hey guys in in the process of ordering parts to get my motor built, so my ? is the pistons im gettin say 10:0:1 compression..but the heads im getting are ported do you get compression by reading the combustion cc's..need to know asap..thanks guys

 

Bore, stroke, cc's, and headgasket thickness all factor in for CR.

 

HI!... Also remember that you'll be running CNC'ed heads. They will CNC the combustion chambers also, making them slightly larger. This will effect your final compression ratio. Make sure who ever you get your heads from gives you data on what the finall CC of the combustion chamber is.