Quote: I thought if you ran 440 pistons in a 400 you needed to cut valve notches into the pistons? Seems clearance would get mighty tight with that tall of a piston and no notches...?
Possibly, but lots of guys run the the flattop TRW's in 440's and 383's that are only slightly down in the hole (or zero deck with a light cut) and they seem to run fine?
And what TRW/speedpro piston in a 440 would that be ? The only pistons available are either .020 in the hole , the 6pk piston and it has valve reliefs or the low compression pistons and the closet one to the deck is .100 in the hole ?????
as far as the 383 , the flattop is .015 in the hole , anything else is deeper or have a valve CANYON ...
