I know the small block "block deck height" specification is 9.60 inches. But where can I find the specification for the piston height (above or below deck) for 68-71 340 motors? I've looked everywhere in my 1971 factory service manual and found nothing. Isn't there a resource on this forum for blueprinting a motor? You know, recommended bearing clearances, piston to wall clearance, head gasket thickness, and the like for a street/strip car?

The main problem I am having is working on getting 10:! compression on a 305 Mopar motor that I plan to build. Using the online "Eagle rod calculator" and the 2.96 crankshaft, the Trans AM size 6.25 rods (versus factory 6.123), and the factory pistons, I only come out with 8.15:1 compression and the piston ends up 0.029 below deck. I wish someone could tell me what pistons were used in those Trans Am 305 motors. Anyone have a clue?