55.2-59 Electric fuel pump 59 GMC

[72 k15]

Just wondering if anyone has put a electric fuel pump on there truck and if they liked it.

[1project2many]

Yes.
Yes and no.

I'm not sure what you're interested in, but the truck starts and runs every time I want it to so I like that. It makes some noise in the cab which isn't unbearable but could be quieter.

Do you have specific questions?

[_Ogre]

I like mine. In tank efi sort of requires it
Just keep a spare if it's not off the shelf item

[nvrdone]

ive got an aftermarket electric pump mounted next to the tank under the rear of the bed. Turn key on, count to ten to prime fuel line & crank it over. starts every time & i dont hear any noise. I also put a shut off valve in the line back by the pump. that way i can run the fuel out of the line & carb when I put the truck into storage for the winter.

[Rickysnickers]

I have EFI as well and have an in tank pump. I only hear it when I turn the ignition on and it primes the engine.

[72 k15]

Originally Posted by Rickysnickers

I have EFI as well and have an in tank pump. I only hear it when I turn the ignition on and it primes the engine.

You would have to have a new gas tank to do that?

[bosco]

Yes, for an Edelbrock carburetor (350 SBC). The first one was a Holley and was annoyingly loud in the cab, even when engine is running.

Changed it out for a Mallory, can't even hear it. Truck starts right up (almost as fast as an EFI).

[Rickysnickers]

Originally Posted by 72 k15

You would have to have a new gas tank to do that?

The existing tank was already relocated under the bed. So, in my case no. I was able to use the tank I had. It was a carb tank. I did have to drill a large hole in it for the pump setup.

[1project2many]

Originally Posted by 72 k15

You would have to have a new gas tank to do that?

No. I made a new sending unit and pump hanger. I'm still using the original tank. I have a Task Force so you may not have that option.

[mr48chev]

Yes if you are doing what he did you would need a new tank.

With a stock 270 in the 59 with a stock tank in the original location I don't see the to change to an electric pump UNLESS:

An OEM style pump is so expensive (some rare ones are) and hard to get that it is more practical.

The fuel pump cam lobe got worn down and won't work the pump right. That isn't common on inline sixes but I've seen it on Flathead V8 Fords.

Inline pump added to push gas from the tank to the carb to be able to start the engine without cranking a bunch after it sits for a length of time that can be turned off when the truck starts. It's reasonably common for guys with rigs that they don't drive much to do this. Some designs of pumps work better for it than others. Turn the key on, flip the pump switch on let the electric pump get gas up to the carb and fire the truck up. Then turn the electric pump off and away you go.

My 57 panel with the stout 327 had an electric pump that was beyond noisy. It worked good but in that panel with no insulation in the back it made a lot of racket. For some reason the previous owner thought he needed an electric pump rather than a good high performance mechanical pump and I left it that way. That truck would stay even with a 750 Honda in a two block street race though.

[72 k15]

Originally Posted by mr48chev

Yes if you are doing what he did you would need a new tank.

With a stock 270 in the 59 with a stock tank in the original location I don't see the to change to an electric pump UNLESS:

An OEM style pump is so expensive (some rare ones are) and hard to get that it is more practical.

The fuel pump cam lobe got worn down and won't work the pump right. That isn't common on inline sixes but I've seen it on Flathead V8 Fords.

Inline pump added to push gas from the tank to the carb to be able to start the engine without cranking a bunch after it sits for a length of time that can be turned off when the truck starts. It's reasonably common for guys with rigs that they don't drive much to do this. Some designs of pumps work better for it than others. Turn the key on, flip the pump switch on let the electric pump get gas up to the carb and fire the truck up. Then turn the electric pump off and away you go.

My 57 panel with the stout 327 had an electric pump that was beyond noisy. It worked good but in that panel with no insulation in the back it made a lot of racket. For some reason the previous owner thought he needed an electric pump rather than a good high performance mechanical pump and I left it that way. That truck would stay even with a 750 Honda in a two block street race though.

Main reason is I drive it occasionally and when I go out to start it I need to put gas in the carb to get it going until the mechanical fuel pump starts pumping. The truck currently has a Chevy 235 in it and I am hoping to rebuild the original 270 this summer and drop that back in.

[_Ogre]

You wouldn't want an in tank pump in your cab. It'd be a little noisy. Don't get a high performance pump, either of those motors only sip fuel. If it were me, I'd add a low pressure regulator capable of 3-7 psi

[dsraven]

if you think you need it then put an elec pump on the frame under the cab out of the heat from under the hood. wire it to a switch so you can turn it on/off when you want. run it in series with the original pump or T it in before the mechanical one, you decide. just make sure the mechanical pump can "suck" fuel through the electric pump if you simply cut it into the original fuel line. you might need a check valve either way.
some pumps run on an as needed scenario so they cycle on and off when the pressure drops. some run continuously. maybe check that before you buy.