u/kmfblades

I see a ton of companies advertising pistons to the aftermarket these days as "drop in" saying they match both weight and size of factory pistons.

These pistons are supposed to be for stock bore, stock bore is 4.090", block is torque plate honed to 4.090". These pistons land between 4.088" - 4.0885" and after getting ahold of Mahle are supposed to have .003" P2W.

Not a huge difference but .0015" P2W on a boosted engine absolutely is not gonna cut it.