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Well-Known Member
Measure the pin height (also refered to as compression height) of the pistons you have now. Pistons with a taller height than those will yeild a higher ratio. Or pistons that have domed tops (pop-up pistons) It's unlikely that you can achieve a higher ratio than you have now with those heads and flat-topped pistons. You can mill the heads up to .040 without having intake fitment problems, this amount will net you about a half point increase in the comp ratio.
