Which oil pump

fishy68 said

Stock clearances=stock volume pump in my book. Your wasting HP spinning that HV pump and also creating alot of heat from the oil bypassing.

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When you compress oil it gets HOT, the more, the HOTTER.

I use stock pumps in my 340 and 410 strkr that have 2 thou'ish bearing clearances.
Your just using up HP turning it to the tune of 20'ishHP@ 6000rpm