Mega block, Isky Red Zones, .055" pushrod, .060" bushing hole, .0025"+ lifter bore clearance, 1/8" tall Melling pump, Indy single line cover. The relief spring has enough coils clipped off that it rattles in the pump. Running 5w25 JR1 oil. Even with the clearances this loose, oil pressure is great. I've had it apart after 200 passes for inspection. All good. 40-60psi idle depending on oil temp, 70 psi hot@7000. I did notice the axle feed hole is below the lifter bore bushings at base circle. Doesnt seem to bother it.See attached drawing.
Doug