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Upgrading from PF 1 to PF 4 - AMC/Jeep

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  • Upgrading from PF 1 to PF 4 - AMC/Jeep

    Hi,

    I have a 1981 Jeep CJ7 with an AMC 360 V8, Edelbrock Heads and Edelbrock EFI... I was thinking of upgrading my Pro Flo 1 to Pro Flo 4... What parts can I reuse from the old system? I read that I can reuse the external fuel pump, but what about the fuel pressure regulator? Anything else?

    Thanks a lot,

    Pablo

  • #2
    That's about all you can reuse. The fuel pump, and 43 PSI regulator.
    ​​​​​​
    At 43,861 MPH Elon Musk now owns the fastest car in this Galaxy

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    • #3
      Originally posted by BITE_ME View Post
      That's about all you can reuse. The fuel pump, and 43 PSI regulator.
      ​​​​​​

      Note: PF 1 regulator has pipe threads & wont fit onto PF 4 ...-6 ORB fuel rails.

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      • #4
        Actually I thought about that.
        I was thinking about switching the rails over.
        At 43,861 MPH Elon Musk now owns the fastest car in this Galaxy

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        • #5
          What is the part number for the new fuel regulator? Thanks again for the replies.

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          • #6
            Edelbrock #17400.
            At 43,861 MPH Elon Musk now owns the fastest car in this Galaxy

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            • #7
              In which cases do I need an adjustable pressure regulator for Pro Flo 4? Or is it enough with 43PSI

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              • #8
                that is a fixed regulator so none adjustable .

                is the best way to go using the edelbrock parts..

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                • #9
                  Originally posted by fleet man View Post
                  that is a fixed regulator so none adjustable .

                  is the best way to go using the edelbrock parts..
                  there are Edelbrock adjustable fuel pressure regulators, like Edelbrock # 1728

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                  • #10
                    The none adjustable is 100% the best unit to use for street use.

                    If you are going to be using a turbo/supercharger, or more then about 1.5 HP per cubic inches. Then you go with the adjustable units..... Basically your only option is a adjustable unit for high horsepower applications.
                    At 43,861 MPH Elon Musk now owns the fastest car in this Galaxy

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                    • #11
                      Originally posted by pablorg View Post

                      there are Edelbrock adjustable fuel pressure regulators, like Edelbrock # 1728
                      as bite me has said the fixed is the best for street use i'm using a fixed 58 p s i for mine.

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                      • #12
                        The main difference between the two ( 43 vs 58 PSI ) fixed regulators. Is horse power rating. Most people use the 43 for stock, or mild motors.
                        At 43,861 MPH Elon Musk now owns the fastest car in this Galaxy

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