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Fuel pump for HO with 30lb injectors?

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    #1

    Fuel pump for HO with 30lb injectors?

    I'm guessing my stock Lopo fuel pump will not carry the mail with a mild HO with 30lb injectors.

    What fuel pumps have you guys gone with and what works best for going to an HO engine?
    Tags: fuel pump, HO build
    #2
    I have been running a Walbro 190 lph Fuel Pump in my car. 24 lb injectors in my set up. No issues.
    ~David~

    My 1987 Crown Victoria Coupe: The Brown Blob
    My 2004 Mercedes Benz E320:The Benz

    Originally posted by ootdega
    My life is a long series of "nevermind" and "I guess not."
    Originally posted by DerekTheGreat
    But, that's just coming from me, this site's biggest pessimist. Best of luck

    Comment

      #3
      Holley/Walbro 255lph pump in mine; but haven't done the 1st start yet to say how it works (or not).

      Comment

        #4
        Originally posted by 87gtVIC View Post
        I have been running a Walbro 190 lph Fuel Pump in my car. 24 lb injectors in my set up. No issues.

        Originally posted by packman View Post
        Holley/Walbro 255lph pump in mine; but haven't done the 1st start yet to say how it works (or not).
        So end up somewhere around 200+lph and I'll likely be okay?

        Comment

          #5
          I would go large; just in case you get tired of the hi-po engine (judging by the "SpeedyEFI" thread) and decide to put something larger in there. At the least; you won't have to switch out the fuel pump when that time comes.

          Comment

            #6
            I would go large as well if I were to do things again. Same with the injector size..though I am not reaching their duty cycle according to the datalogs.
            ~David~

            My 1987 Crown Victoria Coupe: The Brown Blob
            My 2004 Mercedes Benz E320:The Benz

            Originally posted by ootdega
            My life is a long series of "nevermind" and "I guess not."
            Originally posted by DerekTheGreat
            But, that's just coming from me, this site's biggest pessimist. Best of luck

            Comment

              #7
              Originally posted by packman View Post
              I would go large; just in case you get tired of the hi-po engine (judging by the "SpeedyEFI" thread) and decide to put something larger in there. At the least; you won't have to switch out the fuel pump when that time comes.
              Originally posted by 87gtVIC View Post
              I would go large as well if I were to do things again. Same with the injector size..though I am not reaching their duty cycle according to the datalogs.
              Noted, and yeah, I may (will) get bored later on. But for the first iteration of a 'built' engine in this car, this should be plenty.

              Any aftermarket fuel pumps that won't require me using zip ties or something to hold it on the bracket properly?

              Comment

                #8
                There is a Sticky thread (Fuel Pump Upgrade) in this forum that outlines what's needed to fit aftermarket pumps into pre-1990 tanks. Sorry, I forgot what year your car is?

                Also, when reading that thread, skip down to the bottom of page 1; I initially used radiator hose to fill the boot; and discovered that it was the wrong hose to use. I later (bottom of the page) replaced that with fuel filler/neck hose instead.
                Last edited by packman; 04-15-2021, 12:11 PM.

                Comment

                  #9
                  Originally posted by packman View Post
                  There is a Sticky thread (Fuel Pump Upgrade) in this forum that outlines what's needed to fit aftermarket pumps into pre-1990 tanks. Sorry, I forgot what year your car is?

                  Also, when reading that thread, skip down to the bottom of page 1; I initially used radiator hose to fill the boot; and discovered that it was the wrong hose to use. I later (bottom of the page) replaced that with fuel filler/neck hose instead.
                  Gave it a look and it makes sense.

                  Will I have too much fuel pressure if I run too much fuel pump? Or is there a return system on our cars to account for this? Because my current fuel system is fine as far as condition of the lines and such goes.

                  Comment

                    #10
                    Fuel pressure regulator (FPR) adjusts your fuel pressure; regardless of your fuel pump volume. Stock FPR is located on the driver side fuel rail.

                    Comment

                      #11
                      Originally posted by packman View Post
                      Fuel pressure regulator (FPR) adjusts your fuel pressure; regardless of your fuel pump volume. Stock FPR is located on the driver side fuel rail.
                      I gotcha. Wasn't sure about that.

                      Does your Walbro plug in to your factory harness or did you need a wiring "kit"

                      Looking at possibly getting these three pieces if needed then:
                      https://www.amazon.com/gp/product/B0...KIKX0DER&psc=1

                      https://www.amazon.com/gp/product/B0...152QQOHM&psc=1

                      https://www.amazon.com/Walbro-400-84...HYDAN4H0FY0FWC

                      Comment

                        #12
                        I cut the Holley pump wires and spliced them onto the pump leads because the Holley pump had a plug on both ends; whereas the Panther pump wires has a plug on one end and is held in place by studs on the pump housing (on the other end). I bought a stock pump just for the housing; which has the appropriate connections on the outside of the pump. One of the pictures on the bottom of page 1 shows leads on the outlet of the pump housing. All I had to do was use the stock connectors at that point.

                        My challenge was putting the tank back up. I had to buy threaded rod to cut my own studs for that.
                        Last edited by packman; 04-16-2021, 04:16 PM.

                        Comment

                          #13
                          Originally posted by packman View Post
                          I cut the Holley pump wires and spliced them onto the pump leads because the Holley pump had a plug on both ends; whereas the Panther pump wires has a plug on one end and is held in place by studs on the pump housing (on the other end). I bought a stock pump just for the housing; which has the appropriate connections on the outside of the pump. One of the pictures on the bottom of page 1 shows leads on the outlet of the pump housing. All I had to do was use the stock connectors at that point.

                          My challenge was putting the tank back up. I had to buy threaded rod to cut my own studs for that.
                          Ah, heard that. I didn't know if that was gonna be the same or if this was a different iteration of the car with the 255 installed.

                          So, for the sake of being prepared, I'll probably get those three things then and see how it turns out.

                          Comment

                            #14
                            That’s basically what I did. I did the fuel pump upgrade and the throttle body modification long before I parked the car.

                            Comment

                              #15
                              Originally posted by packman View Post
                              That’s basically what I did. I did the fuel pump upgrade and the throttle body modification long before I parked the car.
                              Oh, awesome. Thank you!

                              Comment

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