Quote:

Jim, if your engine isn't together yet then take the time to provide clearance for larger pushrods. Buy one set of 1/2 inch pushrods just for clearance checking. At some point in the future you can swap over and see if there is any performance improvement. I think you'll find some power.



that's a good idea Andy and i agree

don't spend much time here these days but "think" i learned a little bit about push rods recently. for the more highly stressed components used these days i'm of the impression stepping up to a 7/16" double taper is a good idea. if i ever get my junk together i will be using more than a 3/8".

as for the ball/ball ball/cup thing i think it's a mixed bag. recently i learned (i think) of using copper/beryllium in cups. i haven't seen the parts yet but am curious to say the least.
in recent months i've seen some VERY stout, seriously stressed valvetrain components (over 1" lift and STIFF springs) and was impressed.