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Either way, at the end of the day, what does it really matter? Nobody builds a performance engine with stock pistons these days and no two engines were built exactly the same. Go with your aftermarket pistons, have your block decked to get zero deck and call it a day.



what matters is there is some potential misinformation in this thread . too many times i have seen people that haven't researched the combo they want get STUCK with a low compression PIG because they either assumed that they were buying correct replacement parts when what they were really buying was the aftermarkets COMPROMISE to having to carry an EXACT replacement for every model year , at least thats how it works with big block MOPAR engines .

take the 383 for example , 2 or 3 basic compression ratios built over multiple years with first a closed chamber head then an open chamber head , dicounting a DOMED piston, both TRW/SPEEDPRO and KB carry ONE piston to cover ALL those variations