1. Welcome to For E Bodies Only !

    We are a community of Plymouth Cuda and Dodge Challenger owners. Join now! Its Free!

Fuel pump in stock cuda gas tank

Fuel and Air Systems

  1. mistreta

    mistreta Member

    Messages:
    24
    Likes Received:
    0
    Joined:
    Sep 19, 2018
    Looking to go to fuel injection in my 408 stroker cuda. I have a noisy pump mounted on the rear frame that won"t work with FI. I know tanksinc make a tank with a pump inside, but can a in tank pump work in my stock gas tank?

    Thanks
     
  2. gzig5

    gzig5 Well-Known Member

    Messages:
    131
    Likes Received:
    43
    Joined:
    May 10, 2018
    Location:
    Mequon, WI
  3. mistreta

    mistreta Member

    Messages:
    24
    Likes Received:
    0
    Joined:
    Sep 19, 2018
    Thank you for your input. I will check it out.
     
  4. rklein71

    rklein71 Well-Known Member

    Messages:
    419
    Likes Received:
    153
    Joined:
    Feb 27, 2015
    That is sweet, wish I would have done that with mine. I bet the bottom strip is a plastic piece that flexes. I guess I will run my external pump for my EFI until it dies.

    IMG_4664.JPG
     
  5. mistreta

    mistreta Member

    Messages:
    24
    Likes Received:
    0
    Joined:
    Sep 19, 2018
    What EFI did you go with rklein71? I googled above pump, looks good, but I would like to see some specs, how much it pumps. How much do I need.

    Good input
    Thanks
     
  6. rklein71

    rklein71 Well-Known Member

    Messages:
    419
    Likes Received:
    153
    Joined:
    Feb 27, 2015
     
  7. DrEamer

    DrEamer Well-Known Member

    Messages:
    237
    Likes Received:
    178
    Joined:
    Nov 3, 2017
    Location:
    Oregon
    • Like Like x 1
  8. mistreta

    mistreta Member

    Messages:
    24
    Likes Received:
    0
    Joined:
    Sep 19, 2018
  9. gzig5

    gzig5 Well-Known Member

    Messages:
    131
    Likes Received:
    43
    Joined:
    May 10, 2018
    Location:
    Mequon, WI
    Something between 250-350 L/hr should work fine for anything but full on race applications. I'm not aware of any of these aftermarket kits that are smaller than that.
     
  10. Cudakiller70

    Cudakiller70 Well-Known Member

    Messages:
    66
    Likes Received:
    24
    Joined:
    Aug 3, 2016
    I did the spectra tank with electric pump inside. It has a sump pan, maybe not the best sump pan design having radius corners verses square for fuel sloshing.
    It’s $326@ ($310 with 5% discount) 1972 PLYMOUTH CUDA 5.6L 340cid V8 Fuel Tank & Pump Assembly | RockAuto
    DE9F1BE6-D657-4359-8F20-6C463228CF21.png
    This is a 72 Cuda tank shown.
    From my tank I took the pump out, it’s a walbro, forgot the model number, but if I remember right it’s a very available one with good flow.
    I tore the pick up sock when removing pump assembly. Just as well because it was clocked wrong meaning not laying flat, but turned up. Would of worked but not ideal.
    I added the Holley hydra mat sock, probably didn’t need to, it’s expensive but should help prevent low fuel starving. Bottom picture shows how Holley sock comes with the star pump connector. You can see from my picture I had to trim all the other ears off then it fit perfectly.
    These are pictures of my tank.
    41685A6C-5C17-4958-A72E-689DA4305572.jpeg 48AF49F3-A971-46A5-A2E1-7DE542BFA86D.jpeg 2D2D7FF7-8881-4314-B8D0-3DA84C78F8A8.jpeg 378BF0D4-6BB3-4A06-89DD-3577CE63B580.jpeg AFB8A6C5-F900-460F-9EAC-B559CBAFDAF1.jpeg
     
    • Like Like x 1
  11. mistreta

    mistreta Member

    Messages:
    24
    Likes Received:
    0
    Joined:
    Sep 19, 2018
    Great pictures, Thanks for the help
     
  12. Cudakiller70

    Cudakiller70 Well-Known Member

    Messages:
    66
    Likes Received:
    24
    Joined:
    Aug 3, 2016
    FWIW
    This picture is a good example of filter sock 180 degrees in the wrong direction if your tank has a sump pan. It’ll work for an open bottom tank.
    1FDC2069-70A0-4EC9-B256-0EE7F9413674.jpeg

     
    • Like Like x 1
  13. wayne

    wayne Well-Known Member

    Messages:
    63
    Likes Received:
    42
    Joined:
    Dec 27, 2018
    Location:
    SouthEast Michigan
    Very interesting, thanks for sharing. I am wanting/needing to put an electric pump in my car and didn't really want to do an external pump back by the tank.

    With a fpr for gas this would be a great alternative for anyone with a carb.

    How were the instructions?
     
    Last edited: Sep 12, 2019 at 2:14 PM
  14. Cudakiller70

    Cudakiller70 Well-Known Member

    Messages:
    66
    Likes Received:
    24
    Joined:
    Aug 3, 2016
    Super easy to install. Will take a look for instructions. 2 wires for fuel gauge and 2 wires for fuel pump, IIRC. I installed a relay kit from summit to bring power. Also used a inertia switch wired into ground wire side, it’s from a Crown Vic Incase of accident. Ford used them in a lot of vehicles. eBay was were I got it. Picture below.
    A2E07D86-9151-405A-991F-DE5F491B6B02.jpeg
    The gauge is fairly accurate, well at least on mine.
    Pump is not super quiet you can hear it until you start it up.
    I’m using with a carb, fuel supply to a regulator that’s made for higher pressure pump feeding 5-7 psi carb.
    Also a return line. It’s ready for EFI when time comes.
     
    • Like Like x 1
  15. wayne

    wayne Well-Known Member

    Messages:
    63
    Likes Received:
    42
    Joined:
    Dec 27, 2018
    Location:
    SouthEast Michigan
    Nice, thanks for the reply. Glad to hear you are using it with a carb as that is my plan and the gauge is close on yours. Think its quiter than the typical Holley electric? Those you can normally hear over the engine at idle. I will look into the inertia switch. Might be a good option.

    Did you mount a post filter and regulator in the engine bay?
     
  16. Cudakiller70

    Cudakiller70 Well-Known Member

    Messages:
    66
    Likes Received:
    24
    Joined:
    Aug 3, 2016
    I haven’t had a chance to hear a Holley. This one is not louder than the engine LOL! Just loud enough when you flip the key you hear it.
    I’ve got the car apart for 1-2 more weeks, (hopefully) then I’ll see about a video.
    I did do a post filter even though the Holley hydro mat is 15 microns. The post filter I mounted under on the rear shock cross bar. FWIW I did it that way because both of my daily drivers truck and SUV have the gas filter mounted underneath to the frame from factory. Regulator is mounted to fire wall. Left is fuel inlet, bottom is return and right is going to carb. I want to do this routing a little different to make a loop. Holley has a good diagram of it.
    I did find tank instructions for wiring.
    33511AF5-83DB-4481-9EE9-4F76624A6533.jpeg 12235848-2B63-452E-9721-E62AEC8AF388.jpeg 20898B66-ACBC-4C1F-A07F-604835C59772.jpeg F319AF5F-82A9-489C-AE58-0D0398D51488.jpeg
     
  17. Cudakiller70

    Cudakiller70 Well-Known Member

    Messages:
    66
    Likes Received:
    24
    Joined:
    Aug 3, 2016
    Ok here’s the way I want to redo my fuel line at carb. Currently it’s done like 2a. I want to reroute so it’s like 2b. Reason is 2b is a genuine loop, there’s less fuel being stagnet getting warm.
    Probably splitting hairs but heat is a concern for carbs and modern fuel.
    DA050E17-F261-4581-A5DE-3B93BC398AB3.jpeg
     
    • Like Like x 1
  18. wayne

    wayne Well-Known Member

    Messages:
    63
    Likes Received:
    42
    Joined:
    Dec 27, 2018
    Location:
    SouthEast Michigan
    Thanks for posting. I like the 2b routing as well. I have never done a carb application that way but that is how EFI normally runs. Will have to look for a carb fuel log that fits that setup.
     
  19. Cudakiller70

    Cudakiller70 Well-Known Member

    Messages:
    66
    Likes Received:
    24
    Joined:
    Aug 3, 2016
    I’ll make my own using a tubing bender and flaring tool. Using JIC fittings which have a similar look and work like AN fittings at a much lower price. Online or from a hydraulics supply house.