hemichuck
Well-Known Member
im building this 408 for a car that will probably end up getting raced more than anything, mostly just trying to use up all the parts laying around my garage. The short block is all forged, Scat crank, Eagle rods and Probe flat top Pistons with valve notches. They have a zero deck. I have a Mopar Performance 557 lift solid cam. I have a couple of sets of heads I can use but that's where the compression question comes into play. I have a set of Edelbrocks with 63cc chambers, on this short block with a .040 head gasket you have around 11.75 compression, you can bump up to a Cometic gasket that's .070 and get it down to 10.8 compression. Is 11.75 too much? I remember running the old 12.5 TRW Pistons back in the day but that was with open chambered heads. I'd like to hear some opinions from people who race, I've been out of the racing game for a while but my son is kind of shoving me back in.