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?
