Hi volume oil pump vs standard volume pump

nm9stheham said

Honestly, I'd agree. I like the HV just because it will give a bit better pressures at lower RPM's; I don't run at extended high RPM's so any added (trivial) power loss is a non-issue for my uses. IMHO, a GOOD pump with well in-spec clearances is the most important thing; and, as noted the 'HV' aspect of the SBM HV pump is not nearly as much 'HV' as in some engine designs.

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This is one of the reasons I went with the HV pump and increased oiling to the top end; so I could parade the dang car with a minimum water temp of 207*F,at 4 mph, which with my 3.55gears is 550rpm. (Just try that trick with a manual trans, a750DP, and a 292/292/108 cam.) I wanted my expensive aluminum rocker arms to live.
The thing about a street car is; I'll guess 95% or more of a streeter's life is spent well below 4000rpm, yet we build them to go ~6000. Every system has to be re-evaluated for it's intended usage.
Ask me if I care about 4hp at 6000 rpm, when my tires are spinning? Ask me if I care about 20/30 hp at 5500 when the tires are still spinning. I still don't care. What I do care about is my rocker arms, and they currently have over 100,000 miles on them, so I think it's working. I traded away my 292/292/108 for a 270/276/110 and was very happy about the deal. And that 270 cam about halved my fuel usage. Double-win.