electric fuel pump install

[STROKED71]

i have a 71 satillight, i want to install an electric fuel pump, msd says to mount it lower than the gas tank, but there is nothing lower to mount it to, any ideas

 

[Moparmatt72]

Are you using the factory tank or going to a fuel cell? I went with a fuel cell on my 72 sat and mounted the pump on the frame. But have also seen pump in the trunk next to the cell. Az long as the pick up is on the lowest part or either factory tank or cell the pump can be mounted any where. Just need to make sure when you first start the car after your done just empty the first amount of fuel into something due to possible air bubbles but once its solid hook it back up and have fun. My .02 unless someone has a better way. Another bonus look into fuel pump controller aero motive has a great one that pulses the pump to the demand driven off your rpms

 

[Budnicks]

I mounted mine to the frame rail low on the pass. side, near the front of the rear leaf spring suspension mounts on the inside, of the front portion of the rear lower part of the frame rails, away from exhaust or moving parts & heat... Mine an Aeromotive S/S 12 psi 250gpm on my 68 RR is actually mounted the same place the sub-frame connectors are mounted at the rear & a then a Aeromotive canister style/serviceable fuel filter, somewhere before the fuel pump {also a serviceable fuel filter, up just before the carburetor}, my primary filter is up in the recessed area, of the rear upper shock mounts, with some home made fabricated brackets... The electric fuel pump, will pull the fuel up thru so the primary filter, so it can be higher than the pickup/tank if necessary.... I highly suggest, for safety, make sure you use an manual over-ride/arming toggle/rocker switch {don't just wire it to the battery or ignition/key switch or 12vt pos.} & use an electronic relay to wire your electric fuel pump, to the arming switch, route your wires separately from the fuel-lines {use relays on any electronics fans or pumps, to avoid excessive draw & voltage spiking, with constant voltage, runs cooler} & also I highly suggest that you use an adjustable fuel pressure regulator nearest the carburetor as convenient/possible {Mainly for racing or a really hot street/strip car, I prefer a bypass-style fuel pressure regulator, they are better for constant flow & pressure, but they are more expensive & you also will need a separate, return line back to the fuel tank & an available nipple, either into the tank, the filler tube or sending unit etc., to go that route} that's my $0.02 cents

 

[STROKED71]

sorry i didn't give enough info, im using the msd atomi fi with their 625 hp fuel pump and stock fuel tank, right now i have made a bracket and secured it with the tank strap under the tank, but was looking a better idea, seems like the framrail is higher than the tank, would it still work, send pic's

 

[Stumper]

Just to be clear, the inlet to the pump (not the entire pump) should be below the tank - and the outlet on the tank should be near the bottom of the tank (not top). You don't want the pump inlet properly placed and then have it trying to suck fuel out of the top of the tank either.

 

[Budnicks]

sorry i didn't give enough info, im using the msd atomi fi with their 625 hp fuel pump and stock fuel tank, right now i have made a bracket and secured it with the tank strap under the tank, but was looking a better idea, seems like the framrail is higher than the tank, would it still work, send pic's

Maybe on a 71 it is, but I think the most forward "front inner-portion" of the "rear frame rails section" that goes under the car, toward &/or near & above the "front leaf spring mounts", is lower than the fuel tank still & it gives some protection for the pump... The same thing I had said in the earlier post about filter's & a regulator, still applies to an EFI system "especially the By-Pass Style Fuel Pressure Regulator & Return line, that goes back to the fuel tank", mandatory with any FI system... you could always also either buy or make a fuel tank with a fuel sump & fitting added to it also... Mine is a 3 Holley 2bbl/6bbl Carburetor system, but the basic concept still will work, with the right pump & regulator/bypass line, I may take a photo, sometime latter when I get a chance...

- - - Updated - - -

Just to be clear, the inlet to the pump (not the entire pump) should be below the tank - and the outlet {or the bottom of the pick tube} on the tank should be near the bottom of the tank (not top). You don't want the pump inlet properly placed and then have it trying to suck fuel out of the top of the tank either.

I agree &/or the tanks fuel pickup tube {highlighted in blue above}

 

[STROKED71]

thanks everyone for your help

 

[womanator]

I think this is what Budnicks was talking about on a regular carb.
Mine just happens to be on the right side.
Sorry for the dust.

 

[arizona satellite]

here is how I choose to mount my Aeromotive S/S pump. the fuel cell has yet to be installed, but this gives a good look. I am sure if you decide to use a cell this may work for your 71 as well.

 

[65hemi]

Stroked71, you could use an in-tank pump for the efi.