72 Jimmy Fuel Tank Question

[audaciousduo]

So,

I'm up to my eye balls in a 72 Jimmy build and after much head scratching and many years of building off road trucks I've elected to go with a TBI kit for the new crate motor. I love carburetors when I'm building muscle cars but hate them off road. I live right in the Rocky mountains and most places I take my fly rod are remote and require some steep inclines and declines. I'm sure there are other opinions but I've owned many a 4x4 and never had any luck with carburetors and steep inclines.

Now for the question regarding the gas tank. The system I've chosen is a closed system which requires a return line. That line would preferably feed into the bottom of the tank so as not to create a whole lot of bubbles. There are three lines going into my tank, one being the draw line with the fuel gauge and the other two on the top on opposing sides to do with the charcoal filter evap system. Does either of these lines have enough of a nipple on inside the tank it to clamp a length of fuel line to it for a return line? Or has anyone figured out another way to set up a fuel return line?

Thanks in advance

[jaros44sr]

First off, welcome to the boards

Second off, i am using a in tank fuel pump from a 2002 camero (f body) in our factory tank

Check them out on racetronics site

[jaros44sr]

Forgot to mention...ive seen some of these fuel pumps hooked up to be returnless

[Haggar]

Originally Posted by jaros44sr

First off, welcome to the boards

Second off, i am using a in tank fuel pump from a 2002 camero (f body) in our factory tank

Check them out on racetronics site

Did you adapt the Camaro pump to your existing fuel sender, or did you do anything to add a sump or complete fuel module?

I'm researching this issue as well. I have a replacement Poly tank in my 71 Jimmy, and am starting in on swapping in an LS2/700R4/NP208. I'm trying to find a clean solution for the fuel tank. This truck will drive on the sand dunes, so fuel slosh @ big angles is a real possibility. The typical off the shelf solutions like the Aeromotive Stealth or Tanks Inc are designed for a max depth of about 11", which the tank is between 12-13" deep. The tanks inc setup could be modified easily enough..

[audaciousduo]

Originally Posted by jaros44sr

First off, welcome to the boards

Second off, i am using a in tank fuel pump from a 2002 camero (f body) in our factory tank

Check them out on racetronics site

Thanks for the welcome. I'm not that knowledgeable about fuel injection and went the easiest, more expensive route and bought a complete kit from affordable fuel injection http://www.affordable-fuel-injection...ystem-5-9.html as I didn't want to mix and match. This kit comes with the whole works and hopefully will save me some time which seems to be my scarcest commodity. There are fuel line return kits http://www.jegs.com/p/Moroso/Moroso-...43759/10002/-1 but I can't find one that fits the odd size 1 3/8 inside diameter blazer filler tube. I'm considering scrapping the whole charcoal evap system but am concerned if I use one of those grommets as a return the fuel will be dropping from the top of the tank causing bubbles? Guys (my self before kids and dogs) who build drag racing cars will put foam in the bottom of the tank to prevent sloshing, foaming and fuel starvation. I may be just over thinking it as I have a tendency, bordering on disorder for overkill. After all, there is no kill like overkill.

[yoncey]

SUBSCRIBED....Nice find on the EFI kit, I am interested to see your final result and what exactly you did!
I also am thinking about scraping that pesty lines for the evap system.....do not see the benefit in still having them?

[jaros44sr]

Originally Posted by Haggar

Did you adapt the Camaro pump to your existing fuel sender, or did you do anything to add a sump or complete fuel module?

I'm researching this issue as well. I have a replacement Poly tank in my 71 Jimmy, and am starting in on swapping in an LS2/700R4/NP208. I'm trying to find a clean solution for the fuel tank. This truck will drive on the sand dunes, so fuel slosh @ big angles is a real possibility. The typical off the shelf solutions like the Aeromotive Stealth or Tanks Inc are designed for a max depth of about 11", which the tank is between 12-13" deep. The tanks inc setup could be modified easily enough..

Not sure about poly tank, mines steel, and used oem location and unit. 90 ohms, as compred to the 2002 f body, not sure, it was in the basket style fuel pump unit. Our tanks are 13 1/2 at the deepest spot, so you can go s-10, or modify the camero unit to fit.....
Hope this makes sense, as i am now confused, and i wrote it

Originally Posted by audaciousduo

Thanks for the welcome. I'm not that knowledgeable about fuel injection and went the easiest, more expensive route and bought a complete kit from affordable fuel injection http://www.affordable-fuel-injection...ystem-5-9.html as I didn't want to mix and match. This kit comes with the whole works and hopefully will save me some time which seems to be my scarcest commodity. There are fuel line return kits http://www.jegs.com/p/Moroso/Moroso-...43759/10002/-1 but I can't find one that fits the odd size 1 3/8 inside diameter blazer filler tube. I'm considering scrapping the whole charcoal evap system but am concerned if I use one of those grommets as a return the fuel will be dropping from the top of the tank causing bubbles? Guys (my self before kids and dogs) who build drag racing cars will put foam in the bottom of the tank to prevent sloshing, foaming and fuel starvation. I may be just over thinking it as I have a tendency, bordering on disorder for overkill. After all, there is no kill like overkill.

I didnt use the filler neck as a return, mine is in the fuel pump