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I went through the bed floor, I wanted to keep it simple and was not willing to cut into the bed side.
We tacked two tabs to catch it when you close the door. I'm going to add an earth magnet to keep it from rattling when driving.
Got it! I had seen other posts where people did something similar. I have a bunch of body work to do anyhow so I will be cutting a hole in the side of my bed and welding in a fill door. A little more welding and sanding won't matter much in my case. This project has already been delayed a lot longer than planned so I figure I may as well take the time to do the gas door the way I want it. I am not real enthused about having it in the bed floor because I plan do do some road trips with the truck and I assume I will be carrying stuff in the bed on those trips that might limit my access. I think it is on this forum where someone built a fuel fill in the bed on the left side, but inside the bed. It was a real nice job as well and avoids cutting in a fill door.
There's a lot of ways to get it done and in the end you're the one who has to be happy with it. Best of luck and make sure to post pictures so we can enjoy your build. ~Pat
F100, I am with you as I will be using my truck so the bed will have stuff in it so was not an option inside the bed.
warning newer model:
I also wanted it to look factory stock on a model, flare side, that did not come thru with duel tanks, only a 16 gal. side tank.
I had a parts truck I used the rear 19 gal tank and all the duel tank parts, wiring / valve / switch & control panel inside to look stock.
I was lucky the fill goes in the rear fiber glass fender, stock is in the front of the wheel mine is added to the rear of the wheel.
I did find out when doing this that style side & flare sides use 2 different fill doors.
BTW I do have my share of welding in on this truck with floors, rockers, cab corners, inner & outer lower left door replaced and I used the style side long bed floor cut down to short bed size and made to replace the wood floor as just the cross braces were $1000. Cab & bed off frame rebuild.
Little more body work and I can get paint on it.
Dave ----
If you go with a Mustang tank and it will fit, use either a 1969(20gal) or 1970(22 gal). That is 4 or 6 more gallons then the 1965-1968 16 gal tank. They are the same size side to side and front to back. Just instead of being flat(level with the flange/seam) on top they are taller. That's what I've put in the '66, '67 & '68 Mustangs I've built. More driving range.
If you go with a Mustang tank and it will fit, use either a 1969(20gal) or 1970(22 gal). That is 4 or 6 more gallons then the 1965-1968 16 gal tank. They are the same size side to side and front to back. Just instead of being flat(level with the flange/seam) on top they are taller. That's what I've put in the '66, '67 & '68 Mustangs I've built. More driving range.
That is nice in the Mustang where the tank is the truck floor thing is when used in the truck under the bed will the top clear the bottom of the bed floor?
That would be the only thing I would be worried about. Maybe it could be lowered to cleared as I don't know how it would be installed in the truck.
Dave ----
My understanding is it fits between the rear frame rails and the lip of the tank site on the frame rails. I believe it requires the spare tire to be relocated. If when sitting on the top of the frame the taller '69 & '70 tanks would not clear the bottom of the bed you could likely mount it on the bottom lip of the frame.
There are likely some post on here from folks that have done the Mustang install.
Here is one I found with a quick search: https://www.ford-trucks.com/forums/5...fuel-tank.html
My understanding is it fits between the rear frame rails and the lip of the tank site on the frame rails. I believe it requires the spare tire to be relocated. If when sitting on the top of the frame the taller '69 & '70 tanks would not clear the bottom of the bed you could likely mount it on the bottom lip of the frame.
There are likely some post on here from folks that have done the Mustang install.
Here is one I found with a quick search: https://www.ford-trucks.com/forums/5...fuel-tank.html
Thanks for posting that and the link as I am sure it will help others wanting to run a rear tank.
Being I have an 81 F100 they came with rear 19 gal tanks from the factory with the spare mounted under it.
They make a 38 gal tank (Bronco?) we can fit in and yes it hangs down lower and cant use the rear mounted spare tire but it's 38 gals!
Add the 16 gal short bed or 19 gal long bed side tank and that is a lot of gas ........... to pay for!
Dave -----
I don't know if I need a 30+ gallon tank, but This spring I was driving my 95 F150 about 400-600 miles a week and I would have loved a big tank. I had to pay for the gas either way so the miles per tank would have been helpful. Some weeks I put gas in 3 times. It got pretty old stopping for gas all the time.
I don't think I will be going with such a big tank in my 65 but I would like to shoot for close to 25 gallons. I will be using a crown vic donut for a spare so I hope to fit it under the tank in the stock location.
What year mustang tank has a 22 gallon capacity and electric fuel pump? I considered a mustang tank but models I looked up were only like 16 gal or so. But I didn't look too hard after I saw the smaller tank. I was hoping to go with a tank at least 20 gallons. I was going to attempt a bronco tank between the frame rails but haven't had time to work on that angle just yet. I have a 95 F150 with a rear tank but I think it is a 19 gallon and I would really like to go bigger. I have to stop for gas too much as it is. If I could squeeze a 25-30 gal tank under my 65 it would be great! Just afraid a tank near 30 gal would hang down too much?
My '86 has a option for a 38 gal tank but I chose to go with the 19 gal and keep my spare mounting onder the tank...the 38 gal you loose that option.
A real cool trick, if it could be done, would be to relocate the filler neck behind one of the tail lights and have it swing up, down or sideways. Like the tri-5 chevys and caddys.
I relocated my fuel tank which I purchased from LMC. I did not use the straps but bolted it directly to the frame. Make sure you think the bolting through in vase you need to remove the tank for some reason because once the bed is on, it becomes much more difficult to remove.
I am going to use an RDS 40 Gallon Rectangle Notched Diesel Auxiliary Fuel Tank #70387 with a RDS Low Profile Crossover Automotive Toolbox - 71380. Need the box for storage so decided to mount it on top of aux tank , will mount the spare under bed
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