Comp cams xe268h for 318

AJ/FormS said
The pistons in the early ones have a larger compression distance but it ain't by much.
Here are some specs I found, in; HPBbooks how to rebuild your SMALL BLOCK MOPAR.
Piston compression distances: 1967 to [email protected], 70/[email protected], 72 to [email protected]

Well now I am confused AJ. We had a recent post here on FABO where some said that they had actually measured some early 318 pistons with the piston tops <.010" below the deck.

I do know that I have some '68 273 pistons with a measured compression height of around 1.820" (confirmed by another poster) so that info on the early 318's being way up in the bores made sense. Now I just don't know.... Regardless, finding those early pistons in a usable condition with the OP's unknown bore wear is probably just about impossible.

AJ/FormS said
Heads: 1967@57cc, 68 to 74@60cc, 75 to 86@63cc, 85/86 #302fastburns at 62.3cc, and the big-port police heads at 75.1

FWIW.... Those mostly look like NHRA competition chambers volumes not typical production volumes. Example: 675 heads reportedly measure out around 68 cc's + or - (as did mine at 68 cc's).