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Fuel Pump for Not-Stock Engines

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    #1

    Fuel Pump for Not-Stock Engines

    I have been running through the idea of building a 351W with aftermarket bolt-ons. I'm thinking of modifying the stock in-tank fuel pump assembly to accept another fuel pump from a Mustang. I think that I saw mentioned in another thread that there is a Walbro 255 lph pump that is a direct replacement for ours. Is this so? Or is this pump for another application? I am also considering using an external inline pump for EFI. Just working out the details. Thanks guys/gals.



    Packman
    Tags: None
    #2
    the 255lph walbro mustang pump is popular. it should fit right in.
    sigpic


    - 1990 Ford LTD Crown Victoria P72 - the street boat - 5.0 liter EFI - Ported HO intake/TB, 90 TC shroud/overflow, Aero airbox/zip tube, Cobra camshaft, 19lb injectors, dual exhaust w/ Magnaflows, Cat/Smog & AC delete, 3G alternator, MOOG chassis parts & KYB cop shocks, 215/70r/15s on 95-97 Merc rims

    - 2007 Ford Escape XLT - soccer mom lifted station wagon - 3.0 Duratec, auto, rear converter delete w/ Magnaflow dual exhaust

    - 2008 Mercury Grand Marquis Ultimate Edition - Daily driver - 4.6 2 valve Mod motor, 4R75E, 2.73s. Bone stock

    Comment

      #3
      Not really a direct fit, you do have to do some modification to make it fit. Honestly, get an Airtex replacement for your car. It's rated at a bout 44gph. Doing the math it's about 166lph. That's more than enough than most engines would need. Including a 351. BTW, for inline fuel pumps, it's always easier to push the fuel out of the tank, than it is to pull it out...

      Comment

        #4
        Hmmm......I will try the Mustang 190 lph pump and modify it for the CV. If the MGM that I have been picking apart is still at the JY next Spring, I will harvest the fuel pump assembly out of it and modify that. It seems that I will have to buy the pump with the assembly if I wanted it new. I might do that after I figured out how to modify the JY assembly to work.


        Packman

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          #5
          The mustang pump is a direct bolt in on 90-91 cars. Older ones require a spacer of some sort Around the pump to take up extra room because the panther pump is physically larger.


          '90 LX 5.0 mustang
          Big plans

          Comment

            #6
            Uh huh. That's some good info. I have the old fuel pump from the CV that went bad a couple years ago. I will make the comparison and adjust accordingly. Damn.......I might brave the cold weather and go down to the JY in late Jan. or Feb. and get this stuff. Thinking about this stuff has got me anxious.


            Packman

            Comment

              #7
              It was the same issue in the '87-'88 T-birds...mustang pumps had a smaller diameter...I got by with a walbro 190lph pump and a piece of 5/16" fuel hose taking up the gap between the pump and hanger assembly...worked great and if it's the case with panther's, I'll be doing it again.

              Good luck,
              Don
              '85 CV coupe- 351W, T5-Z, FAST Ez-Efi, shorty headers, 2.5" duals with knock off flowmasters, 2.5" Impala tails, seriously worked GT-40 irons, Comp 265DEH cam, 1.7rr's, Mallory HyFire 6A, Taylor ThunderVolt 50 10.4mm wires, 75mm t/b, 3G alt swap, 140mph PI speedo, PI rear sway bar, '00 PI booster/MC, 95-97 front spindles, '99 front hub bearings/brakes, '92-'94 front upper control arms/ball-joints, 3.73's with rebuilt traction-lok, '09 PI rear disc swap, '96 Mustang GT wheels with 235/55R17's.

              Comment

                #8
                There is a bit of an issue with the depth of the pump in the tank matching up also. I still have some pics of what I did.
                Scars are tatoos of the fearless

                Comment

                  #9
                  Can I run a 190lph on a lopo? I was thinking about getting the fuel system upgraded before the engine swap. That way I don't have a ton of things to do whilst swapping engines.


                  Packman

                  Comment

                    #10
                    you can but you dont need it........the stock fuel pump provides plenty of fuel

                    1986 lincoln towncar signature series. 5.0 HO with thumper performance ported e7 heads, 1.7 roller rockers, warm air intake, 65mm throttle body, 1/2" intake spacer, ported intakes, 3.73 rear with trac lock, 98-02 front brake conversion, 92-97 rear disc conversion, 1" rear swaybar, 1 3/16" front swaybar, 16" wheels and tires, loud ass stereo system, badass cb, best time to date 15.94 at 87 mph. lots of mods in the works 221.8 rwhp 278 rwt
                    2006 Lincoln Town Car Signature. Stock for now
                    1989 Ford F-250 4x4 much much more to come, sefi converted so far.
                    1986 Toyota pickup with LSC wheels and 225/60/16 tires.
                    2008 Hyundai Elantra future Revcon toad
                    1987 TriBurner and 1986 Alaska stokers keeping me warm. (and some pesky oil heat)

                    please be patient, rebuilding an empire!

                    Comment

                      #11
                      Originally posted by Lincolnmania View Post
                      you can but you dont need it........the stock fuel pump provides plenty of fuel
                      I may need an aftermarket fuel pump for a mod'd engine. I am thinking about installing most of the fuel system up to the engine bay. Then run the adapters into the stock fuel system up to that point. When I get around to swapping engines, I would disconnect what's left of the old system (everything in the engine compartment) and pull the engine. I am trying to think ahead, but I might find that it's easier to do it all at once.


                      Packman

                      Comment

                        #12
                        i swapped a walbro 255 in an afternoon into my 91. was a direct swap. im not sure what the return line can flow but I would think a 255 would work fine in a lopo, and I get 0 pressure drop with 500hp at the strip when the nitrous kicks in... im not sure how much hp that pump will supply?
                        Finally have an on the books porting/custom fab business!
                        HO bottom end,GT40Ps,cut/welded/ported upper+lower GT40 intakes,Comp XE258 cam,MS3X megasquirt computer,8 LS2 coils,2 dry systems + a 3rd wet,3 core rad w fans..1100hp Lentech WR AOD,custom 4" aluminum/moly Dshaft,custom rear/back half chassis adjustable 4link,wilwood 4 piston,moser 9" axles,locker, M/T 30x12's,4 staged fuel pumps,100lbs sound insulation,power/remote everything,2000W sound.4480lbs. 4.5s 0-60,12.8 1/4

                        Comment

                          #13
                          I got a Holley 190lph. I spliced the pump into the stock pump housing. I have not modified the rubber boot to get the strainer into position close to the stock pump. I will do that eventually. I got stuck on the front end rebuild and the rear diff install for a month and lost track of this. Hopefully I'll get the time to finish the pump. I'm starting to think that I should have gotten a '91 gas tank with the fuel pump and sender assembly. The '86 has them as separate units; and the sending unit seems to be very difficult to find new or rebuilt.



                          Packman

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