Quote:

I had to go with a plus ..050 retainer to get my spring height. I aired on the side of clearance and set the installed height at .950. In doing so my spring pressure may be lower than I expected. I am going to check all spring heights and pressure and will report my findings.

I agree, check the springs. Not enough spring pressure can cause the lifters to get beat up, especially as the rpm goes above 6500 etc. Besides the installed height, the street driving (how many years?) may have caused the springs to lose tension.

I don't know for sure, but some might say 275/675 pressures and 0.120" pushrods would be the preferred setup. But don't expect the lifters to last forever.

1993 Daytona, 5.50 at 130mph (1/8) 1.19 sixty ft (PG). Link to 572 B1 - Part 1