Joined
·
33 Posts
I had two engine one was a 1968 400 YE block and #15 heads which was 10.5 to 1 compression 340hp. Ok I bought a 1973 455 YC block and #4x heads which was 8 to 1 compression 250hp.. I just got the 455 back from rebuilding it but I put the Heads off the 1968 #15 heads on 455.. I ask the guy who rebuild it to cc the heads to make shore what cc they were but he for got he said. Does any one know what the compression will be.. This is my frist engine I tore down, Just don't want to engine to blown up... CAN SOMEONE HELP !!!!!!!!!!! Thanks