don't want to hijack, but I think this ties into this discussion:

since we are talking about oil pumps, what's the real world difference between high vol pump and high press pump? just wondering because lately I have been reading that high volume pumps are useless and maybe even detrimental in a stock type build. I know 10 years ago when I had a shop do my short block, seemed like everyone was putting high volume pumps on. Now not so much. My guy put a high pressure pump on and I'm wondering what real world effects I could see as far as longevity, etc...