Comp cams xe268h for 318

dirty white boy said
the 85 up 318s with 302 heads sposed to be 9:1 ratio from factory, lest the ones ive seen with factory roller cams have been...

Unfortunately, not the case. Take 64 cc chambers and work it out. With the standard Felpro 8553PT head gaskets, your just tickling 8:1 SCR with pistons .075" in the hole at TDC. We all wish it was better.