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my valve springs are set up at 590# open pressure. would an .080" wall thickness 5/16 pushrod be ok or do i need something heavier?


don't take chances 590 spring pressure is enough to bend a 5/16 .080 PR. Go with a 3/8 .080.




I was running over 700# with a 5/16x.120 wall with 0 problems and was spinning it to 8000,and Terry Manton assured me I would be fine,but they where a little short at just under 7.00


70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake

best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4