I finally had an engine builder build us a complete engine instead of doing it myself. Its a 355, unported vortec heads, solid cam, performer intake, 4412. On to my question, he used a big block oil pump in this build. Who do some of the old guys do that? Am I loosing power needlessly with it? I used to use the 10552 or 10555 on my builds, would I find power going back? Other options?
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