It seems like only yesterday when we first had pushrod failures, which needed to be solved. But, alas it was actually 1962. Yes, our first time was that long ago and I would be hard pressed to say how many times I have gone full circle to come back yet again to pushrod problems. There is always a weak link in the chain that seems to show up as power and RPM goes up, many times the problems once solved comes back to be solved again.
This particular situation for our car's most recent problems with pushrods actually goes back more than 12 years when we went to 0.730" lift at the valve, Chevy type springs, 10,500 RPM in 1st and 2nd, and 9600 RPM plus in 4th gear. In an effort to solve this (again) I used our chrome moly, carbon fiber, Autocraft tapered, Pauter, heavier (true alloy) 0.055" wall 3/8" straight pushrods, and on, and on. Every so often we would have one or two pushrods still bend and/or split at high RPM, often breaking the end off of the lifter.
We have finally cured this with a new special straight thicker (0.042") wall 3/8" chrome moly pushrod that has been heat treated to a much higher tensile strength, then polished on the OD. Our special May West full ball ends are naturally featured for maximum rocker arm screw clearance when extra high cam lifts are used. All consumers with Chevy type springs be aware I have a set in stock for you! It's only a matter of time until you will need these. Can be shortened about 0.600". Sold individually, or in sets of 8. Originated by Gary Berg in 1986. Made in the USA. SW 3# set.