Hey ya'll built a 383 stroker and everything seems fine. I have about 6k on it and it runs strong. It has had a tap thought since new that is bugging me. At about 2000 rpms it is loud enough to hear in the drivers compartment. I've adjusted the valves with no change. It is not a rod or main bearing knock, could be valve train but I'm not sure. Being that it's a stroker I did have a crank windage tray contact problem early on but I fixed that "I think" any ideas or simular experiences?