Rajan Wilcox
The Ford Mustang is a classic car, and owners of the 1966 model may find themselves needing to replace the fuel line. The stock fuel line for the 1966 Mustang is 5/16, but some owners have debated whether upgrading to a 3/8 line would be beneficial. The 1966 Mustang's fuel line can be made from stainless steel or rubber, and there are kits available to help with installation.
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Braided fuel lines
There are a few different ways to achieve this. One method is to simply cover the existing hose with a braided steel covering and simulated AN fittings. This is a cheap and easy way to improve the appearance of the engine. The simulated AN fittings are actually regular worm gear hose clamps covered with an anodized cover that looks like an AN fitting.
Another method is to use an Edelbrock carb with a push-on fitting for the fuel line. This can be done in combination with braided hose and clamps that have an AN fitting cover. Edelbrock/Russell also offers a range of kits and adapters that can be used.
For a more comprehensive solution, it is possible to buy a new stainless steel pre-bent fuel line to go with a new tank and sending unit. This option requires more work, as it involves jacking up the car, removing the rear wheels, and routing the new line around the differential and other components.
It is important to note that the specific fittings and adapters required will depend on the type of fuel pump and carburetor in your Mustang. When replacing fuel lines, it is recommended to also replace the hardware to ensure the lines stay in place.
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Edelbrock carb
Fuel line routing is an important consideration for 1966 Ford Mustang owners, especially those with an Edelbrock carb. Edelbrock is a well-known manufacturer of carburettors and fuel systems, and their products are a popular choice for Mustang enthusiasts.
One of the key considerations when setting up a fuel line for an Edelbrock carb is the type of fuel line and fittings used. Some owners prefer the aesthetics of braided fuel lines, which can be purchased as kits from the Edelbrock/Russell website. These lines provide a "dressed-up" look for the engine and are available in different AN numbers, indicating different sizes or specifications. Braided lines can be combined with clamps that have AN fitting covers, or with simulated AN fittings that are actually regular worm gear hose clamps with anodized covers. These options are more affordable while still providing a stylish appearance.
Alternatively, Edelbrock offers fuel line kits that include reusable filters and allow for a neat installation, with the fuel line tucked in right next to the carb. These kits typically require a 6AN fitting with a 6AN hose to run down to the fuel pump, and the specific fittings needed will depend on the type of fuel pump in the Mustang.
Another consideration is the routing of the fuel line. Some owners have suggested rerouting the main fuel line away from the engine, onto the firewall and junction block, and then using a short hose to connect to a banjo with a built-in inline filter. This setup can help to reduce fuel temperatures. Additionally, the use of a 90-degree hard tubing/fitting that bolts into the side of the carb can simplify the fuel line routing, eliminating the need to run the line all the way around the engine.
For those with a 1966 Mustang and an Edelbrock carb, vapour lock is a common issue. One solution is to add an electric fuel pump to the mechanical pump or bypass the mechanical pump altogether. Another suggestion is to use an inline filter, which can be placed at the rubber hose before the fuel pump or at the connection between the banjo fitting and the fuel line.
Finally, for those looking to adjust the air/fuel mixture on their Edelbrock carb, there are several simplified instructions available online. These include steps such as warming the engine to operating temperature, connecting a tach meter and vacuum gauge, turning both air/fuel screws, and adjusting the RPM to fine-tune the mixture.
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Fuel line size
The fuel line size for the 1966 Ford Mustang depends on the specific engine configuration and performance requirements.
The original fuel line size for the 1966 Mustang with a V8 engine was 5/16". This size was also used for some inline-six engines, but it is recommended to upgrade to a 3/8" line for improved performance. The 3/8" line is particularly important if you plan to use the car on a track, as it can provide a more consistent fuel supply. The cost and installation process for a pre-bent 3/8" line are similar to those of a 5/16" line, and it ensures that your engine has sufficient fuel flow.
When upgrading the fuel line, it is crucial to follow the correct routing. The fuel line should be routed along the front frame rail and through the front apron into the engine bay, similar to a V8 engine. Attempting to use the inline-six routing can be dangerous, as the fuel line will be too close to the exhaust system.
Additionally, when upgrading the fuel line, consider the type of fuel pump and carburetor in your Mustang. Different pumps and carburetors may have specific fitting requirements, so it is essential to have detailed knowledge of your engine setup before making any modifications.
For a primarily aesthetic upgrade, braided steel lines or covers are an option. These lines not only enhance the appearance of the engine but also provide the functionality of a standard fuel line. Braided steel lines are available in various kits and can be cut and installed with AN fittings to match your specific engine configuration.
In conclusion, the fuel line size for the 1966 Ford Mustang depends on your engine configuration and performance goals. Upgrading to a 3/8" line can provide improved fuel flow, especially for modified engines or track use. Always follow the correct routing and consider the specific fittings required for your fuel pump and carburetor. For a blend of performance and style, braided steel lines offer an attractive option that also enhances your engine's functionality.
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Fuel line routing
The original fuel line size for the 1966 Mustang with a V8 engine was 5/16", while the inline-six cylinder engine used a 3/8" line. Some owners have considered upgrading to a 3/8" line to future-proof their cars and ensure adequate fuel supply. However, others argue that the 5/16" line is sufficient, even for high-performance applications. It is important to note that the size of the fuel line depends on the volume and pressure requirements of the carburetor.
When it comes to routing the fuel line, the 1966 Mustang's fuel line runs from the tank to the engine compartment. It does not go through the shock tower but instead goes through the lower part of the inner fender, across from the fuel pump. The fuel pump's rear port typically connects to the steel fuel line leading to the carburetor, while the front port accepts a rubber hose. However, some fuel pumps may have a different flow direction, so it is essential to verify the pump's design before installation.
The fuel line continues from the fuel pump to the carburetor, where it connects to the inlet. One method to simplify the routing is to use a 90-degree hard tubing/fitting that bolts into the side of the carburetor, eliminating the need to route the fuel line around the engine. This setup positions the inlet on top of the intake manifold, facing the front of the carburetor. Additionally, using Chromed L-shaped tubing can help route the inlet towards the front of the carburetor.
Another consideration for fuel line routing is the use of braided fuel lines for aesthetic purposes. Edelbrock/Russell offers various kits and adapters for braided fuel lines, providing a range of options for car enthusiasts to enhance the appearance of their engines. Braided steel lines can be purchased in rolls, cut to length, and installed with AN fittings. Alternatively, a more cost-effective approach is to cover the existing hose with braided steel coverings and simulated AN fittings, achieving a similar look without the need for a complete replacement.
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Fuel line kits
There are a few different options for fuel line kits, depending on your specific needs and preferences. One option is to purchase a kit that includes a gas tank with a drain plug, sending unit, filler neck, filler neck hose, filler gasket, filler hose clamps, and tank mounting screws. This type of kit is designed to enhance the performance and reliability of your Mustang's fuel system, and the sending unit allows you to monitor your fuel levels precisely.
Another option for a fuel line kit is to purchase one that includes a fuel filter and reusable filter, allowing you to tuck the fuel line neatly next to the carb. This type of kit typically includes AN fittings and hoses that are compatible with your specific fuel pump.
If you are mainly interested in improving the appearance of your engine, you can buy braided hose and clamps that have AN fitting covers. This is a relatively inexpensive way to dress up your engine without having to replace the entire fuel line. Additionally, you can purchase simulated AN fittings that look like regular worm gear hose clamps with an anodized cover.
It is important to note that determining the exact fittings you need can be difficult without knowing the type of fuel pump you have and how you want to run the line. It is recommended to consult with a professional or a Ford Mustang forum to ensure you purchase the correct fuel line kit for your specific vehicle.
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Frequently asked questions
The 1966 Ford Mustang came with a 5/16" fuel line from the factory, but some owners have upgraded to a 3/8" line for increased performance.
The fuel line runs from the tank to the fuel pump or fuel rail, and then to the carburetor. It does not go through the shock tower but through the lower part of the inner fender.
Braided stainless steel fuel lines are a popular choice for the 1966 Mustang as they add corrosion resistance and improve fuel flow.
The fuel line fittings depend on the type of fuel pump and carburetor used. Edelbrock offers a Single-Feed Fuel Line Kit that includes reusable filters and AN fittings.
