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Camshaft Specification Repository

90K views 36 replies 19 participants last post by  VignalDimnage 
#1 · (Edited)
Normally Aspirated Camshafts

Description Duration @ .050" Lobe Lift L.S.A. Centerline

Stock L36/L26: 182/192 .258/.258 N/A N/A

CompCams 76-800-9: 192/200 .300/.310 110 N/A

CompCams 76-801-9: 200/206 .310/.300 112 N/A

Grand Prix Store L36: 206/212 .320/.325 113 110

ZZP GT1: 210/210 .317/.317 113 N/A

Super Six L36: 210/214 .281/.281 112 N/A

INTENSE Stage 1 N/A: 212/204 .322/.298 113 109

INTENSE Stage 1X N/A: 212/216 .327/.321 113 109

ZZP GT2: 216/216 .317/.317 111 N/A

INTENSE Stage 2 N/A: 222/224 .337/.327 112 108

INTENSE Stage 3 N/A: 222/230 .339/.331 110 106

ZZP GT3: 224/224 .335/.335 113 N/A

Power Adder Camshafts

Description Duration @ .050" Lobe Lift L.S.A. Centerline

Stock L67/L32: 182/192 .258/.258 115 N/A

GPS L67 Cam 1: 200/212 .315/.325 115 N/A

Stattama ST1: 206/206 .320/.320 111 N/A

ZZP VS: 206/216 .320/.317 115 N/A

ZZP HL/GPS L67 Cam 2: 206/218 .320/.330 115 N/A

INTENSE Stage 1 Blower: 209/204 .305/.298 113 108

CompCams 76-802-9: 210/220 .320/.320 115 N/A

INTENSE Stage 1X Blower: 210/221 .321/.329 115 111

INTENSE Stage 1X Turbo: 211/204 .323/.320 116 110

Stattama ST2: 212/212 .325/.325 112 N/A

ZZP XP: 212/224 .325/.335 116 N/A

INTENSE Stage 2 Turbo: 214/206 .331/.320 116 110

INTENSE Stage 2 Blower: 214/222 .332/.338 115 111

ZZP XPZ: 217/225 .352/.333 116 N/A

Stattama ST3: 218/212 .330/.325 113 N/A

Stattams SS4: 218/230 .330/.340 116 N/A

IPS Stage 5/ZZP NIC: 220/230 .317/.317 112 N/A

INTENSE Stage 3 Nitrous/Blower: 220/232 .337/.351 116 112

Thrasher Race: 222/222 .354/.354 114 N/A

INTENSE Stage 3 Blower: 222/228 .338/.344 115 111

INTENSE Stage 3 Turbo: 223/214 .338/.332 116 110

Stattama ST4: 224/218 .335/.330 116 N/A

INTENSE Stage 4 Turbo: 226/218 .343/.346 116 110

INTENSE Stage 4 Blower: 235/238 .375/.376 116 112
 
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#2 ·
Stattama SS4
Duration @ .050" is 218/230. Lift is .528/.544 with 1.6 rockers. Lobe separation is 116 degrees.

Stattama ST1
Duration @ .050" is 206/206. Lift is .512/.512 with 1.6 rockers. Lobe separation is 111 degrees.

Stattama ST2
Duration @ .050" is 212/212. Lift is .520/.520 with 1.6 rockers. Lobe separation is 112 degrees.

Stattama ST3
Duration @ .050" is 218/212. Lift is .528/.520 with 1.6 rockers. Lobe separation is 113 degrees.

Stattama ST4
Duration @ .050" is 224/218. Lift is .536/.528 with 1.6 rockers. Lobe separation is 116 degrees.
 
#6 · (Edited)
All the updates listed in this thead, and also the ones that have been emailed to me have now been applied in the first post in this thread. Thanks to everyone for helping to get all the information together!

Just curious, is this list in any specific order?
Intake duration seemed to be the most logical sequence for easy comparisons.

Also, one flaw in the list - you have listed many cams as Comp Cam's (which is true) but the grind specs were design / assisted by ZZP.
Each generic grind listed in CompCams' catalog is listed as CompCams.
 
#11 ·
you missed mine too

 
#13 ·
Of all these cams do you know, and can you note which of them are regrind cams (having a reduced base circle from the stock size) ?
As a few people over here with the standard lifters and rockers are having noise issues and would prefer the option of knowing if the base circle has been changed.
If I replace the cam I don't want a regrind (reduced base circle from stock).

Cheers
 
#14 ·
OZ38 said:
Of all these cams do you know, and can you note which of them are regrind cams (having a reduced base circle from the stock size) ?
As a few people over here with the standard lifters and rockers are having noise issues and would prefer the option of knowing if the base circle has been changed.
If I replace the cam I don't want a regrind (reduced base circle from stock).

Cheers
i think all the cams are new from COMP CAMS so they should not be reground....
 
#22 ·
Any chance anyone knows the opening/closing I/E degrees for the L67 cam? Anyone ever degree it?

Thanks!

Normally Aspirated Camshafts

Description Duration @ .050" Lobe Lift L.S.A. Centerline

Stock L36/L26: 182/192 .258/.258 N/A N/A

Power Adder Camshafts

Description Duration @ .050" Lobe Lift L.S.A. Centerline

Stock L67/L32: 182/192 .258/.258 115 N/A
 
#23 ·
This is straight out of the GM Holden workshop manual for the L67 / L36 engine. The same engine as yours basically.

Camshaft lobe lift
Inlet .........6.56mm (0.258")
Exhaust .....6.48mm (0.255")

Valve timing
Inlet
Opens - BTC............29.5 degrees
Closes - ABC............115 degrees
Duration..................324.5 degrees

Exhaust
Opens - BBC.............76.5 degrees
Closes - ATC.............78.5 degrees
Duration....................335 degrees




Cheers

Deek
 
#25 ·
abbott racing heads cams

ARH Naturally Aspirated cam
-210/220 @ .050
-.320" lobe lift on the intake, .512 with a 1.6 rocker ratio
-.320 lobe lift on the exhaust, .512 with a 1.6 rocker ratio
-112 lobe separation

ARH Turbo/Blower cam
-220/220 @ .050
-.320" lobe lift on the intake, .512" with a 1.6 rocker ratio
-.320" lobe lift on the intake, .512" with a 1.6 rocker ratio
-114 lobe separation
 
#29 ·
I had read some where else that the stock (Series II) L67 cam had slightly more lift and duration than the stock L36.

You list them as the same, which is correct? Are there different L67 cams on the Series II
The L67 & L36 cams are the same cam, no difference in the camshafts.

BUT

There is a 5° advance difference in the L67 & L36 camshaft gear keyway positioning.

I recently did an Inlet only degreeing of the stock camshaft in a L67 & then fitted the L36 camshaft gear & did it again.

The results were:

@ 0.050" using the L67 camshaft gear -
Inlet opened @ 22.5° After Top Dead Centre
Inlet closed @ 27.0° After Bottom Dead Centre
Inlet centre line was @ 114°

@ 0.050" using the L36 camshaft gear -
Inlet opened @ 27.5° After Top Dead Centre
Inlet closed @ 32° After Bottom Dead Centre
Inlet centre line was @ 119°

If you add up the opening & closing you get 184.5°

Which is very close to the 182° we have seen posted for the L67 & L36 cam specs.

Cheers

Deek
 
#28 ·
hay guys whats this one?
 

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