F-100 Builder's Guide
’56 F-100 GETS TANKED
Upsizing to a 22-Gallon Fuel Tank
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!