Stockish 340 upgrades, cam needed

If were going to evaluate compression that close, all variable need to be verified.
Such as the pistons need to all be put back into the block and verified of above deck height (this may have already been done.)
On top of that we need to drop the piston down in the hole .050" of a inch and CC. piston
spec's says 7.5cc........When i did this on my .060" over piston, My piston was 7.35cc.

I think that a custom head gasket that don't have a bore size of 4.120 would help a little as well.