Can someone with more knowledge then me , please give me an idea of the compression ratio i could expect with #16 (k067) heads on my stock built 400 . It has standard bore pistons (4 valve reliefs) , Comp XE268H 51-232-3, lifters, springs, p/rods, t/chain and 1.5 Comp roller tip rockers. Ive used the Butler calculator and come up with 9.5 and 8.4 static.(im using Felpro head gaskets) Does this sound right or am i doing something wrong ?
Would 9.5cr suit pump gas (roughly 95 octane or 91 octane)
