I'd recommend also looking closely at your pushrod tips. If they're scratched, the rocker cups will probably also be scratched and might wear out your new pushrods prematurely. I had similar issues with my hemi rods with only 10k on the engine - too short, not straight, and scratched. Suspect that crooked one might have been short enough for the lifter to reach "zero lash" or zero preload, resulting in some play when the cam is at base circle iaw - ticking noise especially when cold until the lifter pumps up enough to compensate. Too much bending or wear and the lifters can't compensate. Not sure about LS but hemis are supposed to have about .040" of lifter preload.
I'd recommend Manton pushrods. For my hemi the lengths and straightness are excellent.
Last edited by rockystock; 02-10-2019 at 11:42 AM.