FWB Go to .904" dodge lifters in your FE block. Like you have been involved since 73 at racing at e-town. The other thing I have found is that the greater the lash, the faster the lifter turns to junk. IMO oils today are too slippery, not enough cushion of fluid and cause roller in the lifter to slide and not roll over the camshaft lobe. Lucas is a quick fix in some cases and a long term running in my case. 12 years with rollers and no problems.95% racing. The other thing is lash of the hydro roller, .015" on the plunger. Can take this setup up to 6,500 rpms without valve float. Someone has come out with limited hydro rollers, I have a dip of about 40HP that starts at 5,700 rpms and then goes up again to 6,200. the power starts to return. Beehive springs help this also.
As far failures too much lash, too thin of oils, too slippery of an
oil, or rev limiters being banged all speed up the failure of solid rollers. High spring pressures too. Good luck with your repair. Rick L.