Help with adding efi pump to 60's tank

[69crewcab]

Grooup

have a 64 galaxie wagon that I want to do efi on.
ive done the swap with efi before by using external ppumps but would like to find a way to add an internal pump in tank.. Anyone?

[Six_Shooter]

The easiest way to do that would be to retrofit a later sender that has a larger enough opening to fit the float and fuel pump through.

Another way would be to find a pump that will will fit through the existing opening and mount it somehow in the tank.

There's no real best of one way to do this, there's only how you will do it.

Personally while I like the idea of keeping the pump cool by being submerged in fuel, I would just use an external pump and be done with it. I've done it both ways, retrofitted and internal pump and used externals and the effort wasn't worth it in the end IMO to go to an in tank pump.

[lionelhutz]

It's typically done these days using a factory fuel pump canister. Some of the GM ones are round with a big O-ring so you just come up with some way to hold it down against the tank to seal. The cool part of these newer systems is that there is a siphon pump in the canister that keeps it full all the time even when the tank is almost empty. Here is an example of this kind of install.

http://www.britishv8.org/Articles/EF...-Tank-Mods.htm

There is also kits like this. Pricy at about $500 and I'm not too convinced of the ability for it to work down to a near empty tank.

http://aeromotiveinc.com/products-pa...h-fuel-system/

I kept looking at this stuff with my Impala but the tank was about 3.5" deep so it would require an extension sump to get enough depth to fit a pump canister. I finally gave up the idea of an in-tank pump and just welded a sump onto the tank. It works great.

[EagleMark]

Or a really cool way...

http://www.gearhead-efi.com/gm-ecm-p...onversion.html

[69crewcab]

Or a really cool way...

http://www.gearhead-efi.com/gm-ecm-p...onversion.html

Thanks all ill look into it.. Looks like I need to go hunting for some Chevy pumps and tank.

just how to you braze the stuff in ?. I have a mig welder but the articles mention brazing the one and bolting the other

[gregs78cam]

Welding a flange onto the older tank should not be too hard. The older tank will be thicker and easier to weld to than a newer tank. As long as you empty the tank, and make sure there is no fuel puddled in it anywhere (rinse good with water), then blow it out with shopvac, or compressed air for a few minutes, it should be fine. The idea is to get all of the fumes out. I tig welded one into '78 280Z tank and it wasn't too difficult. Some very small vice grips make things easier. Like these:

http://www.harborfreight.com/6-inch-...ers-39534.html

[mecanicman]

Nevermind, see it was suggested already.

Nice write up in Engine Swaps magazine, by car craft, on stands now.

http://aeromotiveinc.com/2012/11/phantom-fuel-system/