NHRA shows the 315 head to be 130cc on the intake. For some reason NHRA shows the 302 and 308 heads to be in the 160cc range. The port volume will increase somewhat depending on the "valve job". We can always cut the intake and exhaust flanges back a little, but since NHRA doesn't post any volumes, I doubt that we will. It might depend on how much we deck the block and heads. Not really close to that point now. I bought three blocks last year, one was a short block. I have another 273 crank from my old Darts engine and another forged 318. I have a 5.2L Magnum crank. It's cast, but I've heard some stocker guys run the cast cranks since they tend to be lighter than the forged steel cranks.

My machinist didn't like the Ross pistons. He said they were too hard, so we will probably buy the CP pistons. Funny the old TRW pistons aren't legal anymore. Those are nearly impossible to find anyway. I think Badger used to have a legal piston too many years back.