I'm using the same stroker kit and can hear the pistons slap when the engine is cold. Seems to almost go away when the engine is hot so I don't worry about it. I have about 10,000 miles on the engine and it still runs fine.

Last edited by Mick70RR; 06/15/13 12:37 PM.
1970 Road Runner 505 cid MCH CNC ported Stealth heads MP 528 camshaft 4 speed GV overdrive 11.98 @ 117 on street treads