redline

All good info, thanks everybody. I get it now, Rpm max doesn't change with stroking, rpm is determined by the sum of the parts. I'm going with 440 source kit. 4 bolt main option, the whole kit is balanced and has optimized bob weight. All USA made parts.

Rick Ehrenberg once wrote...The safe redline is about ONE RPM less than when the engine blows up.

good one!

IMHO, the stroker will make more torque & power lower in RPM. Needs heads to support increased flow & higher piston speed away from TDC. Valve train will almost always limit "effective" red line. I ran excessive RPM with my 440's & 452 low decks. Only engine failure was low deck, normally ran to 7200 RPM and had 2 piece #5 main cap when pulled with about 250 runs, still ran great. During that time, many, many broken valve springs & a few pushrods. Later a cut down 440 steel crank in another 452 low deck was fine after I forgot to shift to 2nd (727), long wheel stand, quick 8 race. Motor popping, 8400 RPM. Replaced broken valve springs & pushrods, next week found broken mushroom lifter & flat cam lobe. Valve train goes before bottom end in MOST cases. Your stock style valve train is good to 5500 at best.