Without knowing how much travel is left in the lifters the only correct answer is "maybe". In all honesty a .020 or .030 cut isn't going to gain anything. It's .0066" cut per CC of chamber, so .030 won't get 5 CC. You might get the compression up to 8:1.

IF my old brain remembers correctly, there SHOULD be about .090" of travel left in the lifters.


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