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Thread: Holley Red pressure adjustment.

  1. #1

    Default Holley Red pressure adjustment.

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

  2. #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. #3


    Does anyone have experience with this?

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