SBM guys turn a lot higher than my projected 6800 using only 5/16, Terry suggested that I try these out. My cup and ball is all 5/16 and the Comp pro-mags have lots of clearence so i should be all right.

Mike remember the effect diameter has on Circumference .125 = ~.393 more perimeter wall surface, since my pushrods are only 6.55" long (due to the longer roller tappet body/ higher cup position), these pushrods should be plenty strong and still comparatively light.

Terry said 48% stronger (less deflection prone)than a 5/16 but 48% weaker than 3/8