Can any of you guys help me figure my compression ratio with my combo? I have a 360 that is 20 over bore, the pistons are speed-pro h116cp, and they are .042 in the hole, the crank is 3.58 stroke, the heads are 68cc, and the gasket is .038 compressed, and thank you for the help. P.S. I called federal mogul 3 different times and got 3 different ratios. Thanks Jeff.