I swapped out the Smith Bros 3/8x.088 wall (I paid for .120 wall 3/8 originally runaway) pushrods after one folded up and broke into two pieces during a dyno pull on my old bracket 526 C.I. 440 block. I had to have the lifter bushing repair after one of the pushrods gouge a groove in it when that lifter pop out at 5600 RPM and broke the tie bar on the Crower Ultra roller lifters and gouge the cam lobe puke
I bought a set of Manton 3/8x.120 wall Series three pushrods and went back to the dyno for more testing after fixing everything on that motor, I made several pulls to make sure the motor was happy with the old Smith Bros. pushrods (they did replace the two bad ones with new .088 wall for free but not the broken lifters) and would repeat on the power and torque. I then swap the pushrods with no other changes and the motor made 8 HP more at 300 RPM higher peak HP RPM than with the 3/8x.088 smith Bros. work shruggy
Getting the correct parts needed for the most power is essential to success on motors thumbs twocents
My new bracket motor has the Jesel pair shaft chrome moly rocker arms on it with Manton 7/16x.145 wall pushrods in it thumbs

Last edited by Cab_Burge; 12/21/16 04:53 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)