What affects power more in a camshaft....high lift or longer duration?

RustyRatRod said
Most stock heads stall out a tic before .500 lift. IF we're talkin about stock heads.

So the answer is 250@.050 and .530 :)

IMO, always lift past peak flow a little if possible, Valve doesn't stay at peak lift long enough to access the flow rates there. Peak accessible is usually a bit lower .030-.050 on the flow sheet