I was reading about 318's that the older, more powerful (230bhp) motor had 60cc combustion chambers, and the newer ones had 61cc's, which lowered compression. But, I was looking at performance heads, and they all seem to offer even larger cc's, when I would think smaller would be better for higher compression. Example:
Summit: Edelbrock Performer (EDL-60769), 63 cc's
Summit: Mopar W2 Cast Iron Race (DCC-5249769), 65 cc's (By the way, the description says the head is made of aluminum, not cast iron...what's that all about?)
Are the larger cc's cut so you can put a taller piston in or something? Thanks.