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Joined: Jun 2020
Posts: 147
C
1950 Chevy 3100 216 3 Speed.
I have a 1950 3100 216. I moved the gas tank out of the cab and placed it under the bed. The fuel will no longer be gravity fed from the tank. Is the original fuel pump strong enough to move the fuel to the carburetor? Will I need and electric fuel pump to assist? If so, I’d like to hear your suggestions. Thx.


Darren
Current Project - 1950 3100 5 Window with a rebuilt 216 and 3 speed trans
Joined: Sep 2011
Posts: 1,195
B
'Bolter
A good mechanical pump should work fine.


BC
1960 Chevy C10 driver 261 T5 3.73 dana 44
1949 GMC 250 project in waiting
1960 C60 pasture art
Retired GM dealer tech. 1980 - 2022
Joined: Feb 2001
Posts: 7,369
W
'Bolter
It will work, I have one on my 1954 3100. Been on there since 2008. I did put an electric one to feed when the truck has sat for a while.


Ron, The Computer Greek
I love therefore I am.

1960 MGA Roadster Sold 7/18/2017
1954 3100 Chevy truck in the Gallery
2017 Buick Encore
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Joined: Mar 2010
Posts: 10,289
5
'Bolter
In '47-48 the tank was located mostly under the frame with the filler neck coming out of the lower edge of the bed. All years '47-'55.1 panels and suburbans had that same tank location. Yours should work fine.

Joined: Mar 2007
Posts: 5,096
Leo Offline
'Bolter
My 1953 3100 had the underbed gas tank, stock location for panels and Suburbans.

Joined: Jun 2020
Posts: 147
C
1950 Chevy 3100 216 3 Speed.
Just to be clear everyone agrees that an original mechanical fuel pump should do the job. No need to add an electric fuel pump. Thank you.


Darren
Current Project - 1950 3100 5 Window with a rebuilt 216 and 3 speed trans
Joined: Mar 2010
Posts: 290
L
'Bolter
I put a fuel tank in the back of the frame of my 52 Chevy truck as well I have a 235 haven’t had any issues with the stock fuel pump.
I also added an electric fuel pump at the back of the tank I hooked it up to a toggle switch to the ignition switch so no power unless key is on I use it to prime the carburetor for the reasons my truck sits for long periods of time
I will turn it on for about 15 seconds along with the choke .
Be careful to not run the electric fuel pump to long it could and will flood your carburetor and gas will leak on your exhaust manifold.

Last edited by latroca52; Sun Jul 17 2022 04:22 PM.

This is no longer fun
Joined: Jun 2020
Posts: 147
C
1950 Chevy 3100 216 3 Speed.
That is a great call. I like the idea of the toggle switch. Do you know the make and model of the fuel pump you used?


Darren
Current Project - 1950 3100 5 Window with a rebuilt 216 and 3 speed trans
Joined: Mar 2010
Posts: 290
L
'Bolter
Originally Posted by ChevyDarren
That is a great call. I like the idea of the toggle switch. Do you know the make and model of the fuel pump you used?
K&N got it from Amazon


This is no longer fun
Joined: Jun 2020
Posts: 147
C
1950 Chevy 3100 216 3 Speed.
Installed the electric fuel pump back by the tank. See the picture attached. Wired it up with a toggle switch as suggested. Flipped on the switch and found two connector leaks. Also go fuel to the end of the line. Stainless steel lines are difficult to know how tight you have to be. But it was clear my problem was not the mechanical fuel pump, it was air leaks. Cleaned up the gas on the garage floor. Tightened up the fittings, connected up the carburetor and stepped on the starter and the engine came alive! Thank you again for all the input. This is a great group of friends.

Attached Images

Darren
Current Project - 1950 3100 5 Window with a rebuilt 216 and 3 speed trans
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