It is close to 15.0 to one on 7 cylinders and close to 14.5 to 1 due to combustion chamber volume and deck height differences, it is not perfect whiney
I think I will recheck all eight cylinders again to make sure on the true compression ratio confused
EDITED: I recheck all 8 cylinders on the compression ratio on United(KB) web site and it has between 14.56 to 1 lowest with 15.01 as the highest compression ratio due to deck height and combustion chamber volume differences shruggy

Last edited by Cab_Burge; 07/28/19 11:52 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)