stock chevy cams, and a few similar aftermarket

grumpyvette

Administrator
Staff member
http://www.kendrick-auto.com/chevrolet_ ... m_spec.htm
If your ordering any cam, be very sure you explain what year block and what cylinder heads will be used as there are differences in the cams. between early and later SBC, block s and the cams they require,and on big blocks theres similar issues, a mark VI cam is different from a MARK IV cam

Chevrolet Factory Cam Specs
Chevrolet Factory Cam Specs by part number
Part # Lifter type–duration at .050 In/ex–Lift in/ex–centerline–description
Small Blocks
3849346 Mechanical – 254/254 – .484/.484 – 114 – 327 365HP& Z-28 302
3863151 Hyd. – 221/221-.447/.447-114 – 327-350HP, L79
3896929 Hyd. – 195/202 – .390/.410 – 112 – 327 300 HP
3896962 Hyd. – 222/222 – .450/.460 – 114 – 350 L-46, L-82
3927140 Mechanical – 257/269 – .493/.512 – 112 – Off Road
3965724 Mechanical – 262/273 – .488/.509 – 112 – 2nd design road race, short track
3972178 ?
3972182 Mechanical – 242/254 – .459/.485 – 116 – 70 LT1 360 & 370HP, 71 LT 330 HP
10134334 Hyd. Roller – 235/235 – .480/.480 – 114 – 350ZZZ and ZZ2 Crate Motor
10185071 Hyd. Roller – 208/221 – .474/.474 – 112 – 350 345, ZZ3&4 Crate Motor
10224241 Hyd. Roller – – 92-94 GenII, LT1, 350
10243779 Hyd. Roller – – 94-96 Gen II, L99 265 V-8
12353914 Hyd. – 180/194 – .378/.401 – – GM Crane Lo speed Hi torque
12353915 Hyd. – 194/204 – .401/.423 – 104 – GM Crane street
12353916 Hyd. – 204/214 – .423/.446 – 110 – GM Crane 305-350 street legal 50 states
12353917 Hyd. – 204/214 – .420/.441 – 112 – GM Crane nan-emissions vehicles & off road
12353918 Hyd. – 214/224 – .442/.465 – 112 – GM Crane marine & off road
12353923 Hyd. – 224/234 – .465/.448 – 114 – GM Crane off road
12364050 ?
12364051 ?
12364052 ?
12364053 ?
12364054 ?
12370845 Hyd. Roller – 214/224 – .488/.509 – 112 – Off Road, lobe for mech fuel pump
12370846 Hyd. Roller – 222/230 – .509/.528 – 112 – Off Road, lobe for mech fuel pump
12370847 Hyd. Roller – 232/242 – .539/.558 – 112 – Off Road, lobe for mech fuel pump
12551142 Hyd. Roller – 203/210 – .476/.480 – 115.5 – 96 350 LT4 w1.6 roller rockers
12551705 Hyd. Roller – 201/208 – .447/.459 – 112 – 95-96 Gen II, LT1, w center dowel pin
14088843 Hyd. – 202/206 – .403/.415 – 115 – 305 HO, 83-86
14093643 Hyd. Roller – 202/206 – .403/.415 – 115 – 87 350 Corvette, IROC Camaro
24502476 Hyd. – 121/220 – .435/.460 – 112.5 – 350 300 crate motor
24502586 Hyd. Roller – 218/228 – .525/.525 – – 96 LT4 H.O.T. crate motor, use with 1.6 roller rockers
NA Hyd. Roller – 202/210 – .472/.478 – 111 – 97 Gen III LS1 Corvette 350 uses 1.7 roller rockers
factorycams.png

http://www.nastyz28.com/sbchevy/sbccams.html

Part Number Type DUR @ .050" Lift C/R LSA Usage
14093643 Hyd. Roller 202/206 .403"/.415" 8.5:1 115 '87 350 Corvette and IROC Camaro
10134334 Hyd. Roller 235/235 .480"/.480" 9.0:1 114 350 ZZZ through ZZ2 crate motors
10185071 Hyd. Roller 208/221 .474"/.474" 9.8:1 112 350/345 ZZ3 & ZZ4 crate motor
10224241 Hyd. Roller - - - - '92 to'94 Gen. 11 LT1 350
10243779 Hyd. Roller - - - - '94 to '96 Gen. II L99 265 V-8
12370845 Hyd. Roller 214/224 .488"/.509" - 112 Off-road use, lobe for mech. fuel pump
12370846 Hyd. Roller 222/230 .509"/.528" - 112 Off-road use, lobe for mech. fuel pump
12370847 Hyd. Roller 232/242 .539"/.558" - 112 Off-road use, lobe for mech. fuel pump
125517051 Hyd. Roller 201/208 .447"/.459" 10.4:1 112 '95 to '96 Gen. 11 LT1 350, w/center dowel pin
12551142 Hyd. Roller 203/210 .476"/.480" 10.8:1 115.5 '96 350 LT4 w/1.6:1 roller rockers
24502586 Hyd. Roller 218/228 .525"/.525" 10.8:1 - '96 LT4 H.O.T crate motor cam, use
- - - - - - w/1.6:1 roller rockers.
N/A Hyd. Roller 202/210 .472"/.478" 10.0:1 11 '97 Gen. III LS1 Corvette 350, uses 1.7
- - - - - - roller rockers and Gen. III
- - - - - - tapered valve spring
24502476 Hyd. 212/220 .435"/.460" 9.1:1 112.5 350/300 CC crate motor
14088843 Hyd. 202/206 .403"/.415" 8.5:1 115 '83 to'86 305HO
12364050
3863151 Hyd. 221/221 .447"/.447" 11.0:1 114 327/350HP L-79
12364051
3896929 Hyd. 195/202 .390"/.410" 8.0:1 112 327/300HP
3896962 Hyd. 222/222 .450"/.460" 8.5:1 114 350 L-46, L-82
12353915 Hyd. 194/204 .401"/.423" 8.0:1 104 GM/Crane street
12353914 Hyd. 180/194 .378"/.401" 8.0:1 - GM/Crane very high, low-speed torque
12353923 Hyd. 224/234 .465"/.448" 9.5:1 114 GM/Crane off-road
12353918 Hyd. 214/224 .442"/.465" 8.75:1 112 GM/Crane marine & off-road
12353917 Hyd. 204/214 .420"/.442" 9.0:1 112 GM/Crane non-emissions vehicles & off-road
12353916 Hyd. 204/214 .423"/.446" 8.5:1 110 GM/Crane 50 state legal 305-350
12364052
3849346 Mech. 254/254 .485"/.485" 11.0:1 114 327/365HP & Z-28 302
12364053
3927140 Mech. 257/269 .493"/.512" 12.0:1 112 Off-road
12364054
3972178
3972182 Mech. 242/254 .459"/.485" 11.0:1 116 '70 LT1 360 to 370HP
" " " " 9.0:1 116 71 LT1 330HP
3965724 Mech. 262/273 .488"/.509" 12.5:1 112 2nd design, short track, road race
Key to table:
DUR = Duration, C/R = Compression ratio of engine used in (stock), LSA = Lobe Separation Angle.

http://www.gmpartsdirect.com/performanc ... D=485.html

http://www.chevytech.com/2c40o8.html
chevystcm.png

Quick Reference Charts

Large Cat. Image
Modifier
10186060 Hydraulic Flat Tappet "454"
This hydraulic flat tappet "454" is a good street high-performance and marine cam used in the Gen V 454 H.O. engine P/N 10185058. (Advanced five degrees; use spring P/N 3970627.) The duration at lash point in degrees (intake/exhaust) is 328/324; duration at .050" tappet lift (intake/exhaust) is 220/220; and maximum lift with 1.7:1 rocker ratio (intake/exhaust) is 500/500. Valve lash is zero/zero and lobe centerline is 115 degrees. Small Image
Technical Notes: Distributor P/N 1104067 or melonized distributor gear P/N 10456413 must be used on all crate engines with steel camshafts.
Modifier
12366543 Steel Roller
This steel roller is for 502/502 special engines. (Must use distributor gear P/N 10456413.) The duration at .050" tappet lift (intake/exhaust) is 224/234; and maximum lift with 1.7:1 rocker ratio (intake/exhaust) is 527/544. Valve lash is zero/zero and lobe centerline is 110 degrees. Small Image
Technical Notes: Distributor P/N 1104067 or melonized distributor gear P/N 10456413 must be used on all crate engines with steel camshafts.
Modifier
14096209 Hydraulic Flat Tappet "502"
This hydraulic flat tappet "502" is a good street high-performance and marine cam used in the Gen V 502 H.O. engine P/N 10185085. (Use spring P/N 3970627.) The duration at lash point in degrees (intake/exhaust) is 328/324; duration at .050" tappet lift (intake/exhaust) is 220/220; and maximum lift with 1.7:1 rocker ratio (intake/exhaust) is 500/500. Valve lash is zero/zero and lobe centerline is 115 degrees. Small Image
Technical Notes: Distributor P/N 1104067 or melonized distributor gear P/N 10456413 must be used on all crate engines with steel camshafts.
Modifier
24502611 Steel Roller
This steel roller is for the 502 and 454 H.O. engines. (Must use distributor gear P/N 10456413.) The duration at .050" tappet lift (intake/exhaust) is 211/230; and maximum lift with 1.7:1 rocker ratio (intake/exhaust) is 510/540. Valve lash is zero/zero and lobe centerline is 112 degrees. Small Image
Technical Notes: Distributor P/N 1104067 or melonized distribtor gear P/N 10456413 must be used on all crate engines with steel camshafts.
Modifier
3904362 Mechanical Flat Tappet
This mechanical flat tappet is an LS-6 street mechanical lifter cam. (Use spring P/N 3970627.) The duration at lash point in degrees (intake/exhaust) is 307/298; duration at .050" tappet lift (intake/exhaust) is 242/242; and maximum lift with 1.7:1 rocker ratio (intake/exhaust) is 496/492. Valve lash is .024/.028 and lobe centerline is 114 degrees. Small Image
Technical Notes: Distributor P/N 1104067 or melonized distributor gear P/N 10456413 must be used on all crate engines with steel camshafts.
Modifier
3959180 Mechanical Flat Tappet
This mechanical flat tappet is a ZL-1 and LS-7 mechanical lifter competition cam, good in 427-454. (Use spring P/N 3916164.) The duration at lash point in degrees (intake/exhaust) is 327/333; duration at .050" tappet lift (intake/exhaust) is 262/273; and maximum lift with 1.7:1 rocker ratio (intake/exhaust) is 580/620. Valve lash is .024/.026 and lobe centerline is 110 degrees. Small Image
Technical Notes: Distributor P/N 1104067 or melonized distribuor gear P/N 1045613 must be used on all crate engines with steel camshafts.

http://www.sallee-chevrolet.com/Camshafts/index.cfm

http://www.thirdgen.org/mods3
_________________

1973 Corvette 454 w/LS4 engine.
C.R. = 8.25:1
Horsepower = 275 @ 4400
Torque = 395 @ 2800
__________________________________________

I believe these are the correct camshaft specs, for a 1970 Chevrolet 454 w/LS5.
The duration figures, which are taken at .008-inch lift are 268° int./ 274° exh.
Camshaft number = #3883986
Camshaft Intake duration @ .050" == 214°
Camshaft Exhaust duration @ .050" = 218°
Camshaft lift - Intake == 0.461"
Camshaft lift - Exhaust = 0.480"
@ 115° LSA

1970 Chevrolet 454 w/LS5 engine.
C.R. = 10.25:1
Horsepower = 360 @ 5400
Torque = 500 @ 3200

1970 Chevrolet 402 w/L34 engine.
C.R. = 10.25:1
Horsepower = 350 @ 5200
Torque = 415 @ 3400
__________________________________________

I believe these are the correct camshaft specs, for a 1970 Chevrolet 454 w/LS6.
Camshaft number = #3863148
Camshaft Intake duration @ .050" == 242°
Camshaft Exhaust duration @ .050" = 242°
Camshaft lift - Intake == 0.520"
Camshaft lift - Exhaust = 0.520"
@ 114° LSA

1970 Chevrolet 454 w/LS6 engine.
C.R. = 11.25:1
Horsepower = 450 @ 5600
Torque = 500 @ 3600

1970 Chevrolet 402 w/L78 engine.
C.R. = 11.25:1
Horsepower = 375 @ 5600
Torque = 415 @ 3600
Chevrolet Factory Cam Specs by part number
Part # Lifter type--duration at .050 In/ex--Lift in/ex--centerline--description
Small Blocks
3849346 Mechanical - 254/254 - .484/.484 - 114 - 327 365HP& Z-28 302
3863151 Hyd. - 221/221-.447/.447-114 - 327-350HP, L79
3896929 Hyd. - 195/202 - .390/.410 - 112 - 327 300 HP
3896962 Hyd. - 222/222 - .450/.460 - 114 - 350 L-46, L-82
3927140 Mechanical - 257/269 - .493/.512 - 112 - Off Road
3965724 Mechanical - 262/273 - .488/.509 - 112 - 2nd design road race, short track
3972178 ?
3972182 Mechanical - 242/254 - .459/.485 - 116 - 70 LT1 360 & 370HP, 71 LT 330 HP
10134334 Hyd. Roller - 235/235 - .480/.480 - 114 - 350ZZZ and ZZ2 Crate Motor
10185071 Hyd. Roller - 208/221 - .474/.474 - 112 - 350 345, ZZ3&4 Crate Motor
10224241 Hyd. Roller - - 92-94 GenII, LT1, 350
10243779 Hyd. Roller - - 94-96 Gen II, L99 265 V-8
12353914 Hyd. - 180/194 - .378/.401 - - GM Crane Lo speed Hi torque
12353915 Hyd. - 194/204 - .401/.423 - 104 - GM Crane street
12353916 Hyd. - 204/214 - .423/.446 - 110 - GM Crane 305-350 street legal 50 states
12353917 Hyd. - 204/214 - .420/.441 - 112 - GM Crane nan-emissions vehicles & off road
12353918 Hyd. - 214/224 - .442/.465 - 112 - GM Crane marine & off road
12353923 Hyd. - 224/234 - .465/.448 - 114 - GM Crane off road
12364050 ?
12364051 ?
12364052 ?
12364053 ?
12364054 ?
12370845 Hyd. Roller - 214/224 - .488/.509 - 112 - Off Road, lobe for mech fuel pump
12370846 Hyd. Roller - 222/230 - .509/.528 - 112 - Off Road, lobe for mech fuel pump
12370847 Hyd. Roller - 232/242 - .539/.558 - 112 - Off Road, lobe for mech fuel pump
12551142 Hyd. Roller - 203/210 - .476/.480 - 115.5 - 96 350 LT4 w1.6 roller rockers
12551705 Hyd. Roller - 201/208 - .447/.459 - 112 - 95-96 Gen II, LT1, w center dowel pin
14088843 Hyd. - 202/206 - .403/.415 - 115 - 305 HO, 83-86
14093643 Hyd. Roller - 202/206 - .403/.415 - 115 - 87 350 Corvette, IROC Camaro
24502476 Hyd. - 121/220 - .435/.460 - 112.5 - 350 300 crate motor
24502586 Hyd. Roller - 218/228 - .525/.525 - - 96 LT4 H.O.T. crate motor, use with 1.6 roller rockers
NA Hyd. Roller - 202/210 - .472/.478 - 111 - 97 Gen III LS1 Corvette 350 uses 1.7 roller rockers
 
Last edited by a moderator:

Grumpy

The Grumpy Grease Monkey mechanical engineer.
Staff member
This is a list of every replacement roller cam for small block chevys (factory roller).
http://www.osorracing.com/cams/Chevy_Smallblock/ChevySB_279.htm
Competition Cams
Model Number
.05" Duration 1.5:1 Lift 1.6:1 Lift Lobe Sep. Notes
08-300-8 206/210 .450/.480 .480/.512 112deg None
08-302-8 210/220 .480/.480 .512/.512 112deg None
08-304-8 210/220 .500/.510 .533/.544 112deg None
08-306-8 230/244 .510/.540 .544/.576 112deg None
Crane Cams
Model Number
.05" Duration 1.5:1 Lift 1.6:1 Lift Lobe Sep. Notes
104101 184/194 .384/.407 .410/.434 106deg None
104104 184/204 .384/.429 .410/.458 108deg None
104111 194/204 .407/.429 .434/.458 111deg None
104121 204/214 .429/.452 .458/.482 116deg None
104125 208/214 .438/.452 .467/.482 112deg None
104124 214/220 .452/.456 .482/.486 112deg None
JVR4 210/224 .516/.516 .551/.551 112deg None
10HR00022 206/214 .497/.497 .530/.530 112deg None
Lunati Cams
Model Number
.05" Duration 1.5:1 Lift 1.6:1 Lift Lobe Sep. Notes
50160 213/218 .446/.468 .476/.499 110deg None
50155 215/218 .489/.503 .521/.536 113deg None
50156 232/242 .510/.525 .544/.560 108deg None
50162 242/252 .525/.540 .560/.576 108deg None
SLP Cams
Model Number
.05" Duration 1.5:1 Lift 1.6:1 Lift Lobe Sep. Notes
51002 206/214 .470/.490 .501/.522 112deg None
51006 214/224 .470/.490 .501/.522 115deg 1992 Firehawk OE
51010 224/232 .490/.510 .522/.544 112deg None
Accel/Lingenfelter Cams
Model Number
.05" Duration 1.5:1 Lift 1.6:1 Lift Lobe Sep. Notes
74211 211/219 .503/.525 .536/.560 112deg None
74216 216/218 .462/.470 .493/.501 112deg None
74219 219/219 .525/.525 .560/.560 112deg None
TPIS Cams
Model Number
.05" Duration 1.5:1 Lift 1.6:1 Lift Lobe Sep. Notes
700-136 212/226 .483/.520 .515/.554 112deg ZZ9 Cam
700-137 210/218 .492/.492 .525/.525 112deg None
700-150 218/219 .415/.433 .443/.462 108deg Super Profile L98
GM High-Performance Cams
Model Number
.05" Duration 1.5:1 Lift 1.6:1 Lift Lobe Sep. Notes
10134334 235/235 .480/.480 .512/.512 114deg ZZ1 motor cam
10185071 208/221 .474/.510 .510/.544 112deg ZZ3 motor cam
24502586 218/228 .492/.492 .525/.525 112deg LT4 motor cam
GM Stock Cams
Model Number
.05" Duration 1.5:1 Lift 1.6:1 Lift Lobe Sep. Notes
14093643 202/207 .404/.415 .431/.443 114.5 87 350,305man
10088155 179/194 .350/.384 .373/.410 109deg 87 305 auto
10066049 207/213 .415/.430 .443/.459 117deg 88-89 350,305
10111773 202/207 .413/.428 .441/.457 114.5 90-92 350,305
these suppliers Ive used and trust, Ive had far less than IDEAL results from other sources and some are BIG NAMES..Ive dealt with many cam companies over the years and most of them have decent quality cams, the main area in which they differ is tech support and their willingness to work with customers, and how knowledgeable the tech guys are, in my experience comps tech guys rate dead last, the product is reasonably good but the tech support desk can use major improvement


After youve installed several dozen cams from several manufacturers and frequently called tech support you get a feel for how a manufacturer treats customers and how well components fit, function and how they stand up over time,just over all results, Ive rarely had any issues with CRANE, CROWER, or ERSON parts or service, or tech support Ive had minor issues with LUNATI,ISKY ,tech support but not anything serious that was not eventually tracked down to either miss information on installation or errors in customer installs both easily avoided

there are other manufactures that seem to have a few hopelessly incompetent tech support people, with only a loose grasp on mechanics or engine assembly

read thru these threads
viewtopic.php?f=52&t=82&p=105&hilit=+fool#p105

viewtopic.php?f=52&t=155&p=189&hilit=+suppliers#p189

viewtopic.php?f=52&t=324

http://garage.grumpysperformance.com/index.php?threads/port-speeds-and-area.333/

viewtopic.php?f=52&t=1070

viewtopic.php?f=52&t=480

viewtopic.php?f=52&t=181

http://oemcats.com/oem-parts/

suppliers
why not call
crane,1-866-388-5120
crower,1-619.661.6477
erson,1-800-641-7920
lunati 1-662-892-1500
isky 323.770.0930
clay smith 714-523-0530
http://www.crower.com/

http://pbmperformance.com/store.php?catId=327 (ERSON CAMS)

http://go.mrgasket.com/pdf/Chevrolet.pdf

http://www.cranecams.com/

http://schneidercams.com/

http://www.bulletcams.com/

http://www.claysmithcams.com

http://www.bulletcams.com/BulletCatalog.htm

https://shop.enginekits.com/osb/showite ... tegory=445 (ELGIN CAMS)

http://www.elliottsportworks.com/lt1.html

http://store.chetherbert.com/

http://www.dougherbert.com/

http://www.straubtechnologies.com/

http://www.pbm-erson.com/splash.php

http://www.iskycams.com/

http://www.lunaticams.com/

http://www.howardscams.com/index.php?op ... &Itemid=27

http://www.tpis.com/index.php?module=ca ... lic+Roller

http://www.cranecams.com.au/pdfs/bluera ... 4-5-07.pdf (BLUE RACER)
camsd3a.jpg

camsd2z.jpg

camsd1a.jpg



vincama.png


READ THE LINKED INFO CAREFULLY
http://garage.grumpysperformance.co...ped-nose-cam-in-early-block.14182/#post-71937

http://garage.grumpysperformance.com/index.php?threads/semi-fool-proof-cam-sellection.82/

http://garage.grumpysperformance.co...-street-roller-cam-selection.5709/#post-46850

http://garage.grumpysperformance.co...a-better-cam-to-a-zz3-350-sbc.182/#post-26013
for those that don,t know you have options on the cams you order, that are not limited to the catalog options, alone, but be aware it can get rather expensive, and its not unusually for special order cams to take a month or two to arrive.
generally you can select what you need and its a listed option, yes you might want to change an existing cam, by ordering it on a tighter or wider LSA, occasionally you might want a longer intake duration lobe, matched to a shorter duration exhaust, on a custom LSA, like with a turbo application


CRANE
http://www.cranecams.com/uploads/lobe/masterlisting.pdf

CROWER
http://www.crower.com/index.php/master-catalog/

ISKY
http://www.iskycams.com/onlinecatalog.html

claysmith
http://www.claysmithcams.com/camshafts/

erson
http://usaperform.com/-c-154_206.html

engle cams
http://www.englecams.com/downloads/2010 ... atalog.pdf

elgin cams
http://catalog.elginind.com/app/engine_ ... by+Part+No.

herbert cams
http://www.herbertcams.com/herbert-cams-cam-kits/

howard
http://www.howardscams.com/howards2015.pdf

lunati
http://www.lunatipower.com/Performance-Cams.aspx
 
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