Would advancing this cam 2* or so be worth doing.

Fst73_360 said
more cylinder pressure means more dynamic compression also. So maybe double check that it wont effect type of gas used?

Good point. I may need to just dial it in like the card says. I know this thing absolutly will not run on 87 octane, did that once by accident, 93 only. It is a standard bore 340 with the factory forged 10.5:1 pistons.