MadStang
Well-Known Member
I have a problem with decking the block of an NPI (assuming thats what you were talking about) would that not rob you of the very little PTV clearance you have to start out with? valve notching the pistons can only do so much.
I have valve notches that are .080 deep. Flat top pistons, Zero decked block, .030 decked 39cc heads, and Stage 4.5 cams. no valve clearance issues. you'll have plenty of PTV with notched pistons.