Mild 383 build

Shorty Thompson said
Well. I got .025 with the 383 piston when I checked it. The tech also recommended a .050 composite head gasket to keep CR around 10.5-1. Now if he's wrong, and your right! Then yeah me. Because that's a win/win for me.

all of this is an assumption if you don't know the true deck height and the real cc of the chambers.

you can get right close with published numbers, but with production tolerances it's just a guess, albeit an educated one.