dynoed my 416

Some cam manufacturers specify lift at the cam and lift at the valve and they take into account the lifter angle. Here is the cam I just bought:

http://www.cranecams.com/index.php?show=browseParts&action=partSpec&partNumber=699641&lvl=2&prt=5

That cam card gives theoretical lift at the valve using a almost perfect 1.5 ratio.

Brian at Indio Motor just put a new cam in his w-2 360. It was somewhere around .595 lift with a 1.5 rocker. Lift at the retainer was in the .570 range.