Late '80's rear fuel tank?

[DZL JIM]

Supposedly the '87 - '89 F-350 trucks came with a 38 gallon (maybe larger?) rear tank. We are working with a poly tank manufacturer to replicate these tanks from poly to run in our Diesels and add extra capacity.
They said they have a gap in their schedule and are seriously considering making these if we can get it all togther.

So I figured you guys, if anyone, would know about these.

I need as much info as possible, like what models they came in, or were offered in, etc. Maybe total overall size of possible?

And if anyone has one, possibly rusted out that the tank manufacturer can use to make their molds would be awesome. They are offering to pay shipping to them. We can buy these tanks new, in steel, but we believe poly is the way to go.

ANY info here is greatly appreciated.

Thanks.

 

[icanfixall]

the rear tank capacity is 17.4 gallons and the front tank is 19.2 gallons. Where did you get the infrmation the rear tank held 38 gallons.....

 

[h2odrx]

I've got one out of an 88 but it is not large, those where special order?

 

[jperecko]

I think I remember a gmc jimmy or maybe some ford small SUV that had a 30 or maybe bigger gallon tank that could easily be swapped for one of ours... but I do not know of a pickup... 38 combined between the 2 tanks maybe?

 

[gonecrazyi]

I dont know who made it but Ive got a 38 gal tank in my truck. The way its mounted it could be stock.

 

[jperecko]

I found it for ~160 from RockAuto for a '87-'89 F350 gassers... maybe just buy one to use for the mold?

 

[razorback]

ford bronco has a 38 gallon tank and should be almost a direct replacement. i think its the cheapest way to get one.

 

[icanfixall]

My truck came stock with the 17 and 19 gallon tanks.

 

[david85]

Some trucks came with a larger rear tank that drops down into the space that would normally be taken up by the spare tire. 38 gallons does ring a bell but I'm not 100% sure of the exact capacity. Some one on the other forum has one in his truck.

Go to page 17 on this PDF and you will see some diagrams that show the larger rear tank:
http://www.garagenet.biz/tanks&lines.pdf

 

[Double-S-Diesel]

the f -superdutys, and the 350 cab and chassis had a larger rear tank.

 

[DZL JIM]

The Bronco tanks were 33 gallons, I have on in one of my trucks. They aren't an exact fit, but fit OK.

Problem with getting a new tank is who's going to pay for it? I know I want a poly one but I can't dish out $200 for a tank to send to someone else AND pay for a poly tank when they become available. Manufacturer wants an old rusted tank (free), they'll cover shipping.

the f -superdutys, and the 350 cab and chassis had a larger rear tank.

That's what we were thinking. Now I just need to find a used one...

Thanks.

 

[towcat]

the f -superdutys, and the 350 cab and chassis had a larger rear tank.

you're right on the '99 and up models.
frame is of different dimensions though.

 

[gonecrazyi]

I have a rear tank for an 86 cab n chassis truck. I believe its plastic and is bigger then stock. All you would have to do is rig up a plate to hold it up being that I already took the truck to scrap and left the steel mounting cradle.

 

[Double-S-Diesel]

you're right on the '99 and up models.
frame is of different dimensions though.

my 94 F-SD at work has a 38 gal poly rear tank, as does my buddys 92 f-SD
but the frame is differnt on them also

 

[DZL JIM]

Yes, I didn't think about the narrower frames, but those tanks would still bolt up OK. Narrower is better than wider.

Could you get overall dimensions of that rear tank?

Thanks.