I have been exploring my options to relocate my fuel tank inside of the frame rail. The problem which I am encountering is the filler neck. I have found several alternatives in catalogues to assist with this problem. I also have seen several different options on trucks at shows. I really don't want an unsightly fuel door plastered to my fenders, especially if I have to purcase brand new fenders. The filler kits through the bed floor are interesting but I still have reservations. With the addition of my new running gear, I have very limited space under the cab. I would really like to relocate my fuel tank behind the rear axle to help place more weight on the rear axle. Are there any other options which I may need to explore?

 

Depending on the Year truck you have, you could use the Mid-frame Saddle Tanks off of a Panel Truck of the same year & use the Indented Filler Spout from it as well.

 

I have a 1970 Mustang 22 gallon tank behind my rear axle on my 1948. I like it there much better than behind the seat in the cab. My filler neck is also in the bed floor. It also helps out with weight transfer when I go drag racing.

hotrod48

 

Galleries would'nt pull up so I could'nt get a look at your truck, but if you have the space and also have or plan to have the tag in the center of the roll pan or just below the tailgate, you could do a setup like the cars of the 70's....put a spring on the license tag and hide the gas filler behind it in some way...no cuts in bed floor or fenders.

Ed

 

I like the idea of the tank in the rear, but where do you put the spare tire?

 

I've Been Thinking Of Moving Mine To The Back.what All Do You Have To Do To Make The Change?how Do You Mount Your Tank?i've Heard You Have To Box In Your Frame And Move The Rear Crossmember.any Thing Else One Might Want To Know About Before One Starts?
Art

 

On my current 56 I put a Mustang tank behind the rear axle. I did have to notch the rear crossmember near the frame rail. You can see pics in my gallery of the installation. I took the tank to a radiator shop and had them relocate the filler to be in the center of one of the bed boards. If you use a Mustang tank add a vent connection. I'm selling this 56 and am going to build another so I will be going through this again. I think this time I want to locate the filler out of the bed. May even look into the saddle tanks noted in this thread. Good luck.

 

Art, using the 17 gal. tank from no limit does not require moving or notching the rear crossmember. However, if you want their 21 gallon tank, you need to flip and move rear crossmember to back of frame rails.

Also, if you want filler neck in fender it requires a notch on top of frame. (reverse c-notch)

I,ve had the in bed filler necks and it seemed that no matter how careful you are that you get drips of gas on the wood sometimes, eventually ruining the finish.

The fuel doors from Hagan look pretty good in the rear fenders.

But what do I know. Wayne

 

I have installed a fuel tank from a mid 80's Blazer in my truck. they come in two sizes, 24 and 31 gallon and fit between the frame rails. I made my own crossmembers and used the Blazer mounting straps to mount the tank. I'm not sure about where to put the filler neck yet but I'll probably put a filler door in the fender.


Good luck
Bobby

 

Kerry,

here's what I did on a mustang tank install.... started with a 17 gal and moved up to a 20

hope it helps
john

http://www.clubfte.com/users/jniolon...ustangtank.htm

 

Thanks For The Info.i'll Keep Them In Mind.i Just Need To Talk My Better Half Into Letting Me Move It.now She Wants It Behind The Seat.
Art.

 

I do NOT like the idea of my gas tank located at my back. I have thought about locating the tank behind the rear axle and installing the filler neck behind the rear roll pan hiding it behind the license plate as suggested in this thread. I am still podering my options for rear susension, but these are the kinds of things that you must consider when weighing all of your options. I am looking for an inexpensive 4 link with coil over shocks to assist better with weight transfer. This should leave me plenty of room behind the rear axle I hope.

 

I relocated mine to the rear with Kustom Tanks was the least expensive aluminum tank and put the filler in the left rear fender with a Ford porbe gas door.
http://img.photobucket.com/albums/v313/ke6bnl/50F1.jpg

works good and filles good did remove rollover valve and just raised it and used it as a vent, vented too slowe with the check ball in it. Ed ke6bnl

 

I'm not sure I understand all the interest in moving the tank... is just protocal if you're a "darksider", or is precautionary to having the tank explode at your backside, or is there another reason I'm missing?

Ignorantly asked, Brian

 

Don't know about the reasons for the current discussion, but some folks feel better having the fuel farther away from them and some feel it's better to have it in the most protected part of the vehicle. There are pros and cons to each.

The biggest con to having it in the cab is in case of leaks. If you smoke, turn on a light switch, start a fan motor, or do anything to cause a spark and you have enough gas fumes in the cab - POOF! Personally, I think you'd probably have passed out before the fumes got that thick. The plus side is that the cab location is in the most protected part of the truck.

The down side of moving the tank to the rear of the frame is that it's more exposed in an accident. The plus side is that you don't have to worry about gas fumes in the cab and you get more behind-the-seat storage.

I remember a long discussion of this a while ago and there was some data from NTSB that said it was a toss-up. If you get hit hard enough in one of these trucks to bust up the fuel tank in the cab, you are probably not going to be in any shape to care. There is some advantage to having the tank farther away if it starts burning, but if it explodes there's no safe place to be. I guess after a lot of reading I decided it wasn't worth worrying about since I wanted a stock truck and don't care about the extra storage. That doesn't mean moving the tank is a bad idea for everyone, though.