Need info/help on a 340

caferacerx said
how did you come to the conclusion that it cant be over 10.37 to 1? with available parts it is easy to go a lot higher than that

I know you can go a lot higher than that, I'm basing it on what I know about the motor. The only thing I don't know in calculating the comp ratio is head gasket thickness, and exact deck, but I know it's right around zero deck.