Rajan Wilcox
The fuel line size of a car is an important consideration when it comes to maintenance and repairs. The El Camino is a Chevrolet car model produced between 1970 and 1972. Various forum posts indicate that the fuel line size for this model is 3/8, with some suggesting a smaller return line of 5/16 or 1/4. However, it's important to note that fuel line sizes can vary depending on the specific year and model of the El Camino, and seeking manufacturer information or expert advice is recommended before making any modifications or repairs.
| Characteristics | Values |
|---|---|
| Fuel line size from tank to fuel pump | 3/8" |
| Fuel line size from the hard line on the frame to the fuel pump | Rubber or flexible braided line |
| Fuel line size from the tank to the pump | 3/8" or 5/16" |
| Fuel line size from the pump to the carburetor | 3/8" |
| Fuel line size for 1970 El Camino SS | 3/8" |
| Fuel line size for 1971-1972 El Camino | 2" ID rubber hose |
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What You'll Learn
The fuel line from the tank to the pump should be 3/8
The fuel line from the tank to the pump on an El Camino should be 3/8". This measurement is standard for vehicles with stock engines. The fuel line can be made from a variety of materials, including rubber, braided line, aluminium line, or nylon line.
When installing a new fuel line, it is important to consider the type of engine and whether the vehicle has a fuel injection system. For example, a Chevy LS engine requires a return fuel line. It is also important to ensure that the fuel line is compatible with the fuel type, as some materials, such as galvanized steel, can react with the alcohol found in certain types of fuel.
There are several options for the fuel line material on an El Camino. One option is to use a 3/8" brake line, which is commonly available and can be made from a variety of materials such as aluminium or nickel copper. Another option is to use an aluminium line, which is lightweight and flexible but may be prone to cracking over time due to work hardening. A third option is to use a braided line, which is more expensive but offers increased durability.
It is important to note that the fuel line from the tank to the pump may not be the same size as the return fuel line. The return fuel line is typically smaller than the main fuel line and may be connected to the fuel pump or used for vapour return. When replacing the fuel lines on an El Camino, it is recommended to verify the size of the original lines using a wrench and to inspect the rest of the fuel system to determine the correct length and type of fuel line needed.
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The 1970 El Camino has a single fuel line from the tank to the fuel pump
When replacing the fuel line, it is important to get a high-quality line to avoid kinking during installation. The lines can be purchased by the foot, and a tape measure can be used to determine the correct length. It is also important to ensure that the line is not kinked or cracked, as this can cause issues with fuel flow.
Some El Camino models have a fuel pump with two lines: a fuel line and a return line. However, the 1970 El Camino did not have a fuel return line, and instead used a vent line. This can be confirmed by checking for a splitter valve above the tank. If there is no splitter valve, then the return line can be eliminated, and the hose can be routed back to the tank.
The fuel system in the 1970 El Camino is a closed engine vapor system, which means that all engine fumes, including those from the crankcase and valve covers, are entered into the engine and burned off through the tailpipe. This system helps to reduce emissions and improve fuel efficiency.
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The 1971 El Camino has a 2 ID rubber hose
The 1971 El Camino has a 2" ID rubber hose. This refers to the size of the fuel line hose that connects the fuel tank to the fuel pump. The fuel line hose is a crucial component of the El Camino's fuel system, ensuring the efficient delivery of fuel from the tank to the engine.
The 2" ID rubber hose is part of the El Camino's fuel injection system, which is designed to supply fuel directly to the engine's cylinders. This system provides improved performance and fuel efficiency compared to traditional carbureted systems. The fuel injection system in the 1971 El Camino utilizes a 2-piece neck design, which simplifies the connection process by utilizing the supplied 2" ID rubber hose.
It's important to note that the 2" ID rubber hose is specifically designed for use with GPA 2 and 4 series fuel pumps. Using this hose with TBI or High Flow fuel pumps is not recommended. Additionally, the El Camino's fuel system accommodates aftermarket 5-bolt senders, offering multiple Ohm ranges that can work seamlessly with factory or aftermarket gauges.
When it comes to maintaining or upgrading the fuel system of a 1971 El Camino, it's crucial to source compatible parts and follow proper installation procedures. The fuel line hose, for instance, plays a critical role in ensuring a consistent and controlled flow of fuel, contributing to the vehicle's overall performance and reliability.
In conclusion, the 1971 El Camino's 2" ID rubber hose is an integral component of its fuel injection system, facilitating the efficient delivery of fuel from the tank to the engine. Proper maintenance and compatibility considerations are essential to ensure the optimal performance and longevity of this classic vehicle.
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The 1970 El Camino SS has a 3/8 line and a 1/4 return line
The fuel line size in a car is important as it determines how much fuel can be delivered to the engine. The 1970 El Camino SS has a 3/8-inch line and a 1/4-inch return line. This is a common size for fuel lines, with many vehicles of a similar age and engine size featuring the same size.
The 3/8-inch line is the main fuel line, running from the fuel tank to the engine, and the smaller 1/4-inch line is the return line, which runs alongside the main line. This setup is standard for the 1970 El Camino SS model, and it is designed to work with the engine's fuel injection system.
It is worth noting that some El Camino owners have reported having different-sized fuel lines in their vehicles. For example, one owner of a 1970 El Camino reported having a 5/16-inch fuel line, while another 1970 El Camino SS owner stated their vehicle had a 3/8-inch line with a smaller return line that they believed was originally connected to the fuel pump.
When replacing or upgrading fuel lines, it is important to use the correct size. The size of the fuel line can impact the flow of fuel and, therefore, the performance of the engine. It is also essential to consider the material of the fuel line. While some people use 3/8-inch brake line, others opt for aluminium, braided line, nylon, or rubber. Each material has its advantages and disadvantages in terms of cost, durability, and compatibility with certain fuels.
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The original fuel supply line can be replaced
Firstly, you will need to determine the size of the fuel line. The fuel lines on an El Camino are typically 5/16" and 3/8" in diameter. You can purchase fuel lines in these sizes from auto part stores or online. It is recommended to buy a little extra length to allow for changes to the lines at the engine for vent and supply lines.
Next, you will need to drain the fuel tank. While it is not necessary to completely empty the tank, you should remove as much fuel as possible to avoid spillage when removing the old fuel lines. Old tanks can be siphoned using a 6-foot hose and some 5-gallon containers.
Once the tank is drained, you can begin removing the old fuel lines. Take care when removing the lines to avoid damaging any other components. It is also important to note that the fuel lines may have surface rust, so be careful when handling them.
When the old lines have been removed, you can install the new fuel lines. Be careful not to kink the new lines during installation. You may also want to replace the spring clips with fuel injection fuel clamps for added safety.
Finally, you can refill the fuel tank and test the vehicle to ensure the new fuel lines are functioning properly.
It is important to note that working on a fuel system can be dangerous, and it is always recommended to consult a professional mechanic if you are unsure about any part of the process.
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Frequently asked questions
The fuel line on a 1970 El Camino is 3/8" with a smaller "return line" running alongside it.
3/8" is a pretty universal size for that run.
The line from the pump to the carburetor is 3/8".
Nickel-copper is a good option for the fuel line as it is easy to bend and form, resistant to cracking, and not subject to fuel reactions.
The fuel line on a 1987 El Camino appears to be a mix of 3/8” and 5/16”.
