Ok, I have been trying to figure a CR for my ride using the MVA cylinder heads. Here's what I have figured, correct me please if I am wrong. Cylinder displacemnet - 1737cc - about 869cc / cyl. Combustion chamber - 95cc So, CR is approx. (869 + 95) / 95 = approx 10.1 (granted, not taking into acct. head gasket) Is my math sound?? Thanks! Currently running stock heads so, (869 + 85) / 85 = 11.2 (Still not accounting for head gasket. Running Cometic)????