Ultima Oil Pump 1984-1991 High Output Pump, Polished
The H.O. pump has a much greater potential for pressures and volume. Unlike stock oil pumps which won’t start feeding the bottom end oil until 2000+ RPM, tests show the H.O. Pump will feed the bottom end at idle
speeds, and keep a consistent flow throughout the R.P.M range to keep from floating bottom end bearings. Bottom line, you are getting a precise pump that you can be confident in.
Fits 1984-1991 Big Twins