Quote: 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 ...
Yeah that KB 383 piston is pretty much a canyon I thought the 440 piston came closer to the deck than .020.
At deck height spec the F-M 424 440 piston should be roughly .010 in the hole in a 400. I'm wondering could you get away with a flattop 0 deck piston in a 400 without valve reliefs with say a cam of about .500 lift?
Yeah that KB 383 piston is pretty much a canyon 