Katerina Swanson
The 1978 Ford F-250 is a vintage truck with a range of fuel tank options. The truck's fuel tank can be mounted behind the rear axle, with the vent towards the front of the truck. The fuel tank can also be a side mount or rear mount, with the side-mount design being true to the original factory setup. The 1978 F-250 also has the option of a high-capacity tank, which requires the modification of the sending unit.
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What You'll Learn
Fuel tank mounting hardware
The 1978 Ford F-250 has a range of fuel tank options available, with different mounting hardware to consider.
Fuel Tank Senders
Universal fuel tank senders are available that mount with five mounting screws. They work on fuel tanks from 6 to 24 inches deep and can be cut to length using the included instructions.
Fuel Tank Straps
For the 1978 F-250, you can choose between side-mount and rear-mount fuel tank straps. The side-mount straps are designed for 20.2 or 22.5-gallon tanks and are manufactured in stamped steel to the correct factory dimensions. They come with a black EDP coating to prevent rust and corrosion. The rear-mount straps are available for both upper and lower sets and are suitable for 19-gallon tanks. Like the side-mount straps, they are also manufactured in stamped steel and come with a black EDP coating.
Fuel Tank Anti-Squeak Set
This set includes two rubber strips that are inserted between the gas tank and the mounting straps to eliminate any noise from tank movement and vibration. It also includes a foam rubber pad and two rubber strap-to-tank cushions.
Filler Necks
Billet aluminum flush mount filler necks are available and are suitable for non-stock fuel filler locations or when relocating the fuel tank.
Fuel Tank Capacity
There are various fuel tank capacities available for the 1978 F-250, including 19-gallon, 22.5-gallon, and 38-gallon options. The 38-gallon option is an optional high-capacity tank that requires modification of the sending unit as per the instructions provided.
Fuel Tank Mounting Location
The fuel tank for the 1978 F-250 is typically mounted behind the rear axle, with the vent towards the front of the truck.
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Fuel tank straps
When it comes to replacing or upgrading your fuel tank straps, there are several options available in the market. You can find fuel tank straps made from various materials, each offering distinct advantages:
- Carbon Steel and Stainless Steel Straps: These straps are known for their durability and reliability. They are often treated to be corrosion-resistant, preventing wear and tear caused by exposure to hazardous environmental materials. Stainless steel straps, in particular, offer excellent resistance to corrosion.
- Aluminum Straps: Aluminum fuel tank straps are lightweight yet sturdy. They are also corrosion-resistant, making them ideal for withstanding the challenges of off-road conditions.
- Rubber Straps: Rubber fuel tank straps, or isolators, are used in conjunction with metal straps to reduce noise caused by tank movement and vibration. They act as cushions between the fuel tank and the mounting straps, providing insulation and reducing metal-on-metal contact.
When choosing fuel tank straps, it is essential to consider compatibility with your vehicle's make and model. Universal fuel tank straps, such as those offered by Mytee Products, are compatible with various truck brand names, including International ProStar, Freightliner, Kenworth, Mack, and Peterbilt. Additionally, some straps are designed for specific vehicle models, like the zinc chromate fuel tank strap bolt for 1974-81 Camaro and Firebird models.
Finally, fuel tank straps come in different sizes and configurations to accommodate various fuel tank shapes and capacities. It is crucial to select the correct strap dimensions, including width, thickness, and length, to ensure a proper fit and secure mounting of your fuel tank.
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Fuel tank capacity
The 1978 Ford F-250 pickup truck has a fuel tank capacity of 19 gallons, according to Tanks Inc. However, there are also mentions of a 38-gallon rear fuel tank for 1973-1979 Ford F250 trucks, and a high-capacity option of 38 gallons for the 1978 model.
The 1978 Ford F-250 is a classic truck with a dedicated following. Owners and enthusiasts of these vehicles often seek to restore or upgrade them, and fuel tank capacity is a key consideration.
The standard fuel tank on the 1978 F-250 has a capacity of 19 gallons. This is a rear-mounted fuel tank, and it is compatible with Ford F-series trucks from 1973 to 1979, including the F100, F150, F250, and F350 models. This fuel tank is manufactured with stamped steel to the original factory dimensions and specifications, ensuring a precise fit for the truck.
There is also an option for a larger, 38-gallon fuel tank for the Ford F-series trucks. This larger tank is also a rear-mounted design and is compatible with the same models as the 19-gallon tank. The 38-gallon tank is offered as an optional high-capacity upgrade for the 1978 Ford F-250, and it requires a modification of the sending unit as per the instructions provided.
In addition to the standard and high-capacity rear-mounted fuel tanks, there are also side-mount fuel tanks available for the Ford F-series trucks. These side-mount fuel tanks offer a capacity of 20.2 or 22.5 gallons and are designed to fit the 1973 to 1979 models. The side-mount design retains the authentic look and functionality of the original factory setup, while also providing durability and reliability.
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Fuel tank restoration
Fuel tanks located under the car are prone to rusting, especially from the inside out. Petrol leaks are a sign that the corrosion has completely penetrated the tank's structure. Before this happens, the petrol will be contaminated with rust particles, which can block fuel filters and clog jets. This is often caused by leaving a classic car standing for long periods and the ethanol in modern petrol, which absorbs water during long-term storage, speeds up corrosion.
If you catch the rust early, you can reclaim your tank with a specialised sealer and avoid the cost of a new tank. Simply stripping the inside of the tank will cure the problem initially, but rust will return. For complete future-proofing, the tank must be treated with a tank sealer.
There are several fuel tank restoration kits available, such as the KBS Coatings kit, which includes a sealer, rust remover, and metal etch/cleaner solutions. The latest POR 15 kit from the USA is also recommended as it is designed for fuel with high levels of ethanol.
- Clean the exterior of the tank, especially the area around the fuel level sender.
- Remove all loose debris, rust, and scale from the inside of the tank. AquaKlean, diluted 1:1 with hot water, can be used to aid in this process. A length of chain or some loose nuts and bolts inserted into the tank can help with agitation.
- Rinse and drain the tank with water until the solution is clear.
- Inspect the interior of the tank with a flashlight via the fuel level sender bung.
- Repeat the cleaning process as needed until the tank passes inspection.
- Once the tank is clean, dry it thoroughly.
- Apply a rust treatment solution, such as KBS RustBlast.
- Seal the tank with a suitable product, such as Gold Standard Tank Sealer or POR-15 Fuel Tank Sealer. Ensure the solution is mixed thoroughly and coat the entire interior of the tank.
- Reassemble the tank, fitting a new rubber seal.
If you are restoring a 1978 Ford F-250, you can purchase reproduction parts such as rear mount lower gas tank straps, fuel tank anti-squeak sets, and billet aluminium flush mount filler necks.
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Fuel tank maintenance
To prevent rust, apply a small amount of lithium grease to filler caps and inspect the gasket at the bottom of the cap to ensure a good seal. Vents, fittings, and pipelines should be visually checked every week for signs of leaks or damage, and a physical check for bolt tightness, paint deterioration, and the general condition of pumps, vents, and valves should be conducted every six months. It is also important to check the quality of your fuel, as poor-quality fuel can damage your tank and equipment.
Additionally, consider investing in a double-walled tank or including a secondary containment area to prevent leaks and spills. Fuel storage tanks should also have fire-guarding or vaulting that can prevent fuel ignition for at least two hours in case of an emergency. Finally, keep a record of your findings after each inspection and plan for any additional maintenance or periodic tests that may be required.
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Frequently asked questions
A 19-gallon fuel tank with a lock ring kit included is a suitable option for a 1978 Ford F-250. This tank is corrosion-resistant and has been engineered and tooled under OE specifications.
The fuel capacity of a 1978 Ford F-250 is 38 gallons.
The fuel tank sender is a device that reads the resistance to the ground. It mounts with five mounting screws and works on fuel tanks from 6 to 24 inches deep.
The 1978 Ford F-250 has rear mount and side mount options for its fuel tank.
