.278
.283
.293
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.8
1.026
1.026
1.026
1.026
1.026
1.026
1.026
1.026
1.026
1.026
1.9
1.083
1.083
1.083
1.083
1.083
1.083
1.083
1.083
1.083
1.083
2.0
1.140
1.140
1.140
1.140
1.140
1.140
1.140
1.140
1.140
1.140
NX PRO STOCK DRAG EXHAUST ROLLERS
These profiles are high RPM Pro Stock designs for use in modern professional drag race classes.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
2577
332
301
224
.562
.230
.211
2578
334
303
226
.564
.235
.215
2579
336
305
228
.566
.240
.220
2580
338
307
230
.568
.246
.226
2581
340
309
232
.570
.251
.231
NX Pro Stock
Drag Exh.
Rated Duration @
.020" Tappet Lift
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.8
1.012
1.015
1.019
1.022
1.026
W W W . C O M P C A M S . C O M
1.9
1.068
1.072
1.075
1.079
1.083
2.0
1.124
1.128
1.132
1.136
1.140
91
SOLID ROLLER
SOLID ROLLER
NXX ROLLERS
The NXX is similar to the XKX Drag Rollers but optimized for lower RPM applications. They work especially well in nitrous
applications; the increased area under the curve (compared to most exhaust designs) reduces exhaust pumping losses.
These asymmetric designs have lower opening acceleration to provide a wide power band and limit loading when opening
against high cylinder pressures. Rated
Camshaft Type Lobe # Duration
NXX
Rated Duration @
.020" Tappet Lift
NXH
Rated Duration @
.020" Tappet Lift
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
11302
11304
11306
11308
11310
11312
11314
323
327
331
335
339
343
347
@ .050
292
296
300
304
308
312
316
@ .200
213
217
221
225
229
233
237
.516
.520
.524
.528
.532
.536
.540
106°
.202
.211
.220
.229
.239
.248
.257
110°
.183
.192
.183
.211
.220
.229
.239
1.6
.826
.832
.838
.845
.851
.858
.864
1.7
.877
.884
.891
.898
.904
.911
.918
1.8
.929
.936
.943
.950
.958
.965
.972
11340
11342
11344
11346
11348
341
345
349
353
357
310
314
318
322
326
231
235
239
243
247
.550
.554
.558
.562
.566
.247
.257
.266
.276
.285
.228
.237
.247
.257
.266
.880
.886
.893
.899
.906
.935
.942
.949
.955
.962
.990
.997
1.004
1.012
1.019
NXL
12338
355
325
250
.630
.302
.281
1.008
1.071
1.134
Rated Duration @
357
327
252
.630
.307
.286
1.008
1.071
1.134
.020" Tappet Lift 12339
PRI PLI PRO STOCK DRAG ROLLERS
The PRI and PLI are great baseline Pro Stock intake style drag race roller lobes with excellent area under the curve and
require less valve relief than lobes with similar ramp quickness and area.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
12416
12417
12418
PRI Pro Stock
12419
Drag
12420
Rated Duration @
.020" Tappet Lift 12421
12422
12423
12424
12425
12426
296
298
300
302
304
306
308
310
312
314
316
@ .050
268
270
272
274
276
278
280
282
284
286
288
@ .200
193
195
197
199
201
203
205
207
209
211
213
.563
.565
.567
.569
.571
.573
.575
.577
.579
.581
.583
106°
.153
.158
.163
.167
.172
.177
.182
.187
.192
.197
.202
110°
.135
.139
.144
.148
.153
.158
.163
.167
.172
.177
.182
1.75
.985
.989
.992
.996
.999
1.003
1.006
1.010
1.013
1.017
1.020
1.85
1.042
1.045
1.049
1.053
1.056
1.060
1.064
1.067
1.071
1.075
1.079
1.95
1.098
1.102
1.106
1.110
1.113
1.117
1.121
1.125
1.129
1.133
1.137
12428
12429
12430
12431
12432
12433
12434
12435
12436
298
300
302
304
306
308
310
312
314
271
273
275
277
279
281
283
285
287
199
201
203
205
207
209
211
213
215
.613
.615
.617
.619
.621
.623
.625
.627
.629
.167
.172
.178
.183
.188
.193
.199
.204
.210
.147
.152
.157
.162
.167
.172
.178
.183
.188
.981
.984
.987
.990
.994
.997
1.000
1.003
1.006
1.042
1.046
1.049
1.052
1.056
1.059
1.063
1.066
1.069
1.103
1.107
1.111
1.114
1.118
1.121
1.125
1.129
1.132
PLI Pro Stock
Drag
Rated Duration @
.020" Tappet Lift
92
1 • 8 0 0 • 9 9 9 • 0 8 5 3
SOLID ROLLER
The PRX and PLX are great baseline Pro Stock exhaust style drag race roller lobes with excellent area under the curve and
require less valve relief than lobes with similar ramp quickness and area.
Rated
Camshaft Type Lobe # Duration
PRX Pro Stock
Drag
Rated Duration @
.020" Tappet Lift
12731
12733
12735
12736
12437
12439
12441
12443
12444
12445
12446
12447
12448
12449
12450
12451
305
309
313
315
317
321
325
329
331
333
335
337
339
341
343
345
Duration in
Degrees
@ .050
274
278
282
284
286
290
294
298
300
302
304
306
308
310
312
314
@ .200
197
201
205
207
209
213
217
221
223
225
227
229
231
233
235
237
Lobe
Lift
.540
.544
.548
.550
.552
.556
.560
.564
.566
.568
.570
.572
.574
.576
.578
.580
Tappet Lift
@ TDC
106°
.164
.174
.183
.188
.193
.203
.213
.223
.228
.234
.239
.244
.249
.254
.259
.264
110°
.145
.155
.164
.169
.173
.183
.193
.203
.208
.213
.218
.223
.228
.233
.239
.244
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.75
.945
.952
.959
.963
.966
.973
.980
.987
.991
.994
.998
1.001
1.005
1.008
1.012
1.015
1.85
.999
1.006
1.014
1.018
1.021
1.029
1.036
1.043
1.047
1.051
1.055
1.058
1.062
1.066
1.069
1.073
1.95
1.053
1.061
1.069
1.073
1.076
1.084
1.092
1.100
1.104
1.108
1.112
1.115
1.119
1.123
1.127
1.131
SOLID ROLLER
PRX PLX PRO STOCK DRAG ROLLERS
@ .050
@ .200
106°
110°
1.6
1.7
1.8
12455
327
297
223
.608
.231
.209
.973
1.034
1.094
PLX Pro Stock
12456
329
299
225
.610
.237
.215
.976
1.037
1.098
Drag
12457
331
301
227
.612
.253
.231
.979
1.040
1.102
Rated Duration @
12458
333
303
229
.614
.248
.226
.982
1.044
1.105
.020" Tappet Lift
12459
335
305
231
.616
.253
.231
.986
1.047
1.109
12460
337
307
233
.618
.259
.237
.989
1.051
1.112
12461
339
309
235
.620
.265
.242
.992
1.054
1.116
12462
341
311
237
.622
.270
.248
.995
1.057
1.120
12463
343
313
239
.624
.276
.253
.998
1.061
1.123
PRZ PRO STOCK DRAG ROLLERS
Rated
Camshaft Type Lobe # Duration
PRZ Pro Stock
12470
Drag
Rated Duration @ 12471
.020" Tappet Lift 12472
334
336
338
Duration in
Degrees
@ .050
304
306
308
@ .200
230
232
234
Lobe
Lift
.596
.598
.600
Tappet Lift
@ TDC
106°
.249
.255
.260
110°
.228
.233
.238
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
1.013
1.017
1.020
W W W . C O M P C A M S . C O M
1.8
1.073
1.076
1.080
1.9
1.132
1.136
1.140
93
SOLID ROLLER
SOLID ROLLER
PVX PRO STOCK DRAG ROLLERS
Like PLX but with some offset to increase PTV clearance by about .006" at the tappet on the exhaust.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.60
1.70
1.80
PVX Pro Stock
12776
328
299
226
.610
.231
.209
.976
1.037
1.098
Drag
Rated Duration @ 12778
332
303
230
.614
.242
.220
.982
1.044
1.105
.020" Tappet Lift
PZI PRO STOCK DRAG ROLLERS
The PZI series is a tweaked version of the PRI & PLI Series that should perform better in applications running very close to
coil bind, but these do require just a bit more valve clearance.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .020
@ .050
@ .200
106°
110°
12722
302
274
202
.576
.175
.155
12723
304
276
204
.578
.180
.160
12724
306
278
206
.580
.185
.165
12725
308
280
208
.582
.190
.170
PZI Pro Stock
12726
310
282
210
.584
.196
.175
Drag
12727
312
284
212
.586
.201
.180
Rated Duration @
12728
314
286
214
.588
.206
.185
.020" Tappet Lift
12842
302
274
202
.591
.175
.155
12843
304
276
204
.593
.180
.160
12844
306
278
206
.595
.185
.165
12850
302
274
202
.606
.175
.155
12851
304
276
204
.608
.180
.160
12852
306
278
206
.610
.185
.165
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
.979
.983
.986
.989
.993
.996
1.000
1.005
1.008
1.012
1.030
1.034
1.037
1.8
1.037
1.040
1.044
1.048
1.051
1.055
1.058
1.064
1.067
1.071
1.091
1.094
1.098
1.9
1.094
1.098
1.102
1.106
1.110
1.113
1.117
1.123
1.127
1.131
1.151
1.155
1.159
SPH & SPI PRO STOCK DRAG ROLLERS
The SPH and SPI Series have similar duration numbers across the board as the PRI series but have high peak positive acceleration. These may make just a bit more power but also take up a bit more room.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
12254
SPH Pro Stock
Drag
12255
Rated Duration @ 12256
.020" Tappet Lift 12257
12258
303
305
307
309
311
@ .050
275
277
279
281
283
@ .200
203
205
207
209
211
.569
.571
.573
.575
.577
106°
.177
.183
.188
.193
.198
110°
.157
.162
.167
.173
.178
1.8
1.024
1.028
1.031
1.035
1.039
12214
SPI Pro Stock
12215
Drag
Rated Duration @ 12216
.020" Tappet Lift 12217
303
305
307
309
275
277
279
281
203
205
207
209
.577
.579
.581
.583
.178
.183
.188
.193
.158
.163
.167
.173
1.039
1.042
1.046
1.049
94
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.9
1.081
1.085
1.089
1.093
1.096
2.0
1.138
1.142
1.146
1.150
1.154
1.096
1.154
1.100
1.158
1.104
1.162
1.108
1.166
continued on page 95
SOLID ROLLER
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
SPI Pro Stock
Drag
Rated Duration @
.020" Tappet Lift
@ .050
@ .200
106°
110°
1.8
12218
311
283
211
.585
.198
.178
1.053
12219
313
285
213
.587
.204
.183
1.057
12220
315
287
215
.589
.209
.188
1.060
1.9
1.112
1.115
1.119
2.0
1.170
1.174
1.178
SOLID ROLLER
SPH & SPI PRO STOCK DRAG ROLLERS cont.
SPX PRO STOCK DRAG ROLLERS
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.8
1.9
2.0
12221
328
292
211
.555
.199
.180
.999
1.055
1.110
12222
330
294
213
.557
.204
.185
1.003
1.058
1.114
SPX Pro Stock
12223
332
296
215
.559
.209
.189
1.006
1.062
1.118
Drag
12224
334
298
217
.561
.214
.194
1.010
1.066
1.122
Rated Duration @
336
300
219
.563
.219
.199
1.013
1.070
1.126
.020" Tappet Lift 12225
12226
338
302
221
.565
.224
.204
1.017
1.074
1.130
12227
340
304
223
.567
.229
.209
1.021
1.077
1.134
12228
342
306
225
.569
.234
.214
1.024
1.081
1.138
12229
344
308
227
.571
.239
.219
1.028
1.085
1.142
XCM PRO STOCK DRAG ROLLERS
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
XCM Pro Stock
12398
341
306
228
.601
.242
.221
Drag
Rated Duration @ 12402
343
308
230
.603
.248
.226
.020" Tappet Lift 12403
345
310
232
.605
.253
.231
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.8
1.082
1.085
1.089
1.9
1.142
1.146
1.150
2.0
1.202
1.206
1.210
FPJ PRO STOCK DRAG ROLLERS
Rated
Camshaft Type Lobe # Duration
FPJ Pro Stock
Drag Rated
Duration @
.020" Tappet Lift
12488
12489
12490
302
304
306
Duration in
Degrees
@ .050
275
277
279
@ .200
206
208
210
Lobe
Lift
.596
.598
.600
Tappet Lift
@ TDC
106°
.184
.190
.195
110°
.163
.168
.173
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
1.013
1.017
1.020
W W W . C O M P C A M S . C O M
1.8
1.073
1.076
1.080
1.9
1.132
1.136
1.140
95
SOLID ROLLER
SOLID ROLLER
XNR ROLLERS
New exhaust profile like PRX but with almost no ramp.
Rated
Camshaft Type Lobe # Duration
12804
XNR
Rated Duration @ 12805
.020" Tappet Lift 12806
12807
12808
331
333
335
337
339
Duration in
Degrees
@ .050
300
302
304
306
308
@ .200
223
225
227
229
231
Lobe
Lift
.588
.590
.592
.594
.596
Tappet Lift
@ TDC
106°
.229
.234
.240
.245
.250
110°
.208
.214
.219
.224
.229
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
1.000
1.003
1.006
1.010
1.013
1.8
1.058
1.062
1.066
1.069
1.073
1.9
1.117
1.121
1.125
1.129
1.132
XRX PRO STOCK DRAG ROLLERS
Rated
Camshaft Type Lobe # Duration
XRX Pro Stock
Drag
Rated Duration @
.020" Tappet Lift
2383
2384
2369
331
333
335
Duration in
Degrees
@ .050
300
302
304
@ .200
224
226
228
Lobe
Lift
.565
.567
.569
Tappet Lift
@ TDC
106°
.231
.237
.242
110°
.211
.216
.221
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
.961
.964
.967
1.8
1.017
1.021
1.024
1.9
1.074
1.077
1.081
PVS PRO STOCK DRAG EXHAUST ROLLERS
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.75
1.85
PVS Pro Stock
12474
334
300
220
.560
.219
.200
.980
1.036
Drag Exh.
Rated Duration @ 12475
336
302
222
.562
.224
.204
.984
1.040
.020" Tappet Lift 12467
338
304
224
.564
.229
.209
.987
1.043
1.95
1.092
1.096
1.100
ZZX PRO STOCK DRAG EXHAUST ROLLERS
The ZZX Exhaust lobes have a special ramp offset to give slightly more piston to valve clearance while otherwise behaving
very much like the fast ramp PZN series.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
12951
326
298
226
.576
.234
.212
ZZX Pro Stock
12952
328
300
228
.578
.239
.217
Drag Exh.
330
302
230
.580
.245
.222
Rated Duration @ 12953
12954
332
304
232
.582
.250
.228
.020" Tappet Lift
12955
334
306
234
.584
.255
.234
96
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.75
1.008
1.012
1.015
1.019
1.022
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.85
1.066
1.069
1.073
1.077
1.080
1.95
1.123
1.127
1.131
1.135
1.139
SOLID ROLLER
Lower ratio intake design for 70mm, 75mm or 78mm effective journal size cams and low (1.5:1 to 1.7 ratios).
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
11080
312
284
215
.718
.209
.186
11081
314
286
217
.720
.215
.192
11082
316
288
219
.722
.221
.197
11083
318
290
221
.724
.228
.203
11084
320
292
223
.726
.234
.209
PIC Pro Stock
Drag
Rated Duration @
.020" Tappet Lift
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
1.077
1.080
1.083
1.086
1.089
1.6
1.149
1.152
1.155
1.158
1.162
1.7
1.221
1.224
1.227
1.231
1.234
SOLID ROLLER
PIC PRO STOCK DRAG ROLLERS
PXC PRO STOCK DRAG ROLLERS
Lower ratio exhaust design for 70mm, 75mm or 78mm effective journal size cams and low (1.5:1 to 1.7) ratios.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
11090
348
314
238
.698
.276
.252
11091
350
316
240
.700
.282
.258
11092
352
318
242
.702
.288
.264
11093
354
320
244
.704
.294
.270
11094
356
322
246
.706
.300
.276
PXC Pro Stock
Drag
Rated Duration @
.020" Tappet Lift
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
1.047
1.050
1.053
1.056
1.059
1.6
1.117
1.120
1.123
1.126
1.130
1.7
1.187
1.190
1.193
1.197
1.200
PZN PZJ PYJ PRO STOCK DRAG ROLLERS
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
12538
12539
12541
12542
PZN Pro Stock
12544
Drag
Rated Duration @ 12545
.020" Tappet Lift 12546
12547
12548
12549
12551
12590
320
322
324
326
328
330
332
334
336
338
340
336
@ .050
291
293
295
297
299
301
303
305
307
309
311
307
@ .200
218
220
222
224
226
228
230
232
234
236
238
234
.561
.563
.565
.567
.569
.571
.573
.575
.577
.579
.581
.595
106°
.214
.219
.224
.230
.235
.240
.245
.251
.256
.261
.266
.258
110°
.193
.198
.203
.209
.214
.219
.224
.229
.235
.240
.245
.237
1.75
.982
.985
.989
.992
.996
.999
1.003
1.006
1.010
1.013
1.017
1.041
1.85
1.038
1.042
1.045
1.049
1.053
1.056
1.060
1.064
1.067
1.071
1.075
1.101
1.95
1.094
1.098
1.102
1.106
1.110
1.113
1.117
1.121
1.125
1.129
1.133
1.160
12605
12606
PZJ Pro Stock
12607
Drag
12619
Rated Duration @
.020" Tappet Lift 12620
12621
12629
328
330
332
334
336
338
340
299
301
303
305
307
309
311
223
225
227
229
231
233
235
.569
.571
.573
.575
.577
.579
.581
.227
.232
.238
.242
.248
.253
.259
.206
.212
.217
.222
.227
.232
.238
.996
.999
1.003
1.006
1.010
1.013
1.017
1.053
1.056
1.060
1.064
1.067
1.071
1.075
1.110
1.113
1.117
1.121
1.125
1.129
1.133
continued on page 98
W W W . C O M P C A M S . C O M
97
SOLID ROLLER
SOLID ROLLER
PZN PZJ PYJ PRO STOCK DRAG ROLLERS cont.
Rated
Camshaft Type Lobe # Duration
PYJ Pro Stock
12611
Drag
12623
Rated Duration @
.020" Tappet Lift 12624
12625
12626
329
331
333
335
337
Duration in
Degrees
@ .050
299
301
303
305
307
@ .200
223
225
227
229
231
Lobe
Lift
.569
.571
.573
.575
.577
Tappet Lift
@ TDC
106°
.225
.230
.235
.241
.246
110°
.205
.210
.215
.220
.225
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.75
.996
.999
1.003
1.006
1.010
1.85
1.053
1.056
1.060
1.064
1.067
1.95
1.110
1.113
1.117
1.121
1.125
DKN PRO STOCK DRAG ROLLERS
Rated
Camshaft Type Lobe # Duration
11258
11259
DKN Pro Stock
11260
Drag
Rated Duration @ 11261
.020" Tappet Lift 11262
11263
11265
299
301
303
305
307
309
311
Duration in
Degrees
@ .050
271
273
275
277
279
281
283
@ .200
201
203
205
207
209
211
213
Lobe
Lift
.583
.585
.587
.589
.591
.593
.595
Tappet Lift
@ TDC
106°
.171
.176
.181
.187
.192
.198
.203
110°
.150
.155
.160
.166
.171
.176
.182
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.8
1.049
1.053
1.057
1.060
1.064
1.067
1.071
1.9
1.108
1.112
1.115
1.119
1.123
1.127
1.131
2.0
1.166
1.170
1.174
1.178
1.182
1.186
1.190
FPI PRO STOCK DRAG ROLLERS
Rated
Camshaft Type Lobe # Duration
12044
FPI Pro Stock
12045
Drag
Rated Duration @ 12046
.020" Tappet Lift 12047
12048
304
306
308
310
312
Duration in
Degrees
@ .050
276
278
280
282
284
@ .200
206
208
210
212
214
Lobe
Lift
.612
.614
.616
.618
.620
Tappet Lift
@ TDC
106°
.183
.188
.194
.199
.205
110°
.162
.167
.172
.178
.183
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
1.040
1.044
1.047
1.051
1.054
1.8
1.102
1.105
1.109
1.112
1.116
1.9
1.163
1.167
1.170
1.174
1.178
SXZ PRO STOCK DRAG ROLLERS
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
SXZ Pro Stock
12795
333
305
232
.577
.251
.230
Drag
Rated Duration @ 12796
335
307
234
.579
.256
.235
.020" Tappet Lift 12797
337
309
236
.581
.261
.241
98
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.8
1.039
1.042
1.046
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.9
1.096
1.100
1.104
2.0
1.154
1.158
1.162
SOLID ROLLER
Rated
Camshaft Type Lobe # Duration
HDZ Pro Stock
Drag
Rated Duration @
.020" Tappet Lift
11230
11231
11232
11236
303
305
307
303
Duration in
Degrees
@ .050
275
277
279
275
Lobe
Lift
@ .200
204
206
208
204
.579
.581
.583
.605
Tappet Lift
@ TDC
106°
.179
.184
.189
.180
110°
.158
.163
.168
.159
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.8
1.042
1.046
1.049
1.089
1.9
1.100
1.104
1.108
1.150
2.0
1.158
1.162
1.166
1.210
SOLID ROLLER
HDZ PRO STOCK DRAG ROLLERS
PSB PRO MOD DRAG ROLLERS
Rated
Camshaft Type Lobe # Duration
12399
12341
PSB Pro Mod
12342
Drag
Rated Duration @ 12343
.020" Tappet Lift 12344
11352
11353
11354
314
316
318
320
324
318
320
324
Duration in
Degrees
@ .050
285
287
289
291
293
289
291
293
Lobe
Lift
@ .200
213
215
217
219
221
217
219
221
.656
.658
.660
.662
.664
.688
.690
.692
Tappet Lift
@ TDC
106°
.204
.209
.215
.221
.227
.216
.222
.227
110°
.182
.187
.193
.198
.204
.193
.199
.204
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.8
1.181
1.184
1.188
1.192
1.195
1.238
1.242
1.246
1.9
1.246
1.250
1.254
1.258
1.262
1.307
1.311
1.315
2.0
1.312
1.316
1.320
1.324
1.328
1.376
1.380
1.384
XMZ PRO MOD DRAG ROLLERS
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
XMZ Pro Mod
12367
357
329
258
.635
.333
Drag
Rated Duration @ 12368
359
331
260
.637
.337
.020" Tappet Lift 12369
361
333
263
.639
.343
12387
357
329
259
.660
.335
110°
.310
.315
.321
.312
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.8
1.143
1.147
1.150
1.188
1.9
1.207
1.210
1.214
1.254
2.0
1.270
1.274
1.278
1.320
DJP ROLLERS
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
11268
296
270
202
.611
.172
.151
DJP
Rated Duration @ 11269
298
272
204
.613
.178
.156
.020" Tappet Lift 11270
300
274
206
.615
.183
.161
11271
302
276
208
.617
.188
.167
11272
304
278
210
.619
.194
.172
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.917
.920
.923
.926
.929
W W W . C O M P C A M S . C O M
1.7
1.039
1.042
1.046
1.049
1.052
1.9
1.161
1.165
1.169
1.172
1.176
99
SOLID ROLLER
SOLID ROLLER
PSA PRO STOCK DRAG ROLLERS
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
12330
313
284
211
.632
.198
.177
PSA Pro Stock
Drag
12331
315
286
213
.634
.203
.182
Rated Duration @ 12332
317
288
215
.636
.209
.187
.020" Tappet Lift 12333
319
290
217
.638
.215
.193
12334
321
292
219
.640
.220
.197
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.8
1.138
1.141
1.145
1.148
1.152
1.9
1.201
1.205
1.208
1.212
1.216
2.0
1.264
1.268
1.272
1.276
1.280
PVI PRO STOCK DRAG ROLLERS
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .020
@ .050
@ .200
106°
110°
PVI Pro
12488
302
275
206
.596
.184
.163
Stock Drag
Rated Duration @ 12489
304
277
208
.598
.190
.168
.020" Tappet Lift 12490
306
279
210
.600
.195
.173
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
1.013
1.017
1.020
1.8
1.073
1.076
1.080
1.9
1.132
1.136
1.140
DXP PRO STOCK DRAG ROLLERS
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
12114
334
304
228
.566
.241
.221
12116
338
308
232
.570
.251
.231
12117
340
310
234
.572
.257
.236
12118
342
312
236
.574
.262
.241
DXP Pro
Stock Drag
Rated Duration @
.020" Tappet Lift
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.7
.962
.969
.972
.976
1.8
1.019
1.026
1.030
1.033
1.9
1.075
1.083
1.087
1.091
XCH PRO STOCK DRAG ROLLERS
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
110°
XCH Pro
11282
328
300
227
.562
.239
.218
Stock Drag
Rated Duration @ 11283
330
302
229
.564
.244
.223
.020" Tappet Lift 11284
332
304
231
.566
.249
.229
100
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.8
1.012
1.015
1.019
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.9
1.068
1.072
1.075
2.0
1.124
1.128
1.132
SOLID ROLLER
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.8
1.9
2.0
DKL Pro
2430
301
272
201
.578
.171
.151
1.040
1.098
1.156
Stock Drag
Rated Duration @ 2419
303
274
203
.581
.176
.156
1.046
1.104
1.162
.020" Tappet Lift 2420
305
276
205
.584
.182
.161
1.051
1.110
1.168
TDS PRO STOCK DRAG ROLLERS
SOLID ROLLER
DKL PRO STOCK DRAG ROLLERS
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.8
1.9
2.0
TDS Pro
12066
305
276
202
.569
.176
.156
1.024
1.081
1.138
Stock Drag
Rated Duration @ 12067
307
278
204
.571
.181
.161
1.028
1.085
1.142
.020" Tappet Lift 12068
309
280
206
.573
.186
.166
1.031
1.089
1.146
TXJ PRO STOCK DRAG ROLLERS
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.8
1.9
TXJ Pro Stock
12072
330
297
218
.551
.214
.194
.992
1.047
Drag
Rated Duration @ 12073
332
299
220
.553
.219
.199
.995
1.051
.020" Tappet Lift 12074
334
301
222
.555
.224
.204
.999
1.055
2.0
1.102
1.106
1.110
JI PRO STOCK DRAG ROLLERS
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.8
1.9
2.0
301
274
205
.574
.180
.159
1.033
1.091
1.148
JI Pro Stock Drag 12390
Rated Duration @ 12391
303
276
207
.576
.186
.164
1.037
1.094
1.152
.020" Tappet Lift 12392
305
278
209
.578
.191
.170
1.040
1.098
1.156
PNI PRO STOCK DRAG ROLLERS
Rated
Camshaft Type Lobe # Duration
PNI Pro
Stock Drag
Rated Duration @
.020" Tappet Lift
12294
12295
12296
12297
12298
315
317
319
321
323
Duration in
Degrees
@ .050
286
288
290
292
294
@ .200
215
217
219
221
223
Lobe
Lift
.628
.630
.632
.634
.636
Tappet Lift
@ TDC
106°
.208
.214
.220
.225
.231
110°
.186
.192
.197
.203
.208
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.8
1.130
1.134
1.138
1.141
1.145
W W W . C O M P C A M S . C O M
1.9
1.193
1.197
1.201
1.205
1.208
2.0
1.256
1.260
1.264
1.268
1.272
101
SOLID ROLLER
SOLID ROLLER
PNX PRO STOCK DRAG ROLLERS
Rated
Camshaft Type Lobe # Duration
PNX Pro
Stock Drag
Rated Duration @
.020" Tappet Lift
12314
12315
12316
12317
12318
355
357
359
361
363
Duration in
Degrees
@ .050
323
325
327
329
331
@ .200
245
247
249
251
253
Lobe Lift
.599
.601
.603
.605
.607
Tappet Lift
@ TDC
106°
.286
.291
.296
.301
.306
110°
.266
.271
.276
.281
.286
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.8
1.078
1.082
1.085
1.089
1.093
1.9
1.138
1.142
1.146
1.150
1.153
2.0
1.198
1.202
1.206
1.210
1.214
PRO MOD EXHAUST ROLLERS
The Pro Mod Exhaust Series is very similar to the original High RPM Exhaust Series but with higher lifts and larger durations. These are excellent for either Mountain Motors or Pro Mod applications where more time and more area are required to scavenge the cylinder. Rated
Camshaft Type Lobe # Duration
Pro Mod Exh.
Rated Duration @
.020" Tappet Lift
1181
1183
1185
1187
1189
352
356
360
364
368
Duration in
Degrees
@ .050
312
316
320
324
328
@ .200
226
228
232
235
240
Lobe
Lift
.510
.510
.510
.510
.510
Tappet Lift
@ TDC
106°
.231
.235
.244
.250
.259
110°
.212
.217
.226
.233
.242
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.6
.816
.816
.816
.816
.816
1.7
.867
.867
.867
.867
.867
1.8
.918
.918
.918
.918
.918
DRP DJP XNP PRO STOCK DRAG ROLLERS
These profiles are high RPM Pro Stock designs for use in modern professional drag race classes.
Rated
Camshaft Type Lobe # Duration
DRP Pro
Stock Drag
Rated Duration @
.020" Tappet Lift
DJP Pro
Stock Drag
Rated Duration @
.020" Tappet Lift
102
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
2385
2586
2587
2588
2589
309
311
313
315
317
@ .050
281
283
285
287
289
@ .200
210
212
214
216
218
.593
.595
.597
.599
.601
106°
.195
.201
.206
.212
.217
110°
.174
.180
.185
.190
.196
1.7
1.008
1.012
1.015
1.018
1.022
11268
11269
11270
11271
11272
11288
296
298
300
302
304
303
@ .050
270
272
274
276
278
277
@ .200
202
204
206
208
210
210
.611
.613
.615
.617
.619
.620
106°
.172
.178
.183
.188
.194
.193
110°
.151
.156
.161
.167
.172
.171
1.5
.917
.920
.923
.926
.929
.930
1.8
1.067
1.071
1.075
1.078
1.082
1.9
1.127
1.131
1.134
1.138
1.142
1.7
1.9
1.039
1.161
1.042
1.165
1.046
1.169
1.049
1.172
1.052
1.176
1.054
1.178
continued on page 103
1 • 8 0 0 • 9 9 9 • 0 8 5 3
SOLID ROLLER
Rated
Camshaft Type Lobe # Duration
XNP Pro
Stock Drag
Rated Duration @
.020" Tappet Lift
11277
11278
11279
333
335
337
Duration in
Degrees
@ .050
304
306
308
@ .200
229
231
233
Lobe
Lift
.608
.610
.612
Tappet Lift
@ TDC
106°
.244
.250
.255
110°
.223
.228
.233
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.8
1.094
1.098
1.102
1.9
1.155
1.159
1.163
2.0
1.216
1.220
1.224
SOLID ROLLER
DRP DJP XNP PRO STOCK DRAG ROLLERS cont.
XCM PRO STOCK DRAG ROLLERS
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
@ .050
@ .200
106°
110°
1.8
1.9
XCM Pro Stock
12398
341
306
228
.601
.242
.221
1.082
1.142
Drag
Rated Duration @ 12402
343
308
230
.603
.248
.226
1.085
1.146
.020" Tappet Lift 12403
345
310
232
.605
.253
.231
1.089
1.150
2.0
1.202
1.206
1.210
DRX DRAG RACE EXHAUST ROLLERS
The DRX Drag Race Exhaust lobes are a faster version of our XCX designs. They have a faster opening to increase torque
and have more area under the curve. These work well with DRS intake lobes on 60mm or larger cores.
Rated
Camshaft Type Lobe # Duration
DRX Drag Race
Exh.
Rated Duration @
.020" Tappet Lift
1995
1996
1997
1998
1999
335
337
339
341
343
Duration in
Degrees
@ .050
300
302
304
306
308
@ .200
215
217
219
221
223
Lobe
Lift
.529
.531
.533
.535
.537
Tappet Lift
@ TDC
106°
.202
.207
.212
.216
.221
110°
.185
.189
.193
.198
.202
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.8
.952
.956
.959
.963
.967
1.9
1.005
1.009
1.013
1.017
1.020
2.0
1.058
1.062
1.066
1.070
1.074
XMZ XJZ PRO MOD EXHAUST DRAG ROLLERS
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
1.9
1.207
1.210
1.214
1.254
1.258
1.262
1.269
2.0
1.270
1.274
1.278
1.320
1.324
1.328
1.336
XJZ Pro Mod.
14040
354
324
250
.642
.303
.281
Exh.
14042
358
328
254
.644
.313
.291
Rated Duration @
362
332
258
.646
.324
.302
.020" Tappet Lift 14044
1.156
1.159
1.220
1.224
1.284
1.288
1.163
1.227
1.292
.635
.637
.639
.660
.662
.664
.668
106°
.333
.337
.343
.335
.340
.346
.358
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.8
1.143
1.147
1.150
1.188
1.192
1.195
1.202
357
359
361
357
359
361
365
@ .200
258
260
263
259
261
263
267
Tappet Lift
@ TDC
110°
.310
.315
.321
.312
.317
.323
.334
12367
12368
XMZ Pro Mod
12369
Exh.
Rated Duration @ 12387
.020" Tappet Lift 12388
12389
12401
@ .050
329
331
333
329
331
333
337
Lobe
Lift
W W W . C O M P C A M S . C O M
103
SOLID ROLLER
SOLID ROLLER
UDR FUEL & ALC INTAKE ROLLERS
The UDR designs take advantage of our latest design techniques for Chrysler Hemi drag racing classes. These will provide
higher lift and more area than older designs while improving stability for higher RPM operation with the Hemi-style valve
train geometry. For 2.124"+ journals and .800"+ roller wheels.
Rated
Camshaft Type Lobe # Duration
UDR Fuel &
ALC Int.
Rated Duration @
.020" Tappet Lift
2067
2068
2073
2074
2075
2076
2077
306
310
314
318
322
326
330
Duration in
Degrees
@ .050
273
277
281
285
289
293
297
Lobe
Lift
@ .200
192
196
199
203
207
211
215
.520
.523
.526
.526
.526
.526
.526
Tappet Lift
@ TDC
106°
.154
.162
.171
.180
.189
.199
.208
110°
.137
.145
.153
.162
.171
.180
.189
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.68
.874
.879
.884
.884
.884
.884
.884
1.73
.900
.905
.910
.910
.910
.910
.910
1.78
.926
.931
.936
.936
.936
.936
.936
FDR FUEL & ALC INTAKE ROLLERS
The FDR designs are similar to the UDR designs but have more lift and faster ramps. These are designed for slightly lower
RPM than the UDR series but should be stable in most applications. For 2.124"+ journals and .800"+ roller wheels.
Rated
Camshaft Type Lobe # Duration
FDR Fuel &
ALC Int.
Rated Duration @
.020" Tappet Lift
2082
2083
2084
2085
2086
2094
319
323
327
331
333
335
Duration in
Degrees
@ .050
287
291
295
299
301
303
Lobe
Lift
@ .200
207
211
215
219
221
223
.536
.536
.536
.536
.536
.536
Tappet Lift
@ TDC
106°
.187
.197
.206
.216
.221
.226
110°
.169
.178
.187
.197
.202
.206
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.68
.900
.900
.900
.900
.900
.900
1.73
.927
.927
.927
.927
.927
.927
1.78
.954
.954
.954
.954
.954
.954
FCX FUEL & ALC EXHAUST ROLLERS
The FCX designs are based on our popular XCX exhaust designs but have limited opening acceleration to accommodate
the increased cylinder pressures seen at exhaust opening in these applications. These will work on the intake side but are
optimized for the exhaust. For 2.124"+ journals and .800"+ roller wheels.
Rated
Camshaft Type Lobe # Duration
FCX Fuel & ALC
Exh.
Rated Duration @
.020" Tappet Lift
104
2171
2169
2162
2163
2164
2165
2166
2167
316
320
324
328
332
336
340
344
Duration in
Degrees
@ .050
277
281
285
289
293
297
301
305
@ .200
191
195
199
203
207
211
215
219
Lobe
Lift
.512
.512
.512
.512
.512
.512
.512
.512
Tappet Lift
@ TDC
106°
.154
.163
.171
.180
.189
.198
.206
.215
110°
.138
.146
.154
.162
.171
.180
.188
.197
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.68
.860
.860
.860
.860
.860
.860
.860
.860
1 • 8 0 0 • 9 9 9 • 0 8 5 3
1.73
.886
.886
.886
.886
.886
.886
.886
.886
1.78
.911
.911
.911
.911
.911
.911
.911
.911
SOLID ROLLER
SOLID ROLLER
EF FUEL & ALC INTAKE ROLLERS
These profiles are Top Fuel designs for use in modern professional drag race classes.
Rated
Camshaft Type Lobe # Duration
EF Fuel & ALC Int.
Rated Duration @
.020" Tappet Lift
2096
2097
2098
2099
329
329
335
335
Duration in
Degrees
@ .050
295
295
301
301
@ .200
211
212
217
218
Lobe
Lift
.475
.500
.475
.500
Tappet Lift
@ TDC
106°
.198
.200
.210
.213
110°
.180
.182
.193
.195
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.68
.798
.840
.798
.840
1.73
.822
.865
.822
.865
1.78
.846
.890
.846
.890
FLI FUEL INTAKE ROLLERS
These profiles are Top Fuel designs for use in modern professional drag race classes. Rated
Camshaft Type Lobe # Duration
FLI Fuel Int.
Rated Duration @
.020" Tappet Lift
2114
2115
2116
329
333
337
Duration in
Degrees
@ .050
296
300
304
@ .200
214
218
221
Lobe
Lift
.513
.515
.517
Tappet Lift
@ TDC
106°
.203
.212
.221
110°
.185
.194
.202
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.68
.862
.865
.869
1.73
.887
.891
.894
1.78
.913
.917
.920
FLX FUEL EXHAUST ROLLERS
These profiles are Top Fuel designs for use in modern professional drag race classes. Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Lobe
Lift
Tappet Lift
@ TDC
@ .050
@ .200
106°
2138
333
298
213
.510
.203
FLX Fuel Exh.
Rated Duration @ 2139
337
302
217
.512
.212
.020" Tappet Lift 2140
341
306
221
.514
.221
110°
.186
.195
.203
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.68
.857
.860
.864
1.73
.882
.886
.889
1.78
.908
.911
.915
NFV TOP FUEL PRO DRAG ROLLERS (2012/2013)
Rated
Camshaft Type Lobe # Duration
NFV Pro
Rated Duration @
.020" Tappet Lift
14154
14155
14156
14157
14158
332
333
334
335
336
Duration in
Degrees
@ .050
300
301
302
303
304
@ .200
217
218
219
220
221
Lobe Lift
.500
.501
.502
.503
.504
Tappet Lift
@ TDC
106°
.213
.216
.218
.220
.222
110°
.196
.198
.200
.203
.205
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.70
.850
.852
.853
.855
.857
W W W . C O M P C A M S . C O M
1.75
1.80
.875
.900
.877
.902
.879
.904
.880
.905
.882
.907
continued on page 106
105
SOLID ROLLER
SOLID ROLLER
NFV TOP FUEL PRO DRAG ROLLERS (2012/2013) cont.
Rated
Camshaft Type Lobe # Duration
NFV Pro
Rated Duration @
.020" Tappet Lift
14164
14165
14166
14167
14168
Duration in
Degrees
@ .050
300
301
302
303
304
332
333
334
335
336
@ .200
217
218
219
220
221
Lobe Lift
.514
.515
.516
.517
.518
Tappet Lift
@ TDC
106°
.214
.216
.218
.221
.223
110°
.197
.199
.201
.203
.205
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.70
.874
.876
.877
.879
.881
1.75
.900
.901
.903
.905
.907
1.80
.925
.927
.929
.931
.932
CHRYSLER SPECIAL RACE ROLLERS
These designs are for Chryslers only. The "Special Roller" offers a variety of lobes used primarily on 383-426W-426 Hemis
and 440 motors in Super Street, Super Stock, Pro Stock and Alcohol burning Hemis.
Rated
Camshaft Type Lobe # Duration
Chrysler Specials
Rated Duration @
.020" Tappet Lift
1661
1625
1634
4248
4083
1642
1635
1491
1649
1650
1662
314-1
320-8
327-2
324-8
333-1
330-9
327-3
331-3
335-4
336-3
342-4
Duration in
Degrees
@ .050
274
282
286
286
292
292
290
294
294
298
304
@ .200
190
202
198
204
202
208
206
208
212
214
217
Lobe
Lift
.480
.500
.500
.500
.500
.500
.485
.485
.485
.500
.500
Tappet Lift
@ TDC
106°
.148
.179
.175
.186
.174
.193
.186
.191
.199
.204
.214
110°
.132
.161
.159
.167
.168
.176
.169
.174
.183
.186
.197
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.720
.750
.750
.750
.750
.750
.728
.728
.728
.750
.750
1.6
.768
.800
.800
.800
.800
.800
.776
.776
.776
.800
.800
1.7
.816
.850
.850
.850
.850
.850
.825
.825
.825
.850
.850
OH CAM (PIVOTING FOLLOWER)ER)
FORD MODULAR XTREME ENERGY™ 4.6 & 5.4L − SOHC or DOHC
These profiles are developed for use in Ford Modular engines. The .550" versions are more aggressive off the seat and
have more area. The .500" lift versions will work in ‘98 and earlier SOHC engines without cylinder head modifications. They
also work very well in DOCH applications that have been modified to accept .500" valve lift. The .425" versions are best
suited DOHC applications with ‘99 or later PI cylinder heads and can be used with stock valve train. Valve durations and lift
given for stock valve, lifter and rocker arm geometry.
Camshaft Type
Lobe #
Rated Duration
XE F4.6
Rated Duration @
.006" Valve Lift
Valve Lift Given
w/ Stock
Geometry
9240
9241
9242
9243
9244
254
258
262
266
270
106
Duration in
Degrees
@ .050
218
222
226
230
234
@ .200
164
171
177
179
182
Lobe
Lift
.236
.236
.236
.236
.236
1 • 8 0 0 • 9 9 9 • 0 8 5 3
Valve
Lift
.425
.425
.425
.425
.425
continued on page 107
OH CAM (PIVOTING FOLLOWER)
OH CAM (PIVOTING FOLLOWER)
FORD MODULAR XTREME ENERGY™ 4.6 & 5.4L − SOHC or DOHC cont.
Camshaft Type
XE F4.6
Rated Duration @
.006" Valve Lift
Valve Lift Given
w/ Stock
Geometry
Lobe #
Rated Duration
9245
9320
9321
9322
9323
9324
9325
9341
9342
9343
9344
9345
9346
9254
9256
9257
9258
9259
9260
9266
9267
9268
9269
9270
9271
9272
9273
274
256
260
264
268
272
276
258
262
266
270
274
278
254
262
268
270
274
278
262
266
270
274
278
282
286
290
Duration in
Degrees
@ .050
238
220
224
228
232
236
240
222
226
230
234
238
242
216
224
230
232
236
240
226
230
234
238
242
246
250
254
@ .200
186
165
168
172
176
179
183
169
172
176
180
183
186
164
171
177
179
182
186
177
181
185
189
192
196
199
203
Lobe
Lift
Valve
Lift
.236
.250
.250
.250
.250
.250
.250
.263
.263
.263
.263
.263
.263
.274
.274
.274
.274
.274
.274
.300
.300
.300
.300
.300
.300
.300
.300
.425
.450
.450
.450
.450
.450
.450
.475
.475
.475
.475
.475
.475
.500
.500
.500
.500
.500
.500
.550
.550
.550
.550
.550
.550
.550
.550
MODULAR STOCKER
Camshaft Type
SE
Rated Duration @
.006" Valve Lift
Lobe #
Rated Duration
9291
9292
9293
9294
9295
9296
9297
19307
19305
19291
19292
19306
19295
19296
268
276
282
288
294
296
300
273
286
290
294
299
260
268
Duration in
Degrees
@ .050
235
243
249
255
261
263
267
239
253
257
261
265
227
235
@ .200
178
185
191
198
204
206
210
183
196
200
205
209
170
178
Lobe
Lift
Valve
Lift
.217
.217
.217
.217
.217
.217
.217
.225
.225
.225
.225
.225
.230
.230
.387
.387
.387
.387
.387
.387
.387
.402
.402
.402
.402
.402
.412
.412
continued on page 108
W W W . C O M P C A M S . C O M
107
OH CAM (PIVOTING FOLLOWER)
OH CAM (PIVOTING FOLLOWER)
MODULAR STOCKER cont.
Camshaft Type
SE
Rated Duration @
.006" Valve Lift
Lobe #
Rated Duration
19301
19297
19293
19294
9298
9299
19298
19299
19300
9300
9283
9284
9303
9301
9304
9302
9306
9307
9371
9373
9310
9311
9312
9313
9314
9315
19314
19315
272
276
290
294
298
308
260
268
276
268
270
272
274
278
284
288
292
294
298
302
286
288
290
292
296
300
296
300
Duration in
Degrees
@ .050
239
243
257
261
265
275
227
235
243
235
237
239
241
245
251
255
259
261
265
269
253
255
257
259
263
267
263
267
@ .200
182
186
201
205
209
219
172
180
188
182
285
187
189
192
198
202
206
208
212
216
201
203
205
207
211
215
212
215
Lobe
Lift
Valve
Lift
.230
.230
.230
.230
.230
.230
.244
.244
.244
.262
.262
.262
.262
.262
.262
.262
.262
.262
.262
.262
.282
.282
.282
.282
.282
.282
.302
.302
.412
.412
.412
.412
.412
.412
.438
.438
.438
.472
.472
.472
.472
.472
.472
.472
.472
.472
.472
.472
.510
.510
.510
.510
.510
.510
.550
.550
MHS MODULAR STOCKER
Duration in
Degrees
Lobe
Lift
Valve
Lift
@ .050
@ .200
MHS
Rated Duration @
19235
290
248
195
.276
.006" Valve Lift
19236
294
252
197
.276
.500
.500
Camshaft Type
Lobe #
Rated Duration
TECH SUPPORT OPTIONS
Contact us by any of the means listed below to speak with one of our highly trained technical staff members who can
help you select the proper camshaft and matching valve train components.
Phone
1.800.999.0853
108
Forums
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Email & Chat
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1 • 8 0 0 • 9 9 9 • 0 8 5 3
Twitter
@CPGTech
OH CAM (PIVOTING FOLLOWER)
The MH Series designs are for Ford Modular 2V & 4V race type applications. These can be used either with a standard
hydraulic lash adjuster or a solid adjuster conversion. In solid applications, the recommended lash is .010" to .016" at
the valve tip or .006" to .010" in between the cam and roller follower. These are stable at higher engine speeds than the
standard street lobe profiles but do not have long street style closing ramps for idle noise reduction. Cylinder head modifications are highly recommended to take advantage of the additional lift.
Camshaft Type
XE F4.6
.940" BCR
Rated Duration @
.006" Valve Lift
Lobe #
Gross
Valve Lift
19262
19263
19264
19265
19266
19267
19268
19269
19370
19370
.585
.585
.585
.585
.585
.585
.585
.585
.585
.585
Duration in
Degrees
@ .006
278
282
286
290
294
298
302
306
314
314
@ .050
236
240
244
248
252
256
260
264
272
272
Valve Lift
@ TDC
@ .200
183
187
191
195
199
203
207
211
218
218
106°
.105
.117
.129
.142
.155
.168
.182
.195
.221
.221
110°
.083
.094
.105
.117
.129
.142
.155
.168
.194
.194
Checking
Duration
Lobe
Lift
@ .050/.750 Wheel
218
222
226
230
234
238
242
246
254
254
.320
.320
.320
.320
.320
.320
.320
.320
.320
.320
19272
.625
278
236
183
.105
.083
218
19273
.625
282
240
187
.117
.094
222
19274
.625
286
244
191
.129
.105
226
19275
.625
290
248
195
.142
.117
230
XE F4.6
19276
.625
294
252
199
.155
.129
234
.920" BCR
Rated Duration @ 19277
.625
298
256
203
.169
.142
238
.006" Valve Lift
19278
.625
302
260
207
.183
.156
242
19279
.625
306
264
211
.197
.169
246
19280
.625
310
268
215
.210
.183
250
19380
.625
314
272
219
.224
.196
254
.341
.341
.341
.341
.341
.341
.341
.341
.341
.341
OH CAM (PIVOTING FOLLOWER)
MH 2V & 4V MODULAR RACE
FORD MODULAR XTREME ENERGY™ 4.6 & 5.4L − 3V
These profiles are developed for use in 3V Ford Modular engines. Note that the effective rocker ratio is much higher in this
application than in the 2V or 4V. The base circles are also smaller, hence the other profiles are not recommended in 3V
applications. Also, these 3V intake profiles are quicker than the exhaust due to the much lighter valves.
Duration in
Degrees
Camshaft Type
Lobe #
Rated
Duration
XE 3V Mod Int.
Rated Duration @
.006" Valve Lift
9234
9236
9237
9238
9239
253
261
265
269
273
@ .050
214
222
226
230
234
XE 3V Mod Exh.
Rated Duration @
.006" Valve Lift
9246
9247
9248
9251
9252
270
274
278
282
286
227
231
235
239
243
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
Valve
Lift
Lobe
Lift
@ .200
161
169
173
177
181
.480
.490
.500
.510
.520
.236
.241
.246
.251
.255
2.0
.472
.482
.492
.502
.510
169
173
177
181
185
.470
.475
.480
.485
.490
.234
.235
.237
.240
.243
.468
.470
.474
.480
.486
W W W . C O M P C A M S . C O M
2.05
.484
.494
.504
.515
.523
2.1
.496
.506
.517
.527
.536
.480
.491
.482
.494
.486
.498
.492
.504
.498
.510
continued on page 110
109
OH CAM (PIVOTING FOLLOWER)
OH CAM (PIVOTING FOLLOWER)
FORD MODULAR XTREME ENERGY™ 4.6 & 5.4L − 3V cont.
Duration in
Degrees
Lobe #
Rated
Duration
19202
19203
19204
19205
19207
19209
253
257
261
265
273
281
@ .050
214
218
222
226
234
242
XE 3V LL Mod
Exh.
Rated Duration @
.006" Valve Lift
19213
19214
19215
19216
270
274
278
282
XE 3V LL THMP-X
Rated Duration @
.006" Valve Lift
Faster Intake
19221
19223
19225
19194
XE 3V TVK Int.
Rated Duration @
.006" Valve Lift
XE 3V TVK Exh.
Rated Duration @
.006" Valve Lift
Camshaft Type
XE 3V LL Mod Int.
Rated Duration @
.006" Valve Lift
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
Valve
Lift
Lobe
Lift
@ .200
160
163
167
171
179
186
.450
.450
.450
.450
.450
.450
.222
.222
.222
.222
.222
.222
2.0
.444
.444
.444
.444
.444
.444
2.05
.455
.455
.455
.455
.455
.455
2.1
.466
.466
.466
.466
.466
.466
227
231
235
239
169
173
176
180
.450
.450
.450
.450
.223
.223
.223
.223
.446
.446
.446
.446
.457
.457
.457
.457
.468
.468
.468
.468
298
306
314
264
246
254
262
228
186
193
201
176
.450
.450
.450
.500
.223
.223
.223
.246
.446
.446
.446
.492
.457
.457
.457
.504
.468
.468
.468
.517
19240
19242
19244
19246
256
264
272
280
221
229
237
245
171
179
187
195
.523
.535
.547
.559
.256
.262
.267
.273
.512
.524
.534
.546
.525
.537
.547
.560
.538
.550
.561
.573
19251
19253
19254
19255
19256
19258
267
275
279
283
287
295
228
236
240
244
248
256
176
184
188
192
195
203
.538
.550
.555
.560
.560
.560
.265
.271
.273
.275
.275
.275
.530
.542
.546
.550
.550
.550
.543
.556
.560
.564
.564
.564
.557
.569
.573
.578
.578
.578
FORD MODULAR RSS RACE − 3V
Camshaft Type
Lobe #
Rated
Duration
XE 3V RSS Int.
Solid
Rated Duration @
.010" Valve Lift
19400
19402
19404
298
306
314
Duration in
Degrees
@ .050
260
268
276
@ .200
204
212
220
Valve
Lift
Lobe
Lift
.650
.650
.650
.316
.316
.316
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
2.0
.632
.632
.632
2.05
.648
.648
.648
2.1
.664
.664
.664
XE 3V RSS Exh.
19409
317
272
213
.700
.340
.680
.697
.714
Solid
19411
325
280
221
.700
.340
.680
.697
.714
Rated Duration @
19413
333
288
229
.700
.340
.680
.697
.714
.010" Valve Lift
110
1 • 8 0 0 • 9 9 9 • 0 8 5 3
OH CAM (PIVOTING FOLLOWER)
Duration in
Degrees
Camshaft Type
Lobe #
Rated
Duration
NSRI Int.
Rated Duration @
.004" Valve Lift
19554
19556
19558
267
275
283
@ .050
220
228
236
NSRX Exh.
Rated Duration @
.004" Valve Lift
19564
19565
19566
19567
19568
19569
276
280
284
288
292
296
223
227
231
235
239
243
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
Valve
Lift
Lobe
Lift
@ .200
167
175
183
.492
.492
.492
.244
.244
.244
2.0
.488
.488
.488
2.05
.500
.500
.500
2.1
.512
.512
.512
167
171
175
179
183
186
.453
.453
.453
.453
.453
.453
.225
.225
.225
.225
.225
.225
.450
.450
.450
.450
.450
.450
.461
.461
.461
.461
.461
.461
.473
.473
.473
.473
.473
.473
Valve
Lift
Lobe
Lift
FORD COYOTE CRI & CRX RACE − 4V
Duration in
Degrees
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
Camshaft Type
Lobe #
Rated
Duration
CRI Int.
Rated Duration @
.004" Valve Lift
19578
19582
19583
19584
290
278
282
286
@ .050
244
232
236
240
@ .200
191
181
185
189
.512
.561
.565
.571
.2532
.2760
.2779
.2806
2.0
.506
.552
.556
.561
2.05
.519
.566
.570
.575
2.1
.532
.580
.584
.589
CRX Exh.
Rated Duration @
.004" Valve Lift
19592
19593
19594
19595
287
291
295
299
234
238
242
246
179
183
187
191
.502
.507
.512
.512
.2486
.2509
.2532
.2532
.497
.502
.506
.506
.510
.514
.519
.519
.522
.527
.532
.532
CRI Int. Stocker
Rated Duration @
.004" Valve Lift
19608
290
244
190
.470
.2335
.467
.479
.490
CRX Exh. Stocker
Rated Duration @
.004" Valve Lift
19615
299
246
190
.470
.2335
.467
.479
.490
OH CAM (PIVOTING FOLLOWER)
FORD COYOTE NSRI & NSRX STREET − 4V
GO CUSTOM
Look no further than COMP Cams® for the perfect camshaft for your application. We offer thousands of ready-to ship cams that are sure to meet
your needs. But what if you don’t see exactly what you’re looking for in our
part numbered catalog selection? No problem. COMP Cams® can custom
grind a cam that is optimized to your exact specifications and have you up
and running in less than 48 hours. With over three decades of valve train
engineering expertise, COMP® can give you exactly what you want when
you want it. We’re just waiting for you to call.
1.800.999.0853 • compcams.com
W W W . C O M P C A M S . C O M
111
OH CAM (PIVOTING FOLLOWER)
OH CAM (PIVOTING FOLLOWER)
FORD 2000-2300 OHC STREET
These profiles are designed for use in Ford 2000-2300 OHC (Pinto) applications with factory style sliding followers. Cams must
be nitrided after grinding and will require extra time. Valve durations and lift given for stock valve, lifter and rocker geometry.
Camshaft Type
Lobe #
Rated Duration
Duration in
Degrees
Lobe
Lift
Valve
Lift
Street
Hydraulic
Valve Lift Given
w/ Stock
Geometry
8022
8023
8024
8025
8026
@ .010
240
252
260
268
280
@ .050
200
210
218
226
236
.240
.246
.252
.264
.277
.400
.406
.420
.440
.460
8006
272
242
.282
Street
Solid
8007
294
264
.292
.010" Lash
8008
300
278
.350
.445
.463
.580
FORD 2000-2300 OHC RACE
These profiles are designed for use in Ford 2000-2300 OHC (Pinto) applications with factory style sliding followers. Cams must
be nitrided after grinding and will require extra time. Valve durations and lift given for stock valve, lifter and rocker geometry. Camshaft Type
Lobe #
Rated Duration
Duration in
Degrees
Lobe
Lift
Valve
Lift
Race Base
Solid
.010" Lash
Valve Lift Given
w/ Stock
Geometry
8064
8066
8098
8096
8090
270
280
280
288
300
@ .050
238
248
248
256
268
.280
.300
.270
.300
.345
.460
.500
.460
.500
.575
Race .480"
Lift Rule Solid
.010" Lash
8312
8314
8316
288
292
296
260
264
268
.284
.284
.284
.480
.480
.480
8304
294
272
.297
8306
300
278
.297
8325
314
282
.297
8327
320
288
.297
.516
.516
.516
.516
Race
Base Solid
.010" Lash
FORD 2000-2300 OHC RACE ROLLER FOLLOWER
These profiles are designed for use in Ford 2000-2300 OHC (Pinto) applications with roller followers.
Camshaft Type
Lobe #
Rated Duration
Duration in
Degrees
Lobe
Lift
Valve
Lift
Race
Hi-Tech™ Roller
.010" Lash
Int-Ex
8374-8375
8376-8377
8380-8381
8382-8383
279
283
291
295
@ .050
246
250
258
262
.344
.344
.344
.344
.620
.620
.620
.620
continued on page 113
112
1 • 8 0 0 • 9 9 9 • 0 8 5 3
OH CAM (PIVOTING FOLLOWER)
Camshaft Type
Lobe #
Rated Duration
Duration in
Degrees
Lobe
Lift
Valve
Lift
Race Hi-Tech™
Roller
.010" Lash
Int-Ex
8384-8385
8386-8387
299
303
@ .050
266
270
.344
.344
.620
.620
Int
8360
8362
8364
8366
286
290
294
298
@ .050
258
262
266
270
.355
.360
.363
.363
.645
.655
.660
.660
Race
RT Style Roller
.010" Las
FORD 2300 − FP ROLLER
These profiles are designed at the valve for a .500" base circle radius Ford 2300 with roller followers. Use an "I" suffix for
intake profiles and an "E" suffix for exhaust profiles.
Camshaft Type
2300 FP Roller
Race
Rated Duration @
.020" Valve Lift
Lobe #
Rated
Duration
8410
8411
8412
8413
8414
8420
8421
8422
8423
8424
313
317
321
325
329
313
317
321
325
329
Duration in
Degrees
@ .050
284
288
292
296
300
284
288
292
296
300
@ .200
221
225
229
233
237
221
225
229
233
237
Valve
Lift
Lobe
Lift
Lobe Check
Duration
.658
.664
.670
.676
.682
.710
.710
.710
.710
.710
.360
.363
.366
.369
.372
.387
.387
.387
.387
.387
@ .050
261
265
269
273
277
261
265
269
273
277
8552
322
291
226
.745
.405
8553
326
295
230
.745
.405
8554
330
299
234
.745
.405
8555
334
303
238
.745
.405
8556
338
307
242
.745
.405
2300 FPS Roller
Race
Rated Duration @
.020" Valve Lift
OH CAM (PIVOTING FOLLOWER)
FORD 2000-2300 OHC RACE ROLLER FOLLOWER cont.
267
271
275
279
283
GM ECOTECH − XTREME ENERGY™ HYDRAULIC ROLLER OHC
These profiles are designed for use in GM ECOTECH applications. Valve durations and lift given for stock valve, lifter and
rocker arm geometry.
Camshaft Type
Lobe #
Rated
Duration
Int.
Street Hydraulic
Rated Duration @
.006" Valve Lift
8754
8756
8758
8760
8762
240
246
252
258
264
Duration in
Degrees
@ .050
198
204
210
216
222
@ .200
141
146
151
157
164
Lobe
Lift
Valve
Lift
.251
.251
.251
.260
.270
.423
.423
.423
.440
.456
continued on page 114
W W W . C O M P C A M S . C O M
113
OH CAM (PIVOTING FOLLOWER)
OH CAM (PIVOTING FOLLOWER)
GM ECOTECH − XTREME ENERGY™ HYDRAULIC ROLLER OHC cont.
Duration in
Degrees
Camshaft Type
Lobe #
Rated
Duration
Exh.
Street Hydraulic
Rated Duration @
.006" Valve Lift
8755
8757
8759
8761
8763
244
250
256
262
268
@ .050
200
206
212
218
224
Race Int.
Rated Duration @
.006" Valve Lift
8766
8770
8780
292
303
310
Race Exh.
Rated Duration @
.006" Valve Lift
8767
8771
8781
294
306
314
Lobe
Lift
Valve
Lift
@ .200
140
145
150
156
163
.248
.248
.248
.258
.268
.419
.419
.419
.436
.453
247
259
267
186
198
207
.294
.300
.350
.499
.511
.591
249
261
268
187
199
208
.294
.300
.350
.499
.512
.591
MITSUBISHI 4G63 − XTREME ENERGY™ HYDRAULIC ROLLER OHC
These profiles are designed for use in Mitsubishi 4G63 applications. Valve durations and lift given for stock valve, lifter
and rocker arm geometry.
Camshaft Type
Lobe #
Rated
Duration
Duration in
Degrees
Lobe
Lift
Valve
Lift
Int./Exh.
Mitsubishi 4G63
Street Hydraulic
Rated Duration @
.004" Valve Lift
8735
8736
8737
8738
8739
8740
8741
8742
8745
8746
251
250
259
258
259
258
266
266
256
257
@ .050
204
204
212
212
212
212
220
220
210
210
.237
.229
.239
.232
.239
.232
.242
.234
.255
.239
.407
.391
.411
.395
.411
.395
.415
.399
.434
.411
Int.
Exh.
Int.
Exh.
Int.
Exh.
Int.
Exh.
Int.
Exh.
NISSAN L16, 18, 20B
These profiles are designed for use in Nissan L16, 18, 20B applications. Valve durations and lift given for stock valve and
rocker arm geometry. Camshaft Type
Street
114
Lobe #
Rated
Duration
Duration in
Degrees
Lobe
Lift
Valve
Lift
Int.- Exh.
8250
8255
8251
8252
8253
8254
@ .010
240
252
260
268
280
292
@ .050
194
204
214
222
236
246
.285
.293
.301
.308
.330
.344
.400
.410
.420
.430
.460
.480
continued on page 115
1 • 8 0 0 • 9 9 9 • 0 8 5 3
OH CAM (PIVOTING FOLLOWER)
Camshaft Type
Race
Lobe #
Rated
Duration
Duration in
Degrees
Lobe
Lift
Valve
Lift
Int.- Exh.
8260
8261
8262
@ .010
294
300
306
@ .050
258
264
270
.395
.400
.405
.573
.580
.587
TOYOTA 20R-22RE
These profiles are designed for use in Toyota 20R-22RE applications. Valve durations and lift given are for stock valve and
rocker arm geometry. Camshaft Type
Street
Race
Lobe #
Rated
Duration
Duration in
Degrees
Lobe
Lift
Valve
Lift
Int. - Exh.
8216-8217
8218-8219
8202-8203
8204-8205
8206-8207
@ .010
247
255
263
271
279
@ .050
206
214
222
230
238
.282
.288
.295
.301
.321
.419
.429
.440
.450
.484
8232-8233
8234-8235
8236-8237
8240-8241
8242-8243
317
321
325
321
325
275
279
283
279
283
.308
.305
.305
.328
.328
.460
.457
.457
.505
.505
SOH SERIES OHC ROLLERS for FORD 427 SOHC
Rated
Camshaft Type Lobe # Duration
427 SOHC Lobes
Std. Lift - Street
Rated Duration @
.015" Tappet Lift
8430
8432
8434
8436
@ .015
278
286
294
302
Duration in
Degrees
@ .050
244
252
260
268
@ .200
178
185
193
200
Lobe
Lift
.464
.470
.476
.482
Tappet Lift
@ TDC
106°
.111
.130
.150
.170
110°
.092
.111
.130
.150
OH CAM (PIVOTING FOLLOWER)
NISSAN L16, 18, 20B cont.
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.25
.580
.588
.595
.603
1.275
.592
.599
.607
.615
1.30
.603
.611
.619
.627
427 SOHC Lobes 8440
310
276
211
.538
.196
.174
.673
.686
.699
High Lift - Race
8442
318
284
218
.542
.216
.194
.678
.691
.705
Rated Duration @
326
292
226
.546
.234
.213
.683
.696
.710
.015" Tappet Lift 8444
W W W . C O M P C A M S . C O M
115
OH CAM (PIVOTING FOLLOWER)
OH CAM (PIVOTING FOLLOWER)
VM OHC ROLLERS for FORD 427 SOHC
The VM series Ford 427 SOHC profiles are designed first "at the valve" with optimized motion for the right intake and left
exhaust "A" pairs and also the left intake and right exhaust "B" pairs. This valve motion is then converted back to a lobe
checking file for manufacturing and inspection. By "reverse engineering" the camshaft backwards from the desired valve
motion, more area under the curve along with better stability and improved motion symmetry from intake to exhaust and
from bank to bank is achieved. Use an "RI" prefix for the right intake, an "RE" perfect for the right exhaust, an "LI" prefix for
the left intake and an "LE" prefix for the left exhaust all before the desire ID number when ordering individual cams. Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Valve Lift
@ TDC
Valve
Lift
Check
w/
Lift Lift
Duration Check
Fixed
Tappet
Tappet
Ratio
Ford 427 SOHC
Std. Lift - Street
Rated Duration @
.020" Valve Lift
8560
8564
8566
8568
288
288
296
304
@ .050
264
264
272
280
@ .200
207
208
216
224
.543
.592
.598
.604
106°
.184
.188
.214
.240
110°
.160
.162
.188
.214
@ .050
252
252
260
268
.431
.472
.477
.482
1.27
.547
.599
.606
.612
Ford 427 SOHC
High Lift - Race
Rated Duration @
.020" Valve Lift
8590
8592
8594
8596
8598
284
292
300
308
316
261
269
277
285
293
206
214
222
230
238
.696
.702
.708
.714
.720
.180
.210
.240
.270
.300
.150
.180
.210
.240
.270
249
257
265
273
281
.559
.564
.569
.574
.579
.710
.716
.723
.729
.735
OH CAM (DIRECT ACTING)ER)
VW OR DIRECT 1" TAPPET
Camshaft Type
Lobe #
Rated
Duration
Duration in
Degrees
Lobe
Lift
Minimum
Tappet O.D.
Minimum
BCR
@ .010"
@ .050"
@ .200"
6800
216
180
95
.260
1.000
.640
6801
226
190
109
.280
1.000
.620
6802
236
200
122
.300
1.000
.600
VW or Direct
1" Tappet
6803
246
210
134
.320
1.000
.580
Direct - Bucket
6804
256
220
145
.340
1.000
.560
6805
266
230
153
.360
1.000
.540
6806
276
240
162
.380
1.000
.520
6807
286
250
169
.400
1.000
.500
6808
296
260
179
.420
1.000
.480
OHC − MULTIPURPOSE BUCKET
Camshaft Type
Lobe #
Rated
Duration
OHC
Direct - Bucket
9048
9042
9045
@ .010"
248
256
274
Duration in
Degrees
@ .050"
215
222
228
@ .200"
146
150
144
Lobe Lift
Minimum
Tappet O.D.
Minimum
BCR
.365
.360
.320
1.080
1.020
.900
.550
.550
.500
continued on page 117
116
1 • 8 0 0 • 9 9 9 • 0 8 5 3
OH CAM (DIRECT ACTING)
OHC − MULTIPURPOSE BUCKET cont.
Lobe #
Rated
Duration
Duration in
Degrees
Lobe Lift
Minimum
Tappet O.D.
@ .010"
@ .050"
@ .200"
9044
264
230
158
.360
1.000
9046
273
238
162
.360
.980
OHC
Direct - Bucket
Minimum
BCR
.500
.500
OH CAM (DIRECT ACTING)
Camshaft Type
QUAD 4 − BUCKET
Camshaft Type
Lobe #
Rated
Duration
Quad 4
Direct - Bucket
9013
9014
9015
@ .010"
260
266
272
Duration in
Degrees
@ .050"
226
232
238
@ .200"
160
166
172
Lobe Lift
Minimum
Tappet O.D.
Minimum
BCR
.410
.420
.430
1.100
1.100
1.100
.650
.650
.650
OHZ − STREET/STRIP BUCKET
Camshaft Type
OHZ
Direct - Bucket
Lobe #
Rated
Duration
9090
9091
9092
9093
9086
9087
@ .006"
258
262
268
274
280
286
Duration in
Degrees
@ .050"
214
218
224
230
236
242
@ .200"
149
153
158
163
168
173
Lobe
Lift
Minimum
Tappet O.D.
Minimum
BCR
.400
.400
.400
.400
.400
.400
1.180
1.180
1.180
1.180
1.180
1.180
.680
.660
.640
.620
.600
.600
@ .006"
@ .050"
@ .200"
9094
264
220
153
.380
1.180
.650
OHZ
9095
272
228
160
.380
1.180
.630
Direct - Bucket
9109
280
235
150
.320
1.025
.500
9096
280
236
166
.380
1.180
.610
9108
284
239
163
.360
1.025
.500
OHRX − HIGH RPM BUCKET
Camshaft Type
OHRX Int.
Direct - Bucket
Lobe #
Rated
Duration
9072
9073
9074
9102
9103
9104
9105
9122
9124
0.010"
294
300
306
279
285
283
289
294
306
Duration in
Degrees
@ .050"
260
266
272
245
251
249
255
260
272
@ .200"
199
204
210
186
192
192
198
198
210
Lobe
Lift
Minimum
Tappet O.D.
Minimum
BCR
.480
.490
.500
.510
.510
.550
.550
.500
.530
1.200
1.200
1.200
1.325
1.325
1.458
1.458
1.200
1.200
.530
.530
.530
.650
.650
.690
.690
.580
.580
OHRX Exh.
9141
336
274
208
.490
1.200
.530
W W W . C O M P C A M S . C O M
117
OH CAM (DIRECT ACTING)
OH CAM (DIRECT ACTING)
OHRXV − HIGH LIFT
Camshaft Type
OHRXV
Direct - Bucket
Lobe #
Rated
Duration
9116
9117
9118
.010"
306
310
314
Duration in
Degrees
@ .050"
273
277
281
@ .200"
212
216
220
Lobe Lift
Minimum
Tappet O.D.
Minimum
BCR
.553
.560
.565
1.200
1.200
1.200
.530
.530
.530
XCOH − EXHAUST HIGH LIFT
Camshaft Type
Lobe #
Rated
Duration
XCOH
Direct - Bucket
9132
9133
9134
9135
.010"
317
321
325
329
Duration in
Degrees
@ .050"
270
274
278
282
@ .200"
205
209
213
217
Lobe
Lift
Minimum
Tappet O.D.
Minimum
BCR
.495
.500
.505
.510
1.200
1.200
1.200
1.200
.530
.530
.530
.530
OHRXA − STREET INTAKE
Camshaft Type
Lobe #
Rated
Duration
OHRXA Int.
Direct - Bucket
9126
9127
9128
.010"
285
291
297
Duration in
Degrees
@ .050"
251
257
263
@ .200"
187
194
200
Lobe
Lift
Minimum
Tappet O.D.
Minimum
BCR
.475
.490
.505
1.180
1.180
1.180
.530
.530
.530
OHRXA − STREET EXHAUST
Camshaft Type
Lobe #
Rated
Duration
Duration in
Degrees
Lobe
Lift
Minimum
Tappet O.D.
.010"
@ .050"
@ .200"
9146
295
246
180
.440
1.150
OXRXA Exh.
9147
301
252
186
.452
1.150
Direct - Bucket
9148
307
258
193
.464
1.150
118
1 • 8 0 0 • 9 9 9 • 0 8 5 3
Minimum
BCR
.500
.500
.500
OH CAM (DIRECT ACTING)
Fast Intake OHC Lift Rule & RPM Limited ­— 33mm Bucket, .738" BCR. Can be used with Hydraulic Bucket and zero lash or
with Solid Bucket and .005" to .010" lash.
Rated
Camshaft Type Lobe # Duration
PCI 33 Int.
Rated Duration @
.006" Tappet Lift
19701
19702
19703
293
297
301
Duration in
Degrees
@ .010
282
286
290
Duration in
Degrees
@ .020
267
271
275
@ .050
248
252
256
Tappet Lift
@ TDC
Lobe
Lift
@ .200
192
196
200
.498
.498
.498
106°
.144
.155
.166
110°
.122
.133
.144
114°
.100
.111
.122
PCX EXHAUST− LIMITED RPM OHC 33mm BUCKET
Exhaust OHC Lift Rule & RPM Limited — 33mm Bucket, .738" BCR. Can be used with Hydraulic Bucket and zero lash or
with Solid Bucket and .005" to .010" lash.
Rated
Camshaft Type Lobe # Duration
Duration in
Degrees
Duration in
Degrees
Tappet Lift
@ TDC
Lobe
Lift
@ .010
@ .020
@ .050
@ .200
19704
290
280
264
242
185
.498
PCX 33 Exh.
19705
294
284
268
246
189
.498
Rated Duration @ 19706
298
288
272
250
193
.498
.006" Tappet Lift 19707
302
292
276
254
197
.498
19708
306
296
280
258
201
.498
106°
.126
.137
.148
.159
.170
110°
.104
.115
.126
.137
.148
OH CAM (DIRECT ACTING)
PCI INTAKE − LIMITED RPM OHC 33mm BUCKET
114°
.083
.093
.104
.115
.126
PDI INTAKE − LIMITED RPM OHC 33mm BUCKET
Fast Intake OHC Lift Rule & RPM Limited — 31.5mm Bucket, .748" BCR. Can be used with Hydraulic Bucket and zero lash
or with Solid Bucket and .005" to .010" lash.
Camshaft Type
Lobe #
Rated
Duration
Duration in
Degrees
Duration in
Degrees
Lobe
Lift
@ .010
@ .020
@ .050
@ .200
19712
284
274
261
243
186
.497
PDI 31.5 Int.
Rated Duration @ 19713
288
278
265
247
190
.497
.006" Tappet Lift 19714
292
282
269
251
194
.497
Tappet Lift
@ TDC
106°
.129
.140
.150
110°
.108
.118
.129
PDX EXHAUST − LIMITED RPM OHC 31.5mm BUCKET
Exhaust OHC Lift Rule & RPM Limited —
­ 31.5mm Bucket, .748" BCR. Can be used with Hydraulic Bucket and zero lash or
with Solid Bucket and .005" to .010" lash.
Camshaft Type
Lobe #
Rated
Duration
PDX 31.5 Exh.
Rated Duration @
.006" Tappet Lift
19717
19718
19719
@ .006
293
297
301
Duration in
Degrees
@ .010
279
283
287
@ .020
263
267
271
Duration in
Degrees
@ .050
244
248
252
@ .200
187
191
195
Lobe
Lift
.496
.496
.496
W W W . C O M P C A M S . C O M
Tappet Lift
@ TDC
106°
.132
.142
.153
110°
.110
.121
.132
119
OH CAM (DIRECT ACTING)
OH CAM (DIRECT ACTING)
OVH INTAKE 38−40mm BUCKET
These are based on the OHRX Series and maximized for .500" + BCR and 38mm or larger buckets.
Camshaft Type
Lobe #
Rated
Duration
OVH 38+ Int.
Rated Duration @
.020" Tappet Lift
9418
9419
9420
296
300
304
Duration in
Degrees
@ .050
276
280
284
Tappet Lift
@ TDC
Lobe
Lift
@ .200
223
227
231
106°
.238
.251
.264
0.645
0.660
0.675
110°
.212
.225
.238
114°
.187
.200
.212
XCO EXHAUST 35−40mm BUCKET
These are based on an exhaust series that is similar to the OVH intakes but with softer ramps. Will work with 35mm
or larger buckets.
Camshaft Type
Lobe #
Lobe #
XCO 35+ Exh.
Rated Duration @
.020" Tappet Lift
9423
9424
9425
304
308
312
Duration in
Degrees
@ .050
276
280
284
Tappet Lift
@ TDC
Lobe
Lift
@ .200
216
220
224
106°
.211
.223
.236
0.600
0.610
0.620
110°
.188
.200
.212
114°
.164
.176
.188
OVH INTAKE 38−40mm BUCKET
These lobes are similar to the XCO 35 Series but optimized for 38mm or larger buckets and have more lift.
Camshaft Type
XCO 38+ Int.
Rated Duration @
.020" Tappet Lift
Lobe #
Rated
Duration
9444
9445
9446
310
314
318
Duration in
Degrees
@ .050
282
286
290
Tappet Lift
@ TDC
Lobe
Lift
@ .200
224
228
232
106°
.238
.251
.264
.640
.650
.660
110°
.212
.225
.238
114°
.187
.200
.212
THUMPR™ FLATHEAD FORD − DIRECT SOLID 1" TAPPET (CCW ROTATION)
Duration in
Degrees
Camshaft Type
Lobe #
Rated
Duration
Intake
1" Tappet
Direct
19520
19522
19524
@ .010"
267
275
283
@ .050"
227
235
243
Exhaust
1" Tappet
Direct
19531
19533
19535
299
307
315
241
249
257
Lobe Lift
Minimum
Tappet O.D.
Minimum
BCR
@ .200"
160
169
177
.354
.368
.382
1.000
1.000
1.000
.540
.526
.512
151
160
168
.350
.364
.378
1.000
1.000
1.000
.544
.530
.516
• Can also be used in VW applications.
120
1 • 8 0 0 • 9 9 9 • 0 8 5 3
OH CAM (DIRECT ACTING)
The FC Solid designs can be used in many smaller solid lifter applications including OHV, Flathead direct and OHC direct
applications. Requires a minimum .780" tappet face diameter. Rated
Camshaft Type Lobe # Duration
FC
Rated Duration @
.020" Tappet Lift
.780" Min. Dia.
.012" Lash
6703
6704
6705
6706
6707
6708
6709
6710
6711
6712
6713
6714
6715
6716
6717
6718
6730
6720
6724
FC244-1
FC248-1
FC252-1
FC258-1
FC262-1
FC266-1
FC270-1
FC274-1
FC278-1
FC282-1
FC286-1
FC290-1
FC294-1
FC298-1
FC302-1
FC306-1
FC314-1
FC314-2
FC324-2
Duration in
Degrees
@ .050
212
216
220
225
229
232
236
240
244
248
252
256
260
264
268
272
280
280
290
@ .200
102
110
118
122
127
130
135
139
143
146
152
154
160
165
169
173
163
180
188
Lobe
Lift
.250
.260
.270
.280
.285
.290
.300
.300
.310
.310
.320
.320
.330
.330
.340
.340
.300
.350
.350
Tappet Lift
@ TDC
106°
.050
.056
.061
.067
.073
.079
.084
.091
.097
.102
.112
.116
.124
.131
.136
.144
.142
.157
.171
110°
.040
.045
.050
.056
.062
.067
.073
.079
.085
.090
.099
.103
.112
.118
.123
.131
.131
.144
.159
Theoretical Valve Lift @ "0" Lash
Rocker Arm Ratio
1.5
.375
.390
.405
.420
.428
.435
.450
.450
.465
.465
.480
.480
.495
.495
.510
.510
.450
.525
.525
1.6
.400
.416
.432
.448
.456
.464
.480
.480
.496
.496
.512
.512
.528
.528
.544
.544
.480
.560
.560
1.7
.425
.442
.459
.476
.485
.493
.510
.510
.527
.527
.544
.544
.561
.561
.578
.578
.510
.595
.595
OH CAM (DIRECT ACTING)
FC SOLIDS
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W W W . C O M P C A M S . C O M
121
LOBE INDEX
LOBE INDEX
Lobe #
1027
1028
1030
1046
1152
1176
1180
1181
1183
1185
1186
1187
1188
1189
1240
1260
1261
1263
1268
1269
1271
1272
1273
1278
1285
1286
1287
1288
1289
1291
1293
1295
1301
1302
1306
1309
1320
1372
1373
1374
1375
1376
1377
1392
1393
1394
1395
1416
1417
1418
1419
1427
1429
1460
1461
1462
1464
1465
1466
1469
1473
1474
1476
1477
1479
1480
1481
1484
1485
1486
122
Page #
80
80
79
79
81
80
80
102
102
102
80
102
80
102
80
80
81
81
80
81
80
80
81
80
81
80
81
80
81
81
81
80
79
79
81
79
81
85
85
85
85
85
85
55
70
55
70
68
68
68
68
68
68
55
56
55
55
55
55
55
55
53
53
56
55
71
56
81
81
55
Lobe #
1487
1489
1490
1491
1494
1495
1496
1498
1514
1515
1519
1520
1521
1522
1523
1524
1528
1530
1532
1534
1536
1538
1540
1542
1562
1563
1564
1565
1568
1569
1570
1571
1572
1577
1578
1579
1580
1581
1582
1585
1609
1611
1612
1613
1617
1619
1620
1625
1628
1630
1634
1635
1639
1642
1649
1650
1658
1659
1660
1661
1662
1677
1680
1681
1682
1683
1684
1685
1686
1687
Page #
81
81
79
106
81
81
53
53
65
65
67
67
67
67
67
67
67
67
67
67
67
67
67
67
90
90
90
90
89
90
89
90
89
87
87
87
87
87
87
87
55
55
55
55
55
55
55
106
55
55
106
106
55
106
106
106
55
55
71
106
106
55
83
83
83
83
83
83
83
83
Lobe #
1688
1695
1699
1718
1719
1722
1723
1724
1726
1727
1728
1729
1730
1734
1735
1736
1737
1742
1743
1744
1745
1746
1747
1748
1749
1751
1752
1753
1758
1759
1760
1761
1763
1770
1771
1772
1773
1775
1789
1790
1792
1794
1806
1808
1810
1812
1814
1816
1817
1820
1823
1826
1827
1828
1829
1832
1833
1834
1835
1836
1837
1839
1840
1842
1844
1846
1847
1848
1849
1850
Page #
83
89
83
84
84
84
89
84
84
84
84
84
84
89
89
84
84
84
84
84
84
84
84
84
84
82
82
82
82
82
82
82
82
83
83
82
82
90
90
90
90
90
83
83
83
83
83
83
84
84
90
84
84
84
84
84
90
90
90
90
90
83
83
83
83
83
90
90
90
82
Lobe #
1858
1859
1860
1862
1864
1866
1868
1871
1872
1873
1874
1875
1876
1877
1878
1879
1912
1914
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1939
1943
1945
1960
1962
1964
1966
1968
1975
1976
1977
1978
1979
1980
1982
1986
1987
1988
1989
1990
1991
1992
1993
1995
1995
1996
1996
1997
1997
1998
1998
1999
1999
2037
2039
2041
2042
2043
2044
2045
2055
Page #
90
90
82
82
82
82
82
82
82
82
82
82
82
82
82
82
84
84
85
85
85
85
85
85
85
85
85
85
85
87
87
87
82
82
82
82
82
86
86
86
86
86
86
87
87
87
87
87
87
87
87
87
89
103
89
103
89
103
89
103
89
103
88
88
88
88
88
88
88
91
Lobe #
2067
2068
2073
2074
2075
2076
2077
2078
2079
2082
2083
2084
2085
2086
2094
2096
2097
2098
2099
2114
2115
2116
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2138
2139
2140
2162
2163
2164
2165
2166
2167
2169
2171
2195
2196
2198
2199
2201
2202
2203
2208
2209
2210
2214
2215
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
Page #
104
104
104
104
104
104
104
91
91
104
104
104
104
104
104
105
105
105
105
105
105
105
27
27
27
27
27
27
27
27
27
27
27
27
27
105
105
105
104
104
104
104
104
104
104
104
75
75
75
75
75
75
75
72
72
72
74
74
71
71
71
71
71
71
71
71
71
71
71
71
1 • 8 0 0 • 9 9 9 • 0 8 5 3
Lobe #
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2265
2267
2273
2274
2275
2276
2277
2278
2279
2280
2281
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2314
2315
2318
2369
2380
2381
2383
2384
2385
2385
2387
2390
2391
2392
2393
2399
2419
2420
2430
2486
2488
2489
2490
2492
Page #
71
71
71
71
74
74
74
74
74
74
74
74
74
74
75
75
75
75
75
75
75
75
75
75
75
74
74
74
74
74
74
74
74
74
74
74
88
88
88
88
88
88
88
88
59
88
59
59
59
96
74
74
96
96
89
102
88
88
88
88
88
88
101
101
101
61
61
62
62
62
LOBE INDEX
Page #
62
65
65
65
65
65
65
65
65
65
65
65
65
65
65
77
77
77
77
77
77
77
77
77
77
73
73
73
73
73
73
73
73
73
73
77
77
77
77
77
77
76
76
91
91
91
91
91
76
76
89
102
89
102
89
102
89
102
76
68
68
68
68
68
68
68
89
89
89
89
Lobe #
2728
2735
2881
2882
2885
2906
2907
2908
2909
2950
2952
2953
2954
2958
2962
2963
2964
2965
2978
2979
2980
2981
2982
2983
2984
2985
2989
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3024
3026
3028
3030
3031
3033
3034
3035
3036
3037
3038
3039
3040
3041
3043
3045
3047
3050
3051
3052
3053
3056
Page #
89
59
64
64
64
68
68
68
68
63
63
63
63
63
64
64
64
64
63
63
63
63
63
64
64
64
64
19
19
18
18
19
19
19
19
18
18
19
19
19
19
19
19
19
19
19
19
16
16
16
16
19
16
19
19
19
19
19
19
20
20
20
16
16
16
15
15
15
15
16
Lobe #
3058
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3122
3150
3151
3152
3160
3161
3162
3163
3164
3168
3170
3171
3188
3190
3192
3194
3196
3207
3282
3283
3284
3285
3286
3287
3288
3289
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
Page #
16
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
17
17
17
17
17
70
30
30
30
30
31
31
31
31
30
30
30
30
30
17
17
17
18
17
17
18
18
18
18
17
17
17
17
17
17
17
Lobe #
3317
3318
3319
3322
3323
3324
3326
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3354
3355
3356
3357
3358
3359
3362
3363
3364
3370
3371
3372
3373
3374
3375
3376
3377
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3404
3405
3410
3411
3414
3415
3447
3473
Page #
17
17
17
17
17
18
18
31
31
31
31
31
31
30
30
30
30
30
17
17
17
17
17
17
17
17
17
18
22
22
22
22
22
22
22
22
22
23
23
23
23
23
23
23
23
30
30
30
30
30
31
30
30
30
30
30
30
30
30
30
30
30
30
31
23
23
18
18
23
23
Lobe #
3474
3475
3479
3496
3497
3498
3528
3532
3534
3536
3538
3541
3543
3545
3547
3552
3554
3556
3561
3563
3565
3567
3576
3578
3579
3580
3582
3584
3585
3586
3588
3590
3591
3592
3595
3596
3597
3604
3605
3606
3608
3609
3610
3611
3611
3612
3613
3628
3630
3632
3633
3634
3635
3636
3637
3638
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3666
3667
Page #
23
23
23
30
30
30
16
16
16
16
16
16
16
17
17
16
16
16
32
17
17
17
32
32
32
32
33
33
33
33
33
16
16
16
16
16
16
16
16
16
16
16
18
16
18
18
18
18
18
18
18
18
18
18
18
18
24
24
24
24
24
24
24
24
24
24
24
24
24
24
W W W . C O M P C A M S . C O M
Lobe #
3668
3669
3670
3671
3672
3673
3674
3675
3676
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3734
3735
3750
3751
3752
3753
3754
3755
3756
3757
3766
3767
3809
3810
3816
3817
3818
3819
3822
3823
3824
3825
3826
3827
3832
3833
3834
3835
4000
4001
4002
Page #
24
25
25
25
25
25
25
25
25
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
31
24
24
24
24
24
24
24
24
24
24
24
33
33
33
33
33
33
33
33
33
33
33
33
33
33
33
33
55
57
53
LOBE INDEX
Lobe #
2494
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2531
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2551
2555
2557
2559
2560
2570
2571
2577
2578
2579
2580
2581
2582
2583
2586
2586
2587
2587
2588
2588
2589
2589
2591
2688
2689
2690
2691
2692
2693
2694
2724
2725
2726
2727
123
LOBE INDEX
LOBE INDEX
Lobe #
4003
4004
4005
4006
4007
4008
4009
4013
4015
4016
4017
4018
4019
4020
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4034
4035
4045
4046
4047
4049
4050
4051
4052
4053
4055
4056
4057
4058
4059
4062
4063
4064
4065
4066
4067
4068
4070
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4085
4087
4091
4107
4118
4119
4121
4123
4124
4126
4127
4128
124
Page #
56
57
56
57
56
57
57
57
57
57
57
57
56
57
57
56
57
55
57
56
57
56
57
57
57
55
55
56
56
56
56
81
81
81
81
81
81
81
56
55
55
79
81
71
55
81
79
71
81
70
70
70
70
70
70
70
70
106
79
55
79
79
79
70
57
57
57
57
57
57
Lobe #
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4160
4162
4163
4164
4165
4166
4167
4168
4176
4178
4180
4181
4182
4183
4184
4185
4186
4196
4198
4199
4205
4206
4207
4208
4209
4210
4211
4213
4214
4216
4217
4220
4221
4240
4241
4242
4243
4244
4245
4247
4248
4252
4253
4254
4260
4261
4262
4264
Page #
57
57
57
57
57
57
57
57
57
57
57
58
58
58
58
58
58
58
58
58
58
58
58
58
58
58
58
58
58
58
66
66
66
66
66
66
66
66
66
65
64
65
56
56
56
56
56
56
56
70
70
70
70
53
53
70
70
55
70
55
70
81
106
70
70
70
59
59
59
59
Lobe #
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4276
4277
4278
4279
4283
4284
4285
4286
4287
4293
4294
4295
4296
4301
4302
4303
4304
4305
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4321
4327
4328
4329
4340
4341
4345
4346
4347
4348
4349
4358
4359
4361
4362
4363
4364
4365
4366
4367
4368
4370
4371
4372
4373
4374
4375
4376
4377
4378
Page #
59
59
59
59
59
59
59
59
59
59
59
59
59
59
59
59
59
59
59
59
59
59
59
61
61
61
61
61
61
61
61
61
61
61
61
61
61
61
61
61
64
64
64
64
61
61
61
61
61
61
61
64
64
64
64
64
64
65
65
65
65
65
65
65
65
65
65
65
65
65
Lobe #
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4402
4404
4405
4406
4407
4408
4409
4416
4418
4421
4422
4423
4424
4427
4428
4429
4430
4431
4432
4433
4436
4438
4445
4447
4449
4451
4480
4482
4483
4484
4485
4486
4572
4573
4574
4575
4576
4600
4601
4609
4610
4611
4612
4613
4614
4614
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4627
4628
4639
4640
Page #
61
61
61
61
61
61
61
61
62
62
63
63
63
63
63
63
63
63
63
68
68
68
68
62
62
62
62
62
62
62
62
62
62
62
62
62
71
71
71
71
71
71
67
67
67
67
67
56
56
66
66
66
66
66
67
67
67
67
67
67
67
67
67
67
67
67
67
67
66
66
Lobe #
4641
4642
4643
4682
4683
4684
4685
4686
4687
4784
4785
4788
4789
4793
4814
4815
4816
4817
4818
4819
4820
4821
4822
4823
4824
4826
4827
4830
4831
4837
4838
4839
4840
4841
4842
4850
4851
4852
4853
4854
4855
4856
4857
4858
4859
4860
4861
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
4884
4886
4888
4894
4896
4898
5000
5002
5006
5020
5022
5024
5031
Page #
66
66
66
62
62
62
62
62
62
66
66
66
66
65
62
62
62
62
63
63
63
63
63
63
63
63
63
66
66
64
64
64
64
64
64
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
10
10
10
10
10
10
11
1 • 8 0 0 • 9 9 9 • 0 8 5 3
Lobe #
5033
5035
5040
5042
5044
5055
5057
5059
5066
5067
5068
5069
5070
5071
5082
5083
5084
5085
5086
5087
5088
5089
5090
5101
5103
5105
5107
5109
5127
5128
5128
5129
5130
5135
5146
5163
5166
5190
5195
5196
5197
5198
5199
5200
5201
5201
5202
5202
5203
5203
5204
5205
5205
5206
5207
5207
5208
5208
5209
5209
5210
5210
5211
5212
5212
5213
5214
5214
5215
5216
Page #
11
11
10
10
10
11
11
11
11
11
11
11
11
11
13
13
13
13
13
13
13
13
13
13
13
13
13
13
10
10
10
10
10
10
10
10
10
33
12
12
12
12
12
9
9
13
9
13
9
13
9
9
13
9
9
13
9
13
9
13
9
13
9
9
13
9
9
13
9
9
LOBE INDEX
Page #
13
9
12
9
9
9
9
9
9
13
13
9
13
13
13
13
9
9
9
10
10
10
10
10
10
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
10
10
10
11
11
11
42
42
42
42
40
40
40
40
40
40
40
40
40
40
40
40
40
40
Lobe #
5656
5657
5658
5659
5661
5662
5663
5664
5665
5666
5667
5668
5669
5670
5676
5677
5678
5679
5680
5681
5682
5683
5684
5685
5686
5692
5694
5695
5696
5697
5698
5704
5708
5713
5714
5715
5718
5719
5720
5744
5746
5820
5822
5824
5831
5833
5835
5840
5846
5854
5862
5960
5961
5962
5964
5965
5966
5980
5981
5984
5985
5986
6000
6001
6002
6003
6004
6005
6006
6007
Page #
40
40
40
40
41
41
40
40
41
40
40
40
40
40
41
41
41
41
41
41
41
41
41
41
41
40
40
40
40
40
40
40
40
41
41
41
40
40
40
40
40
11
11
11
11
11
11
42
42
42
42
14
14
14
14
14
14
14
14
14
14
14
35
35
34
34
35
35
35
34
Lobe #
6009
6010
6011
6012
6013
6014
6015
6016
6017
6018
6019
6027
6028
6029
6030
6031
6032
6033
6034
6035
6036
6038
6052
6053
6054
6055
6056
6057
6059
6061
6068
6069
6070
6071
6083
6084
6089
6091
6114
6129
6130
6131
6132
6133
6134
6157
6158
6159
6160
6161
6162
6163
6164
6165
6166
6167
6168
6169
6170
6172
6173
6174
6192
6193
6194
6195
6196
6197
6198
6199
Page #
35
35
35
35
35
35
35
35
34
35
35
35
35
35
35
35
35
35
35
35
35
33
34
34
34
34
34
34
34
34
34
34
34
34
34
34
34
34
33
52
52
52
52
52
52
38
38
38
38
38
38
38
38
38
38
38
38
38
38
38
38
41
41
41
41
41
41
41
41
41
Lobe #
6200
6208
6209
6210
6211
6212
6213
6214
6215
6216
6217
6218
6219
6222
6224
6225
6226
6229
6231
6232
6234
6235
6237
6238
6239
6240
6241
6242
6243
6244
6245
6246
6247
6249
6250
6251
6252
6253
6254
6255
6256
6258
6259
6260
6261
6262
6263
6264
6265
6266
6267
6268
6269
6270
6275
6276
6277
6280
6281
6282
6283
6284
6285
6286
6289
6301
6302
6303
6304
6305
Page #
41
39
39
39
39
39
39
39
39
39
39
39
39
39
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
42
42
42
42
42
42
42
36
37
37
37
37
37
37
37
37
37
37
37
37
36
36
36
42
42
42
42
42
42
42
42
36
36
36
36
36
Lobe #
6306
6307
6308
6310
6312
6313
6314
6330
6331
6332
6333
6334
6335
6336
6400
6402
6404
6406
6408
6410
6412
6414
6416
6418
6420
6579
6580
6581
6582
6583
6584
6585
6586
6587
6588
6589
6590
6591
6610
6611
6612
6703
6704
6705
6706
6707
6708
6709
6710
6711
6712
6713
6714
6715
6716
6717
6718
6720
6724
6730
6780
6782
6784
6786
6788
6800
6801
6802
6803
6804
Page #
36
36
36
36
36
36
36
36
36
36
36
36
36
36
37
37
37
37
37
37
37
37
37
37
37
53
53
53
53
53
53
53
53
53
53
53
53
53
52
52
52
121
121
121
121
121
121
121
121
121
121
121
121
121
121
121
121
121
121
121
43
43
43
43
43
116
116
116
116
116
W W W . C O M P C A M S . C O M
Lobe #
6805
6806
6807
6808
6882
6883
6884
6885
6886
6887
7015
7016
7020
7021
7022
7023
7028
7037
7038
7039
7040
7041
7042
7043
7044
7049
7068
7069
7071
7072
7073
7074
7075
7077
7078
7084
7085
7086
7087
7110
7113
7114
7115
7116
7117
7118
7120
7121
7122
7123
7124
7125
7127
7130
7131
7132
7133
7134
7135
7136
7158
7159
7160
7161
7162
7163
7164
7165
7166
7168
Page #
116
116
116
116
14
14
14
14
14
14
45
45
48
48
48
48
48
48
48
48
48
48
48
48
48
48
46
46
46
46
46
47
47
47
47
48
48
48
48
46
46
46
46
46
46
46
48
48
48
48
48
47
47
44
44
44
44
44
47
46
45
45
45
45
45
45
45
45
45
45
LOBE INDEX
Lobe #
5216
5217
5221
5222
5223
5224
5225
5226
5229
5230
5231
5232
5232
5233
5234
5238
5239
5240
5241
5310
5311
5312
5315
5326
5327
5414
5418
5419
5430
5431
5432
5433
5435
5437
5438
5439
5440
5441
5442
5443
5444
5445
5446
5447
5448
5449
5520
5522
5524
5531
5533
5535
5538
5540
5544
5546
5550
5553
5643
5644
5645
5646
5647
5649
5650
5651
5652
5653
5654
5655
125
LOBE INDEX
LOBE INDEX
Lobe #
7169
7170
7171
7172
7174
7185
7175
7186
7176
7187
7177
7188
7178
7193
7194
7203
7204
7205
7206
7207
7208
7250
7260
7261
7262
7263
7265
7266
7267
7353
7354
7355
7356
7357
7358
7359
7362
7363
7364
7365
7366
7367
7368
7380
7381
7382
7383
7384
7385
7386
7387
7388
7389
7393
7394
7395
7396
7399
7404
7405
7406
7408
7409
7411
7412
7413
7414
7415
7416
126
Page #
45
45
45
45
45
45
45
45
45
45
45
45
45
45
45
50
50
50
50
50
50
44
44
44
44
44
44
44
44
47
47
47
47
47
47
47
47
47
47
48
48
48
48
47
47
47
47
47
47
47
47
47
47
44
44
44
47
47
44
44
44
44
44
44
44
44
44
44
44
Lobe #
7665
7666
7667
7668
7669
7670
7671
8006
8007
8008
8022
8023
8024
8025
8026
8064
8066
8090
8096
8098
8250
8251
8252
8253
8254
8255
8260
8261
8262
8304
8306
8312
8314
8316
8325
8327
8360
8362
8364
8366
8410
8411
8412
8413
8414
8420
8421
8422
8423
8424
8430
8432
8434
8436
8440
8442
8444
8552
8553
8554
8555
8556
8560
8564
8566
8568
8590
8592
8594
Page #
49
49
49
49
49
49
49
112
112
112
112
112
112
112
112
112
112
112
112
112
114
114
114
114
114
114
115
115
115
112
112
112
112
112
112
112
113
113
113
113
113
113
113
113
113
113
113
113
113
113
115
115
115
115
115
115
115
113
113
113
113
113
116
116
116
116
116
116
116
Lobe #
8596
8598
8735
8736
8737
8738
8739
8740
8741
8742
8745
8746
8754
8755
8756
8757
8758
8759
8760
8761
8762
8763
8766
8767
8770
8771
8780
8781
9013
9014
9015
9042
9044
9045
9046
9048
9072
9073
9074
9086
9087
9090
9091
9092
9093
9094
9095
9096
9102
9103
9104
9105
9108
9109
9116
9117
9118
9122
9124
9126
9127
9128
9132
9133
9134
9135
9141
9146
9147
Page #
116
116
114
114
114
114
114
114
114
114
114
114
113
114
113
114
113
114
113
114
113
114
114
114
114
114
114
114
117
117
117
116
116
116
116
116
117
117
117
117
117
117
117
117
117
117
117
117
117
117
117
117
117
117
118
118
118
117
117
118
118
118
118
118
118
118
117
118
118
Lobe #
9148
9158
9159
9160
9161
9162
9185
9163
9186
9164
9187
9165
9188
9192
9193
9194
9195
9234
9236
9237
9238
9239
9240
9241
9242
9243
9244
9245
9246
9247
9248
9251
9252
9254
9256
9257
9258
9259
9260
9266
9267
9268
9269
9270
9271
9272
9273
9283
9284
9291
9292
9293
9294
9295
9296
9297
9298
9299
9300
9301
9302
9303
9304
9306
9307
9310
9311
9312
9313
Page #
118
46
46
46
46
46
45
45
45
45
45
45
45
45
45
45
45
109
109
109
109
109
106
106
106
106
106
106
109
109
109
109
109
107
107
107
107
107
107
107
107
107
107
107
107
107
107
108
108
107
107
107
107
107
107
107
108
108
108
108
108
108
108
108
108
108
108
108
108
Lobe #
9314
9315
9320
9321
9322
9323
9324
9325
9341
9342
9343
9344
9345
9346
9360
9361
9362
9363
9364
9365
9366
9367
9368
9369
9370
9371
9373
9374
9375
9376
9377
9384
9385
9386
9387
9388
9389
9418
9419
9420
9423
9424
9425
9444
9445
9446
9602
9603
9604
9605
9606
9608
9631
9632
9633
9635
9636
9637
9638
9639
9709
9710
9711
9712
9713
9714
9771
9772
9773
Page #
108
108
107
107
107
107
107
107
107
107
107
107
107
107
49
49
49
49
49
49
49
49
49
49
49
108
108
49
49
49
49
46
46
46
46
46
46
120
120
120
120
120
120
120
120
120
51
51
51
51
51
51
51
51
51
51
51
51
51
51
50
50
50
50
50
50
50
50
50
1 • 8 0 0 • 9 9 9 • 0 8 5 3
Lobe #
9829
9830
9831
9832
9833
9834
9835
9837
11080
11081
11082
11083
11084
11090
11091
11092
11093
11094
11124
11126
11128
11130
11132
11145
11147
11149
11151
11153
11230
11231
11232
11236
11258
11259
11260
11261
11262
11263
11265
11268
11268
11269
11269
11270
11270
11271
11271
11272
11272
11277
11278
11279
11282
11283
11284
11288
11302
11304
11306
11308
11310
11312
11314
11340
11342
11344
11346
11348
11352
Page #
52
52
52
52
52
52
52
52
97
97
97
97
97
97
97
97
97
97
85
85
85
85
85
85
85
85
85
85
99
99
99
99
98
98
98
98
98
98
98
99
102
99
102
99
102
99
102
99
102
103
103
103
100
100
100
102
92
92
92
92
92
92
92
92
92
92
92
92
99
LOBE INDEX
Page #
99
99
60
60
60
60
60
60
60
60
60
86
86
86
86
86
86
86
86
79
79
79
79
79
79
79
88
88
88
88
88
98
98
98
98
98
73
73
73
101
101
101
101
101
101
76
76
76
29
29
29
29
29
100
100
100
100
73
73
73
30
30
30
30
30
77
77
77
77
Lobe #
12178
12180
12181
12182
12185
12188
12190
12192
12194
12196
12198
12199
12200
12201
12202
12203
12204
12205
12206
12207
12208
12214
12215
12216
12217
12218
12219
12220
12221
12222
12223
12224
12225
12226
12227
12228
12229
12230
12232
12234
12254
12255
12256
12257
12258
12294
12295
12296
12297
12298
12303
12304
12305
12306
12307
12314
12315
12316
12317
12318
12322
12324
12330
12331
12332
12333
12334
12338
12339
Page #
77
77
77
77
72
72
72
72
73
73
72
72
72
72
72
72
72
72
72
72
72
94
94
94
94
95
95
95
95
95
95
95
95
95
95
95
95
73
73
73
94
94
94
94
94
101
101
101
101
101
79
79
79
79
79
102
102
102
102
102
79
79
100
100
100
100
100
92
92
Lobe #
12341
12342
12343
12344
12367
12367
12368
12368
12369
12369
12374
12376
12378
12380
12382
12384
12386
12387
12387
12388
12389
12390
12391
12392
12398
12398
12399
12401
12402
12402
12403
12403
12404
12406
12410
12416
12417
12418
12419
12420
12421
12422
12423
12424
12425
12426
12428
12429
12430
12431
12432
12433
12434
12435
12436
12437
12439
12441
12443
12444
12445
12446
12447
12448
12449
12450
12451
12455
12456
Page #
99
99
99
99
99
103
99
103
99
103
78
78
78
78
78
78
91
99
103
103
103
101
101
101
95
103
99
103
95
103
95
103
72
72
72
92
92
92
92
92
92
92
92
92
92
92
92
92
92
92
92
92
92
92
92
93
93
93
93
93
93
93
93
93
93
93
93
93
93
Lobe #
12457
12458
12459
12460
12461
12462
12463
12467
12470
12471
12472
12474
12475
12476
12478
12480
12482
12483
12484
12485
12486
12488
12488
12489
12489
12490
12490
12500
12502
12504
12506
12508
12510
12522
12524
12526
12527
12528
12530
12537
12538
12539
12540
12541
12542
12543
12544
12545
12546
12547
12548
12549
12550
12551
12552
12554
12556
12558
12560
12564
12566
12568
12570
12572
12574
12576
12578
12580
12590
Page #
93
93
93
93
93
93
93
96
93
93
93
96
96
86
86
86
86
86
86
86
86
95
100
95
100
95
100
69
69
69
69
69
69
69
69
69
69
69
69
32
97
97
69
97
97
69
97
97
97
97
97
97
69
97
69
69
69
69
69
69
69
69
69
69
69
69
69
69
97
Lobe #
12600
12602
12604
12605
12606
12607
12608
12610
12611
12612
12614
12616
12618
12619
12620
12621
12623
12624
12625
12626
12629
12630
12632
12634
12636
12638
12642
12644
12646
12648
12649
12650
12652
12654
12655
12656
12657
12658
12662
12664
12668
12670
12672
12674
12676
12678
12680
12682
12684
12686
12688
12689
12690
12692
12694
12696
12698
12700
12702
12704
12706
12708
12710
12711
12712
12713
12718
12719
12722
Page #
29
29
78
97
97
97
29
29
98
29
29
29
29
97
97
97
98
98
98
98
97
29
29
29
30
30
29
29
29
78
78
78
78
78
31
31
31
31
32
78
28
28
28
28
28
28
28
29
29
29
31
31
29
29
29
29
29
29
29
29
31
31
31
31
31
31
31
31
94
W W W . C O M P C A M S . C O M
Lobe #
12723
12724
12725
12726
12727
12728
12731
12733
12735
12736
12748
12749
12750
12751
12752
12753
12754
12776
12778
12795
12796
12797
12804
12805
12806
12807
12808
12823
12825
12827
12829
12831
12833
12835
12837
12839
12842
12843
12844
12846
12848
12850
12851
12852
12854
12856
12858
12864
12866
12868
12874
12876
12878
12907
12908
12909
12910
12914
12915
12916
12917
12918
12919
12922
12951
12952
12953
12954
12955
Page #
94
94
94
94
94
94
93
93
93
93
78
78
78
78
78
78
78
94
94
98
98
98
96
96
96
96
96
91
91
91
91
91
91
91
91
91
94
94
94
29
29
94
94
94
28
28
28
29
29
29
29
29
29
78
78
78
78
32
32
31
31
31
31
32
96
96
96
96
96
LOBE INDEX
Lobe #
11353
11354
11460
11462
11464
11466
11468
11470
11472
11474
11476
11890
11891
11892
11902
11903
11904
11906
11908
11918
11919
11920
11922
11924
11926
11928
11975
11976
11977
11978
11979
12044
12045
12046
12047
12048
12050
12052
12054
12066
12067
12068
12072
12073
12074
12100
12102
12103
12104
12106
12108
12110
12112
12114
12116
12117
12118
12129
12131
12133
12134
12136
12138
12140
12142
12172
12174
12176
12177
127
LOBE INDEX
LOBE INDEX
Lobe #
13013
13014
13015
13016
13017
13018
13019
13020
13021
13022
13023
13024
13025
13026
13027
13028
13029
13041
13045
13047
13048
13050
13051
13052
13053
13054
13056
13057
13064
13065
13066
13067
13068
13069
13070
13071
13072
13074
13075
13080
13081
13082
13083
13084
13085
13086
13087
13088
13089
13090
13093
13094
13095
13096
13097
13099
13130
13131
13132
13133
13134
13135
13136
13137
13138
13139
13140
13141
13142
128
Page #
26
26
26
26
26
26
26
26
26
26
26
26
26
26
26
26
26
26
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
32
32
32
23
23
19
19
19
19
19
19
19
19
19
19
19
26
26
26
26
26
26
19
19
19
19
19
19
19
19
19
19
19
19
19
Lobe #
13143
13144
13145
13146
13147
13148
13155
13156
13157
13158
13159
13160
13161
13162
13163
13164
13165
13166
13167
13168
13169
13170
13180
13181
13182
13183
13184
13299
13300
13301
13302
13303
13304
13305
13306
13307
13310
13311
13312
13313
13314
13315
13316
13317
13318
13440
13441
13442
13443
13444
13445
13446
13447
13448
13449
13450
13451
13452
13453
13454
13455
13456
13457
13458
13459
13460
13470
13471
13472
Page #
19
19
20
20
20
20
26
26
26
26
26
26
26
26
26
27
27
27
27
27
27
27
27
27
27
27
27
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
Lobe #
13473
13474
13475
13476
13477
13478
13479
13480
13481
13482
13483
13484
13485
13486
13487
13488
13489
13490
13491
13492
13540
13541
13542
13543
13544
13545
13546
13547
13548
13549
13550
13551
13552
13553
13554
13555
13556
13557
13558
13570
13571
13572
13573
13574
13575
13576
13577
13578
13579
13580
13581
13582
13583
13584
13585
13586
13587
13588
13600
13602
14004
14006
14008
14013
14040
14042
14044
14154
14155
Page #
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
31
32
76
76
76
76
103
103
103
105
105
Lobe #
14156
14157
14158
14164
14165
14166
14167
14168
14502
14504
14506
14508
16188
16200
16202
16203
16204
16206
16208
16210
16212
16214
16216
16218
16220
16222
16226
16230
16231
16234
16235
16236
16237
16246
16248
16258
16259
16260
16261
16262
16263
16264
16265
16266
16267
16268
17238
17239
17240
17241
17242
17244
17245
17246
17248
17382
17525
17537
17538
17549
17570
17572
17574
17576
17600
17605
19194
19202
19203
Page #
105
105
105
106
106
106
106
106
74
74
74
74
43
43
43
43
43
43
43
43
43
43
43
43
43
43
38
38
38
38
38
38
38
38
38
37
37
37
37
37
37
37
37
37
37
37
51
51
51
51
51
51
51
51
51
50
50
50
50
50
50
50
50
50
50
50
110
110
110
Lobe #
19204
19205
19207
19209
19213
19214
19215
19216
19221
19223
19225
19235
19236
19240
19242
19244
19246
19251
19253
19254
19255
19256
19258
19262
19263
19264
19265
19266
19267
19268
19269
19272
19273
19274
19275
19276
19277
19278
19279
19280
19291
19292
19293
19294
19295
19296
19297
19298
19299
19300
19301
19305
19306
19307
19314
19315
19370
19380
19400
19402
19404
19409
19411
19413
19520
19522
19524
19531
19533
Page #
110
110
110
110
110
110
110
110
110
110
110
108
108
110
110
110
110
110
110
110
110
110
110
109
109
109
109
109
109
109
109
109
109
109
109
109
109
109
109
109
107
107
108
108
107
107
108
108
108
108
108
107
107
107
108
108
109
109
110
110
110
110
110
110
120
120
120
120
120
1 • 8 0 0 • 9 9 9 • 0 8 5 3
Lobe #
19535
19554
19556
19558
19564
19565
19566
19567
19568
19569
19578
19582
19583
19584
19592
19593
19594
19595
19608
19615
19701
19702
19703
19704
19705
19706
19707
19708
19712
19713
19714
19717
19718
19719
20515
20519
20520
20521
20522
20525
20527
20535
5110A
5120A
5126A
5136A
8202-8203
8204-8205
8206-8207
8216-8217
8218-8219
8232-8233
8234-8235
8236-8237
8240-8241
8242-8243
8374-8375
8376-8377
8380-8381
8382-8383
8384-8385
8386-8387
Page #
120
111
111
111
111
111
111
111
111
111
111
111
111
111
111
111
111
111
111
111
119
119
119
119
119
119
119
119
119
119
119
119
119
119
60
60
60
60
60
60
60
60
10
10
10
10
115
115
115
115
115
115
115
115
115
115
112
112
112
112
113
113
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TABLE OF CONTENTS
TABLE OF CONTENTS
Your Valve Train Technology Partner
For over 35 years the world's elite motorsports teams and engine builders have turned to COMP
Cams® for advanced cam design technology and product manufacturing. As the aftermarket industry's foremost leader in camshaft and valve train study, COMP Cams® has evolved into a "think tank"
that has given birth to countless innovations that have advanced an entire industry.
The secret to this unprecedented success is an enduring commitment for pushing beyond current
limitations to define the technology of tomorrow. COMP Cams® employs the automotive aftermarket
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and what was once impossible becomes yesterday's limitations.
Part # LC2013
Allow the extraordinary resources of COMP Cams® to solve your next valve train product or technology challenge. With the industry's widest variety of cutting edge cam lobe designs and the ability to
create a custom grind for virtually any application, COMP Cams® is standing by and ready to be your
valve train technology partner.
COMP Cams®
3406 Democrat Rd. • Memphis, TN 38118
Phone: 901.795.2400 • Toll Free: 1.800.999.0853
Fax: 901.366.1807
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