Anything wrong with single oil relief cases?

[Greggyboy]

I am assembling a GE case, 2L, solid lifters, and a SINGLE oil relief piston. I am about to put the case halves together. Is this going to be a problem with solid lifters? Does that tiny relief piston buy anything for the hydro lifters that solid lifters will need?

[Greggyboy]

It's a camper special cam shaft by the way with brand new webcam lifters.

[Piledriver]

No problem.
All the later T4 cases had hydraulic lifters, and were single relief.
DO check the case out very carefully as it did service pushing a Bus.
(mains, deck flat etc all need careful scrutiny)
The center main bearing seat on T4s doesn't usually pound out like a T1---
It can get smaller the center of the case kinda sags in.
The cases also can spread in the middle, leaving the center main loose...
(Thus Jakes "carbon paper" test)

Less of an issue with the earlier cases for some reason, less abuse? Less heat maybe? Jake suggested the metal alloy and or thickness also changed, he preferred the early cases for HIS motors for all the above reasons.

The differences in the late oil system were ~significant,(single relief, closed in-case recirc path rather than return to sump, shorter pickup) but the effects were relatively trivial, and not necessarily bad, as the redesign should have reduced the likelihood of oil pump cavitation at high RPM.
The neck-down at the sealing oring on the pickup tube always weirded me out tho.
(early or late)