I want to put in a 383 Stroker, fuel injected motor in my 1972 Chevelle. I read in NPG about using a new, $550 fuel tank for the pressure. I hear that I can use my old tank, putting in a hi pressure electric fuel pump (like a 80's model Ford truck pump) that has ~80 psi, and a return line to the tank. If I do this, can I use one of the 3 vent lines on my old tank that goes to the carbon canister behind the back seat as a return line inlet to the tank? And, is there some static electricity problem with doing this if the fuel has to free fall into the tank rather than going thru a dip tube into liquid level? Has anyone out there used your old tank with a fuel injection motor and put in a return line to give me some tips?
thanks,
Steve:confused:

I would ask again in the EFI section of Performance if you haven't already, but here's what I did:

I bought a factory 1972 Spectra made tank for my car-non EFI version (several suppliers, Rock Auto is one). I added a sump wedge from Comp and had a return line bung welded in on my filler neck. I use an inline Walbro pump mounted back by the tank.

I don't think those vents are going to have the size to accept the return flow. No issues with my fuel running back down the filler neck.

If I do this, can I use one of the 3 vent lines on my old tank that goes to the carbon canister behind the back seat as a return line inlet to the tank? And, is there some static electricity problem with doing this if the fuel has to free fall into the tank rather than going thru a dip tube into liquid level? Has anyone out there used your old tank with a fuel injection motor and put in a return line to give me some tips?
thanks,
Steve:confused:

Steve, what I ended up doing was pulling my sending unit out, drilling a hole, then bending some 3/8' steel fuel line. I used JB Weld to seal up the tube to the sending unit. I worked for a little while, but probably needs to be soldered or welded like the factory tube is.

-Dave

Steve, what I ended up doing was pulling my sending unit out, drilling a hole, then bending some 3/8' steel fuel line. I used JB Weld to seal up the tube to the sending unit. I worked for a little while, but probably needs to be soldered or welded like the factory tube is.

-Dave

I did the same 12 years ago, still tight & leak free :yes:

If you do a search for "MU-2021" you can find pictures of what I did using an AC Delco fuel pump module in an OEM tank. This will give you a EFI fuel supply with return line.

I would NOT run a return line into your evaporative surge tank. That tank was designed to handle a bit of fuel burping out of one of the vents. It was not designed for a continuous flow of a fairly high rate.

If you do a search for "MU-2021" you can find pictures of what I did using an AC Delco fuel pump module in an OEM tank. This will give you a EFI fuel supply with return line.

I would NOT run a return line into your evaporative surge tank. That tank was designed to handle a bit of fuel burping out of one of the vents. It was not designed for a continuous flow of a fairly high rate.
Thanks for the info. I will look into that.

Can I use my old existing tank? It is in great shape and just trying to save $$$ where I can. Can you tell me details of what you did and how I can do that with my tank? What about the vent lines to the carbon canister behind the seat? If your reply is too long for this format, I can give you my email address stevesamg@gmail.com
thanks again for the expert info!
Steve

Hmmm. Did you do a search as suggested? Did you find this thread:
http://www.chevelles.com/forums/showthread.php?t=192262&highlight=mu-2021

As to the question of doing this to a used tank... well that depends on your thoughts on heat and open flame around potential fuel fumes. Some folks give used fuel tanks respect bordering on paranoia and not entirely without reason either. If you can mitigate the explosion risk safely, then I see no reason why you could not use your existing tank.

Got your PM, sent an email back with pics and details.

I cut a hole in mine around the sending unit/pickup.

For a return I cut the tube for the pass side vent inside close to where it ends and bent it a hair then ran rubber efi line down to a sump I made out of a rectangular 3" deep metal box welded to the tank surrounding the stock pickup location.

It works fine until it gets low, then hard right turns starve the homemade sump. :(

When it gets to 5gal or so hard acceleration does this too. But all in all, it only cost me $20 for the box (license plate recess box for low rider trucks to put a plate in theirs tailgate) and some time.

A heavily experienced long time radiator shop owner here in Phx was killed a few years ago using a torch on a used tank. Killed himself, trashed the building. what's that they used say? "A word to the wise is sufficient....."

Might want to look into this:

http://www.tanksinc.com/index.cfm/page/ptype=product/product_id=84/category_id=61/home_id=61/mode=prod/prd84.htm

I just installed this into my '66 tank. My tank was truly not tall enough but I managed to get it to fit with a little modification.

I flushed the tank with super clean and water about 7 times, let it dry out in the sun for several days while I was working on other projects, then filled it with water and cut the hole using a cutoff wheel.