Quote:
Cylinder pressure is not directly related to compression ratio. You need to know cam specs, bore, stroke, rod length, static compression, and valve closing angle. other wise you're just guessing.
 Just b/c my wedge cranks 185 psi doesn't mean it'll run on 93. It still has the same 14+:1 compression it did before when it cranked 275 psi...the cam is the only difference.
The compression ratio still needs to be on the low end (for the most part) to be pump gas friendly.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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