When or does less lifter weight have greater advantage vs using larger lifter wheel diameter by having an advantage with a larger diameter lifter?
The language is terrible but I think I get the just of your question. It's a tough one. The larger diameter is said to provide greater control of the wheel following the cam. It also is said to provide greater reliability as the cam lobe impact will have less side load on the lifter bore. Most of the lightening has stemmed from unwanted high RPM harmonics. I would imagine that lighter metallurgy in anything spinning or going up and down would free up some HP. It will certainly loosen your wallet. I would say the larger diameter would be more beneficial in your deal. Sorry it was tough question for me to frame properly.  Maybe I should have asked what is the weight difference between big and small diameter lifters and does it really matter? Thanks Weight doesn't really matter. Use the biggest diameter body you can get with the biggest wheel. That's about .810-815 on a .904 body. I'm with you on this one.
RIP Monte Smith
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