Does the block appear to be decked?
The nominal stock deck height for an RB block is 10.720”.
With an uncut block, pistons with a C/H of 1.980 should be close to .100” down the hole at TDC.
If the top of the dish is 1” smaller than the bore, and the bottom of the dish is .750” smaller than the top……. And you average those two bore sizes it’s a hole 3.905” …….. x .420” deep.
Which would be a dish that’s about 82cc worth.
Whereas a .060” over flat top piston that’s down the hole .150” is “only” 37cc’s.
