Mid 70's C body EFI fuel tank

General Discussion

  1. Spyphish

    Spyphish Member

    Messages:
    151
    Likes Received:
    98
    Joined:
    May 5, 2018
    Location:
    Louisiana
    Anyone know of a vendor that makes a baffled tank for EFI in tank pump and return line? Or a good custom tank builder? Thinking about a Holley Sniper setup for a 74 440/727 cop Monao. Thanks

    IMG_0225.JPG
     
    • Like Like x 2
  2. dart4forte

    dart4forte Well-Known Member

    Messages:
    500
    Likes Received:
    220
    Joined:
    Jun 22, 2011
    Location:
    Mesa AZ

    Talk with Tanks Inc.
     
  3. 3C's & a D?

    3C's & a D? Well-Known Member

    Messages:
    963
    Likes Received:
    340
    Joined:
    Oct 27, 2015
    Location:
    By the tree in Edmonton
    Are you looking for an in trunk fuel cell? I somehow doubt it, that would be easy, and kind of "wrong"? If you want baffles for a stock location tank, it will have to custom. May I ask why you want them? I'll admit, I do too. Mostly to calm the sloshing down. From what I understand most of the retrofit in-tank pumps don't require them due to their design. I'm also eventually going the efi route with one of my cars. I was thinking of going with the MSD unit however, due to it's compatibility/control over timing when used with the MSD distributor, of course. I would suggest you check it out if you haven't already.
     
  4. Spyphish

    Spyphish Member

    Messages:
    151
    Likes Received:
    98
    Joined:
    May 5, 2018
    Location:
    Louisiana
    Yes I have been on the forums and read the pitfalls and successes. Some say outside pumps get hot and fail if cavitation in hot climates (me). RFI creates problems as well so wiring is critical. It could be an expensive experiment but in this years Great Race at 9000 feet we could not climb at 50 MPH with it floored. I am after the self tuning learn stuff. I am going Holley Sniper with their dizzy and ignition. The MSD stuff on the car goes to another project. Strike one today as hours of waiting to discuss system config with Holley tech. I haven't pulled trigger yet. Jake

    190623_GR_0256[1].jpg
     
  5. twostick

    twostick Senior Member

    Messages:
    1,770
    Likes Received:
    798
    Joined:
    Dec 13, 2012
    Location:
    Beautiful Downtown Roebuck Ont.
    This is one solution to allow using the stock tank with an external pump and eliminate cavitation. Not cheap from what I hear.

    HydraMat - Holley Performance Products

    You just have to modify the stock pickup/sending unit to connect it.

    Fitech has a remote tank unit that mounts under the hood with the high pressure pump and return in it and the stock fuel pump transfers fuel from the main tank to fill it. I'm sure there are other companies that make a similar unit.

    On my 66 New Yorker I just mounted a fuel cell in the trunk and and called it a day. Form follows function. Mine was just a conventional one with a bottom sump that I connected the external pump to but they make them with internal EFI pumps too.

    Kevin
     
  6. Spyphish

    Spyphish Member

    Messages:
    151
    Likes Received:
    98
    Joined:
    May 5, 2018
    Location:
    Louisiana
    Thanks, getting "canie and wormie" the more I check. Then the whole computer tuning comes into play.
     
  7. twostick

    twostick Senior Member

    Messages:
    1,770
    Likes Received:
    798
    Joined:
    Dec 13, 2012
    Location:
    Beautiful Downtown Roebuck Ont.
    Unless there are rules against it, I think the path of least resistance for you is a fuel cell in the trunk. With the bottom sump I think the only way you could cavitate the external pump would be pulling G's on a skid pad with less than 1/4 tank. Under "normal" conditions I think you'd have to be almost out of gas. The sump on mine if I had to guess, held at least a quart and the foam kept the slosh to a minimum.

    Kevin
     
  8. 5wndwcpe

    5wndwcpe Active Member

    Messages:
    338
    Likes Received:
    221
    Joined:
    Jan 22, 2018
    Location:
    S.E.P.A.
    When I was looking into this my plan was to buy a new tank and install a fuel pump recess in the top.

    Weld in Fuel Pump Recess

    This would allow you to use an in-tank pump, later sending unit and keep the original fuel fill.
     
  9. Spyphish

    Spyphish Member

    Messages:
    151
    Likes Received:
    98
    Joined:
    May 5, 2018
    Location:
    Louisiana
    Not an option, required safety equipment and ice chest of PBR in trunk. Thanks
     
    • Like Like x 1
  10. Spyphish

    Spyphish Member

    Messages:
    151
    Likes Received:
    98
    Joined:
    May 5, 2018
    Location:
    Louisiana
    That's trick but need baffles.
     
  11. Spyphish

    Spyphish Member

    Messages:
    151
    Likes Received:
    98
    Joined:
    May 5, 2018
    Location:
    Louisiana
    Actually, that will work. Will cut a long side wall off the tray and turn it sideways so it will tuck under body as embed in tank where existing outlet etc is. While that square hole is open we will custom build a baffle box to tack in tank bottom. Thanks
     
    • Like Like x 1
  12. furious70

    furious70 Active Member

    Messages:
    326
    Likes Received:
    101
    Joined:
    Aug 18, 2018
    Location:
    Chitown
    I've been running a walbro 255 on the frame rail for a decade. I ruined one in the first month as it picked up junk from the tank to hard line rubber section. After replacing that hose and the pump it's been good. It's a little noisey yes, and after 4-5 hrs of running it's noisier, but still runs fine. Supplies enough fuel to feed 12psi of turbo charged 383
    I do need to stay above 1/4 tank to avoid hiccups if I get froggy with it.