Thanks in advance for your assistance. Rebuild should be completed in a few days.

1967 Camaro RS/SS
73 454 Block, bored .030 and align honed.
Factory steel crank
Eagle H-beam rods
Forged 10.3:1 pistons
Cast Factory Sq port heads(open chamber), ported and polished 119cc
Edelbrock dual plan/air gap intake
Comp Cams-XE 284H- 240 Int/246 Exh dur @.50- 574/578 lift
Holley 850cfm Carb
4:10 rear.

Thanks

around 525HP, tq shoud be about the same.

515hp, 535 torque


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I think the programs used above are pretty ambitious. Dual plane, mildish cam,..I'd say you're in the one HP per cube range or 450-460 range. But a well thought out and driveable build,..good job.

If it were stroked to 496 I could see close to 500 HP.

My opinion...

I based my numbers on actual engine I built about 5 years ago, which was similar to his. But I used XE274 Comp cam. My engine had oval port heads and made 480hp and 540 torque on the dyno at the machine shop where it was built............


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If that thing doesn't make 500 hp and 500ft/lbs of torque something is wrong. My 454 is an oval port engine with the same carb,compression,more lift and less duration and was way over 500 hp and 563 ft/lbs. Our power would just be in different rpm ranges. I do think that with a hydraulic cam you should use oval port heads, not rectangular port. You are trying to make power in an rpm range not suited to a hydraulic cam when you use rectangle ports.