Katerina Swanson
The Chevrolet Nova is a classic car with a range of fuel system options. The fuel line size for a 1966 Nova is a common query, with a variety of recommendations. Some sources suggest a 3/8 fuel line, which was the size used in the original 1966-1967 Nova models. Others recommend a 5/16 line, which is adequate for a 300-horsepower motor. Some Nova owners have also considered upgrading to a 1/2 line for more power. It is important to note that the fuel line size may depend on the specific engine and horsepower of your Nova, so it is always best to consult with a professional or refer to the original manufacturer's specifications.
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What You'll Learn
- The 1966 Nova's fuel tank and frame use a 5/16-inch fuel line
- The 1966 Chevy II Nova has a 3/8-inch NPT externally-mounted electric fuel pump
- The 1966 Nova's fuel pump to carburetor line is available in stainless steel
- The 1966 Nova's fuel line can be upgraded to 3/8-inch ID hose
- The 1966 Nova's fuel line can be marked for authenticity
The 1966 Nova's fuel tank and frame use a 5/16-inch fuel line
The 1966 Chevrolet Chevy II Nova has a variety of fuel system parts available, including electric and mechanical fuel pumps. The fuel tank and frame of the 1966 Nova use a 5/16-inch fuel line, which is the standard size for the main fuel line. This size was also used for the fuel line from the tank and down the frame of the 1973 Nova Custom with a 307 V8 2 Barrel carb.
A 5/16-inch line is capable of feeding a 300-horsepower motor, and possibly even a 400-horsepower motor with an electric fuel pump and increased pressure. However, some owners of the 1973 Nova with more powerful engines have expressed concerns about the 5/16-inch line being insufficient, and have considered upgrading to a 3/8-inch or even a 1/2-inch line.
The 1966 Nova's externally mounted electric fuel pump features 3/8" NPT, and the high-performance two-valve mechanical fuel pump has 1/4" NPT. The 1966-1967 Nova also has a fuel tank kit with a 3/8" sending unit.
Classic Industries offers a range of OE fuel lines for the Chevrolet Nova, including the fuel hose stamp, original material front-to-rear fuel line, OE material fuel return line, original material fuel pump to carburetor line, zinc-coated metal fuel line spiral armour, OE material fuel vent line, and original material front-to-rear vapour line. These lines are correct reproductions of the original fuel lines and are guaranteed to fit perfectly.
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The 1966 Chevy II Nova has a 3/8-inch NPT externally-mounted electric fuel pump
The 3/8-inch size is a standard measurement for the fuel lines in the 1966 Chevy II Nova, ensuring consistent fuel delivery to the engine. This size is also found in the fuel tank kit for the same model years, indicating its importance for proper fuel system function.
While the externally-mounted electric fuel pump is a popular choice, there are other options available as well. Classic Industries offers a range of fuel pumps, including electric and mechanical varieties, to suit the needs of different applications. These pumps may differ cosmetically from the original but will fit and function correctly, providing a suitable replacement.
Upgrading the fuel lines can also be beneficial for improving the fuel system's performance while retaining its originality. Correct reproduction fuel lines are available, extending from the fuel pump to the fuel tank and ensuring a perfect fit. Additionally, a stainless steel upgrade for the original fuel line from the fuel pump to the carburetor can add a custom look while providing long-lasting performance without the hassle of bending lines.
When considering fuel line sizes, it's important to note that the horsepower requirements play a significant role. A 5/16-inch line, for instance, can adequately feed a 300-horsepower motor, but for higher power outputs, an upgrade to a bigger line, such as a 3/8-inch or even a 1/2-inch line, may be necessary to meet the engine's fuel demands.
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The 1966 Nova's fuel pump to carburetor line is available in stainless steel
The 1966 Chevrolet Nova is an iconic car, and if you're lucky enough to own one, you may be considering upgrading the fuel pump-to-carburetor line. This component is available in stainless steel, offering a long-lasting and rust-free solution.
The fuel pump-to-carburetor line is an essential part of the fuel delivery system, connecting the fuel pump to the carburetor and ensuring a steady flow of fuel to the engine. Over time, these lines can become clogged, corroded, or damaged, affecting the performance and efficiency of your classic Nova.
Upgrading to a stainless steel fuel pump-to-carburetor line is a great option for several reasons. Firstly, stainless steel is highly resistant to corrosion and rust, ensuring that your Nova's fuel system remains reliable for years to come. It's a durable and long-lasting material that can withstand the high pressures and temperatures of the engine bay.
Additionally, stainless steel fuel lines can enhance the appearance of your engine bay. The sleek and modern look of stainless steel can add a custom touch to your classic car, making it stand out at car shows and cruises. These lines are designed to be correct reproductions of the original, ensuring a perfect fit and easy installation, so you can spend less time wrenching and more time driving.
When considering an upgrade to your 1966 Nova's fuel system, it's important to keep in mind that different engines had varying factory specifications. For example, some Nova models with higher horsepower used larger 3/8-inch fuel lines, while others used 5/16-inch lines. It's always best to consult a professional or a factory service manual to ensure you're using the correct parts for your specific engine.
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The 1966 Nova's fuel line can be upgraded to 3/8-inch ID hose
The 1966 Chevrolet Nova is a classic car, and like any classic car, it has its quirks and challenges when it comes to maintenance and upgrades. Upgrading the fuel line is one such task that Nova owners may want to take on, and it's important to get it right to ensure optimal performance and safety.
The original fuel line in the 1966 Nova was designed to meet the specifications of the time, but today's standards and expectations are different. Modern engines demand more fuel, and the fuel lines need to be able to keep up with this demand. Upgrading to a larger fuel line can help improve performance and ensure a consistent fuel supply to the engine.
The stock fuel feed line in the 1966 Nova is typically 5/16" ID, which some owners may find insufficient, especially if they are aiming for higher horsepower. Upgrading to a 3/8" ID hose can be a great option to consider. This size upgrade will allow for a greater flow of fuel, ensuring that the engine receives the necessary amount, even at higher outputs.
The process of upgrading to a 3/8" ID fuel line is not incredibly complex, but it does require careful planning and execution. It's important to source the correct parts, including the fuel line itself, as well as fittings, hoses, and clamps. The fuel tank sending unit may also need to be replaced to accommodate the larger tube size. Additionally, marking the fuel lines for identification, as was done on GM assembly lines, can be a helpful step to verify correct installation.
Upgrading the 1966 Nova's fuel line to a 3/8" ID hose can be a worthwhile modification. It will not only improve performance but also give owners peace of mind, knowing their classic car is running smoothly and efficiently with a consistent fuel supply.
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The 1966 Nova's fuel line can be marked for authenticity
The 1966 Chevrolet Nova is a classic car, and for those restoring one, it is important to get the details right. One way to add an authentic touch to your 1966 Nova restoration is to mark your fuel lines. This stamp was used by hose supplier SWAN on all rubber fuel hoses that connected the main fuel line to the fuel sending unit and fuel pump. On GM assembly lines, hoses were marked to verify correct installation. This stamp was used to identify hose size and placement. 5/16" hose was used for the main fuel line, and 1/4" was used as a fuel return hose.
The 1966 Nova's fuel line size will depend on the engine and carburetor setup. Some Novas came with factory 3/8" ID fuel lines, while others used 5/16" lines. The smaller 5/16" line is adequate for an under 300-horsepower motor. If you are using a Holley carburetor, the fuel pump-to-carb line from a Corvette or Camaro with a similar engine should fit fine.
If you are looking to increase the horsepower of your 1966 Nova, you may need to upgrade to a larger fuel line. A 5/16" line may be sufficient for up to 400 horsepower with an electric fuel pump, but for more power, a 3/8" or even a 1/2" line may be necessary. It is important to consider the bend radius of the lines when upgrading, as sharp bends can restrict flow.
Classic Industries offers a wide selection of OE Fuel Lines for the Chevrolet Nova, including correct reproductions of the original fuel lines that will connect as the original. These reproduction lines can improve your fuel system while retaining the originality of your classic car.
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Frequently asked questions
The 1966 Chevy Nova uses a 3/8" fuel line.
You can use a 5/16" fuel line, but this may not be sufficient for engines over 400HP. If you are looking for more power, you may want to consider upgrading to a 1/2" fuel line.
If you are using a Holley carburetor, you can use a fuel pump to carb line from a Corvette or Camaro. When you get above 500 horsepower, you may need to upgrade to a 1/2" hard line with AN-8 fittings and hose.
If you are building a high-performance engine, you may need to upgrade to a larger fuel line to prevent running out of fuel. A 1/2" fuel line should be adequate for most applications.
