External Electric Fuel Pump?
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New User
Joined: Feb 2013
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External Electric Fuel Pump?
'79 F-350 4x4. Is anyone using a frame mounted electric fuel pump? Long story short.....engine builder didn't put the "lobe thingy" on the end of the cam. It was built for a race car and use of a electric pump would be fine. My problem is all the pumps I have looked at say they need to be mounted lower than the fuel tanks. That won't work for me because I'm trying to keep it safe with plenty of ground clearance. I'm trying to keep from tearing the front of the engine back off to add a "lobe thingy" but definitely don't want to waste the time and money to install electric and find it doesn't work anyway. Keeping it on the frame rail by the front tank is below the rear tank but slightly higher than the bottom of the front tank. Will this still work? Or....is putting electric fuel pumps in the tanks an option?
Hotshot
Joined: Apr 2009
Posts: 14,333
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From: Stanley, VA
"Lobe thingy"=fuel pump eccentric.
Mechanical pumps work well at sucking fuel a long distance, electric pumps, not so much.
It's always advisable to mount the fuel pump as close to and as low as possible to the fuel tank.
If you want to protect the pump as much as possible, mount it inside the driver's side frame rail as close to the tank as possible. It's also advisable to power the pump through a relay.
Here's a link to an excellent thread by fmc400 detailing an electric pump installation.
https://www.ford-trucks.com/forums/1...sion-pics.html
An in-tank pump is going to require a custom made tank.
Mechanical pumps work well at sucking fuel a long distance, electric pumps, not so much.
It's always advisable to mount the fuel pump as close to and as low as possible to the fuel tank.
If you want to protect the pump as much as possible, mount it inside the driver's side frame rail as close to the tank as possible. It's also advisable to power the pump through a relay.
Here's a link to an excellent thread by fmc400 detailing an electric pump installation.
https://www.ford-trucks.com/forums/1...sion-pics.html
An in-tank pump is going to require a custom made tank.
Elder User
Joined: May 2004
Posts: 836
Likes: 2
From: Shreveport, LA
I have a Holley Redtop that's mounted inside of my frame on my 79 Bronco. It sits lower than the tank and is pretty well shielded from anything I've put it through.
I hate it because of how loud it is, but you can HARDLY hear it over the engine whilst inside the cab. Fortunately for me, I dont have to use it all the time as I now have a mechanical pump and I left the electric just for priming or backup or whatever.
If I had to do it over again, knowing what I know now, I'd go with a gerotor style pump which would probably outlast my diaphragm (or maybe it's a vane pump...who cares, it's loud and obnoxious...) pump by several times and is quiet to boot. They are somewhat more spendy than their boisterous counterparts, but OEM style longevity and quietness is the trade off.
I hate it because of how loud it is, but you can HARDLY hear it over the engine whilst inside the cab. Fortunately for me, I dont have to use it all the time as I now have a mechanical pump and I left the electric just for priming or backup or whatever.
If I had to do it over again, knowing what I know now, I'd go with a gerotor style pump which would probably outlast my diaphragm (or maybe it's a vane pump...who cares, it's loud and obnoxious...) pump by several times and is quiet to boot. They are somewhat more spendy than their boisterous counterparts, but OEM style longevity and quietness is the trade off.
Senior User
Joined: Jan 2010
Posts: 181
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I was running an electric pump for a while before I started my swap. It was a summit racing brand pump. I made a bracket out of 3/16 plate and mounted it to the cross member that was located right in front of the fuel tank. And of course put a regulator just before the carb.
it's not on the truck any more. Now I have it set up with alligator clips on the wires so I can pump fluids in or out of various spots. A handy tool when you have to replace a fuel sending unit and the tank is full.
it's not on the truck any more. Now I have it set up with alligator clips on the wires so I can pump fluids in or out of various spots. A handy tool when you have to replace a fuel sending unit and the tank is full.
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