What oil pump/bypass spring, and oil restrictors?

I've struggled with a few BBC with billet pumps that just moved too much oil upstairs for the pan volume.

This is the last 632 I ran on dyno

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Faster, Faster until the thrill of speed overcomes the fear of death...

71 Swinger - slowly collecting dust/parts
66 Belv. II - just a streetcar
88 Mustang - turbo LS beater