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Holley Red pressure adjustment.

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  • Holley Red pressure adjustment.

    Is it possible to adjust the pressure of the Holley Red pump within the pump itself?

  • #2
    UPDATE: I took pump apart to clean and check. I see there are four brass washers on the regulator screw. If I remove those will it reduce the pumps pressure?


    • #3
      Does anyone have experience with this?