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Old 10-10-2012, 09:21 PM
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Originally Posted by 06-z0sick View Post
Cam is a retrofrit Hydraulic roller. It has roller lifters with the stock non roller rockers.
The car is a 1969 Camaro RS. It has a 4 speed trans with a 3.90 rear gear. 295 street tire used only for street weekend warrior.
So i was thinking 195 65cc AFR street heads? or competition heads?
Edelbrock performer RPM intake
Holley 750 DP carb
OK, so this is the cam....
12-601-8 - Thumpr
Intake closes at 39.5 degrees after bottom dead center @0.050" tappet lift.
If static compression ratio is truly 9.6:1, then dynamic compression ratio is 8.274:1 on the KB calculator. Motor should be able to run on regular pump gas with that DCR.

Hydraulic rollers, due to their weight, will normally limit revs to around 6200 unless you also use a rev kit in the lifter valley.
The double pumper should work ok with a manual trans 4-spd....... RPM is the correct intake to use....... 3.90 gear should work ok with that cam....... 90% drag strip, I'd use comp heads. 90% street, I'd use street heads.

Last edited by techinspector1; 10-10-2012 at 09:29 PM.
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