F-100 Builder's Guide

’56 F-100 GETS TANKED

Upsizing to a 22-Gallon Fuel Tank

- Words and Photos by DON LINDFORS

ANYONE WHO KNOWS ME WILL TELL YOU I HATE going to the gas station. I’m not sure what it is, but it seems like an annoying waste of time. Because of that, I like big gas tanks and running them right to empty. I can tell you for a fact that my 2017 Super Crew will go at least 10 gallons past 0 miles to empty. Now, I know that many people will say that is not a good idea due to possible dirt or contaminat­ion collected at the bottom of the tank, but that has never caused any issues for me. .ood filters and clean tanks have been my friend, so far.

The ’56 F-100 that we have been modernizin­g from its previous hotrod roots has an Edelbrock fuel-injected 302 running through a Gearstar AOD overdrive trans to the Speedway Motors geared 9-inch rear end. It has become a reliable and acceptable MPG classic truck. But the major downfall is its small, 12-gallon aftermarke­t fuel tank, along with some other issues - filler neck is in a reallė silly place in the bed and the pickup comes out of the bottom of

the tank where it never sealed well. I thought about building a stainless tank from scratch like I did for my ’32 Ford roadster pickup, but I knew there had to be an easier way that could also be easily duplicated at home.

Reading through back issues of F-100 Builder’s Guide and various online threads about F-100 tanks, I found many options, including quite a few fabricated aluminum and stainless tanks. While all these looked like nice quality pieces and would undoubtedl­y bolt right in, most were only about 15-16 gallons. The other thing I found was that various early Mustang gas tanks fit right in the rear frame rails and were much more economical than the custom fabricated tanks, but they were still only about 16 gallons.

A big benefit of the in-tank pump was I could eliminate the small fuel pump on the frame rail that fed the Edelbrock fuel sump system and pump.

While perusing the Tanks Inc. website, I found a new tank made for ’69-’70 Mustangs and Cougars that was 22 gallons. Now we’re talking! It was just what I was looking for. A quick call to the fine folks at Tanks Inc. supplied me with the dimensions, and I found out that this tank was available with an in-tank fuel pump set up for fuel Injection and featured EFI-style internal baffling with as extra-large 4.8 liter dual tube baffled fuel tray to prevent fuel pump starvation. So, I went ahead and ordered up the tank, the EFI pump and a short universal filler neck.

A big benefit of the in- tank pump was I could eliminate the small fuel pump on the frame rail that fed the Edelbrock fuel sump system and pump. This was a great way to get the truck driving with the EFI using the older non-EFI gas tank, but it would simplify the system to a single in-tank pump. I also knew I would need new EFI-rated fuel lines and fittings so đe called Russell Performanc­e Products to discuss the options. We decided that the Twist-Lok hose and fittings would be perfect for this applicatio­n and would mate up with the Edelbrock EFI and make for a clean and easy installati­on without breaking the bank. We also had Edelbrock send a pressure regulator since we were removing the adjustable fuel sump system that had the regulator built in.

While preparing for the install, I found a really cool tool from Koul Tools called the EZ-On Hose Press that makes assembly of the Twist Lok fittings a brezze. This handy and well-made tool holds the fittings in one end and the hose in the other with hand crank knobs. You then turn a socket wrench on the end of the tool, and the hose presses right onto the fitting with no effort at all. It makes a clean and easy installati­on and works with all brands of push-on hose fittings from -4 to -16 sizes. I wish I had one of these when I did the numerous hoses on the stack injection on my last build!

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 ??  ?? 01 The aftermarke­t tank that was in the truck had the filler in a bad position: in the way of cargo and hard to reach from the back of the truck
01 The aftermarke­t tank that was in the truck had the filler in a bad position: in the way of cargo and hard to reach from the back of the truck
 ??  ?? 02 You can see how the old supply fitting, which was &min the right front lower corner of the tank, always leaked a little. It made the tank nasty looking and gave off a bit of fumes. That is why most modern tanks have the supply tube come in from the top of the tank.
02 You can see how the old supply fitting, which was &min the right front lower corner of the tank, always leaked a little. It made the tank nasty looking and gave off a bit of fumes. That is why most modern tanks have the supply tube come in from the top of the tank.
 ??  ?? 03 The first step was to remove the old filler neck from the bed.
03 The first step was to remove the old filler neck from the bed.
 ??  ?? 04
Next, we drained the tank. Because we were running a small electric pump by the tank to feed the Edelbrock fuel sump, we disconnect­ed the line and used to pump to empty the tank. It was much better than pulling the hose off the supply fitting and pouring gas all over the ground and us.
04 Next, we drained the tank. Because we were running a small electric pump by the tank to feed the Edelbrock fuel sump, we disconnect­ed the line and used to pump to empty the tank. It was much better than pulling the hose off the supply fitting and pouring gas all over the ground and us.
 ??  ?? 07
The Tanks Inc. Mustang tank was both wider and longer than the old aluminum tank, so with the Sawzall, we removed the rear cross member and took about a quarter inch off each lower frame rail so the tank would slip up into place.
07 The Tanks Inc. Mustang tank was both wider and longer than the old aluminum tank, so with the Sawzall, we removed the rear cross member and took about a quarter inch off each lower frame rail so the tank would slip up into place.
 ??  ?? 06
With the tank on the ground, Ze removed the sender Ior the Moon fuel gauge to reuse in the new tank.
06 With the tank on the ground, Ze removed the sender Ior the Moon fuel gauge to reuse in the new tank.
 ??  ?? 05 With a floor jack under the tan, we removed the bolts holding it to the frame and lowered it from the truck.
05 With a floor jack under the tan, we removed the bolts holding it to the frame and lowered it from the truck.
 ??  ?? 12 The Moon fuel sender had to be adjusted to the depth of the new tank, and we also discovered that whoever set it up for the old tank did this improperly, which is why it never registered correctly.
12 The Moon fuel sender had to be adjusted to the depth of the new tank, and we also discovered that whoever set it up for the old tank did this improperly, which is why it never registered correctly.
 ??  ?? 13 The wires for the pump feed through some really nifty fittings that have small seals inside to keep the fuel and fumes inside the tank. With that done, we installed the pump into the tank along with the fuel sender and feller neck.
13 The wires for the pump feed through some really nifty fittings that have small seals inside to keep the fuel and fumes inside the tank. With that done, we installed the pump into the tank along with the fuel sender and feller neck.
 ??  ?? 09 To set up the new Tank Inc. EFI fuel pump, we had to measure the depth of the tank to know the height to set the pump and pickup.
09 To set up the new Tank Inc. EFI fuel pump, we had to measure the depth of the tank to know the height to set the pump and pickup.
 ??  ?? 08 With the new tank held up with floor jack, we drilled mounting holes in the frame using the tank as a template.
08 With the new tank held up with floor jack, we drilled mounting holes in the frame using the tank as a template.
 ??  ?? 10 We cut the filler and return lines based on the measuremen­t we took and the chart provided with the kit.
10 We cut the filler and return lines based on the measuremen­t we took and the chart provided with the kit.
 ??  ?? 11 We then installed the pump and pickup.
11 We then installed the pump and pickup.
 ??  ?? The Twist Lok hose slips la together by twisting the hose and fitting together. Heating the hose in hot water helps soften it a little and makes it easier to install, but it still takes a bit of force. Because we like to work smarter, not harder, we found this awesome tool rom Koul Tools called the EZ-On Hose Press that makes the job a snap. The fitting fits in one end of the tool while you clamp the hose in the other end. Then with an easy turn of the ratchet, the hose slips right over the fitting for a perfect, tight fit.
The Twist Lok hose slips la together by twisting the hose and fitting together. Heating the hose in hot water helps soften it a little and makes it easier to install, but it still takes a bit of force. Because we like to work smarter, not harder, we found this awesome tool rom Koul Tools called the EZ-On Hose Press that makes the job a snap. The fitting fits in one end of the tool while you clamp the hose in the other end. Then with an easy turn of the ratchet, the hose slips right over the fitting for a perfect, tight fit.
 ??  ?? 20 5emoving the (deOErocN )XeO 6XmS 6\stem meant Ze needed an e[ternaO )XeO 3ressXre 5egXOator Zith a retXrn Oine so Ze got one Irom (deOErocN comSOete Zith the necessar\ 5XsseOO 7Zist /oN fittings.
20 5emoving the (deOErocN )XeO 6XmS 6\stem meant Ze needed an e[ternaO )XeO 3ressXre 5egXOator Zith a retXrn Oine so Ze got one Irom (deOErocN comSOete Zith the necessar\ 5XsseOO 7Zist /oN fittings.
 ??  ?? 19 :ith the hoses attached and the sender Zired Ze Zere read\ to instaOO the tanN into the trXcN Ior the finaO time. :e then ran the noses and SoZer Zire and groXnds throXgh the Irame.
19 :ith the hoses attached and the sender Zired Ze Zere read\ to instaOO the tanN into the trXcN Ior the finaO time. :e then ran the noses and SoZer Zire and groXnds throXgh the Irame.
 ??  ?? 14
The Russell Twist Lok hose and fitting system is rated for 250 psi, plenty for our EFI system, and doesn't require any clamps to secure.
14 The Russell Twist Lok hose and fitting system is rated for 250 psi, plenty for our EFI system, and doesn't require any clamps to secure.
 ??  ?? 17 The neck in the tank is slightly off center and angled rearward. We want it in the center and straight up, so a little cutting and welding made it exit where we wanted.
17 The neck in the tank is slightly off center and angled rearward. We want it in the center and straight up, so a little cutting and welding made it exit where we wanted.
 ??  ?? 16 The completed hose shows a slight bulge where the hose expands over the barbs on the fitting creating a high-pressure connection.
16 The completed hose shows a slight bulge where the hose expands over the barbs on the fitting creating a high-pressure connection.
 ??  ?? 18 After measuring where LP the filler neck would come through the floor, we drilled a new hole through the stainless strip and wood.
18 After measuring where LP the filler neck would come through the floor, we drilled a new hole through the stainless strip and wood.

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