Im trying to figured out how much compression i will have. Ok its a 350 bored 40 over, speed pro flat top hypers with four valve reliefs, i will be using 64cc double humps, ok the book says 9.3 with 64cc heads. But my block was decked so the pistons are close to .008 in the hole. How much will that raise the compression? Also if i went with a .015 head gasket how much would that raise compression. My cam calls for 10.5 i didnt realize that until it was already installed lol. Thanks for help.