[Excaliber]

It is tricky specing the right pistons. I went with Arias, custom slugs. Had to do a LOT of measuring and calculating to arrive at my specs. I moved the piston 'up' in the hole to gain quench, but then had to 'dish' it to keep compression at my target 9.6 (or 9.8, I forget now). It cost a bunch!

B.T.W. typical 427 specs leave the piston .030 below deck, this means virtually no 'quench'. Back in the day high octane was readily available and quench wasn't a serious consideration like it is now. If you run 'off the shelf' pistons it is a big question what your real C.R. will wind up being (and no quench either).