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Re: Info on L98 Corvette Heads
Do a Google search on "compression ratio calculator" and you will get thousands of hits. You may also want to learn about "dynamic compression ratio", which factors in your cam's intake valve closing point. This calculation is a more accurate indication of cylinder pressure.
If your 327 has flat top pistons w/ 4 valve reliefs, 9.025" deck height, and .038" gaskets, your static CR with 58cc heads will be around 9.6:1 -- which is no issue at all with aluminum heads and even a mild cam.
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Mike
1969 C10 LWB -- owned for 36 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, recent AAW wiring harness, 5-lug conversion, 1985 spindles and brakes.
1982 C10 SWB -- converted from 250-six to roller cam 350, Vortec heads -- sold
1981 C10 Silverado LWB, 305, TH350C -- sold, but wish I still had it!
1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming.
Retired as a factory automation products salesman.
Worked part-time over the years for an engine builder and a classic car repair shop.
Member here for 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then!
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