Replacing Fuel Pump In '68 Chevy C10 263: Step-By-Step Guide

If you're looking to change the fuel pump on your 1968 Chevy C10 263, you've come to the right place. This guide will take you through the process step-by-step, ensuring a smooth and successful replacement. By following these clear instructions, you'll be able to get your Chevy C10 back on the road in no time.

The stock size for the metal fuel line from the tank to the pump is 3/8

The stock size for the metal fuel line from the tank to the pump on a 1968 Chevy C10 263 is 3/8". This measurement is specific to the V8 model. If you have a different engine, the fuel line size may vary. It is always important to verify the correct size before making any repairs or modifications to your vehicle.

When working on the fuel system of a classic car like the 1968 Chevy C10, it is crucial to take the necessary safety precautions. Ensure that you are working in a well-ventilated area and that no ignition sources are present. Before beginning any work, make sure the engine is cool and that there are no sources of ignition nearby.

To access the fuel line, you may need to raise the vehicle and safely support it on jack stands. Be sure to block the wheels and engage the parking brake for added safety. Once you have identified the fuel line, carefully inspect it for any signs of damage, leaks, or deterioration. If the fuel line is in good condition and only requires cleaning, you can use a suitable cleaning solution and a brush to remove any built-up dirt or debris.

If you need to replace the fuel line, it is recommended to use high-quality fuel line tubing that is compatible with your vehicle's fuel type. Cut the new tubing to the appropriate length, taking into account any bends or routing requirements. Use the appropriate tools and fittings to securely connect the new fuel line, ensuring that all connections are tight and secure.

Finally, before starting the engine, check all your connections for leaks. A leak in the fuel line can be dangerous and should be addressed immediately. Consult a qualified mechanic or a repair manual specific to your vehicle for detailed instructions on replacing the fuel line and for any additional safety precautions.

The fuel tank can be moved out of the cab to gain more room

The fuel tank of a 1968 Chevy C10 is located in the cab with the driver, which can be a safety issue as it makes the cabin more susceptible to catching fire in the event of a crash. It also means the driver is more likely to be exposed to gas fumes. Removing the tank frees up space for storage behind the seat.

Relocating the fuel tank to below the bed and behind the rear axle is a more suitable location and provides better weight distribution. This location will also get the smell of gas out of the cab.

To move the fuel tank out of the cab, you will need to:

• Remove the seats, seat belts, and carpet
• Disconnect the soft and hard fuel lines
• Remove the gas tank
• Place the new fuel tank on the ground beneath the second to last divided section of the frame rails and use a jack to raise it into position
• Mark and cut a hole for the filler neck
• Clean up the metal edges of the hole
• Mock up the gas tank straps and mark and drill holes for the gas tank on the driver's side
• Mount the new gas tank on the driver's side
• Drill passenger's side mounting holes
• Mount the tank on the passenger's side
• Insert the sending unit
• Attach the grounding wire to the frame
• Run the new soft line along the frame rail
• Attach the new soft line to the factory fuel hard line
• Connect the new sending unit wire to the engine
• Connect wiring to the new sending unit
• Install the breather hose
• Measure out frame rail cuts
• Cut the bed frame

This process will require some slight frame modifications, but will drastically improve the safety of the truck for daily driving.

An in-tank pump can be used instead of a frame-mounted one

When it comes to changing the fuel pump on your 1968 Chevy C10 263, you have a few options to consider, including the use of an in-tank pump instead of a frame-mounted one. Here are some key points to consider:

An in-tank fuel pump offers several advantages over a frame-mounted pump. Firstly, it can be more efficient by reducing the distance between the pump and the engine, resulting in better fuel delivery and potentially improved performance. Additionally, in-tank pumps are often designed to be submerged in fuel, which helps with cooling and can extend the lifespan of the pump.

When choosing an in-tank pump, you have options like the Tanks Inc. EFI-Ready Fuel Tank Kits, which offer fuel injection readiness and are designed as a direct fit for your 1968 Chevy C10. These tanks are available with different filler neck configurations, such as bed fill or side fill, allowing you to choose the most suitable option for your vehicle's setup.

Another benefit of in-tank pumps is their ability to work with aftermarket fuel senders, ensuring compatibility with your vehicle's fuel gauge. It's important to match the ohm range of the sender to your vehicle's specifications, which for your 1968 Chevy C10 is 0-90 ohms.

When installing an in-tank pump, it's crucial to consider the mounting configuration. Some tanks, like the Tanks Inc. options, are designed to bolt under the truck bed using flanges, allowing for flexibility in mounting locations, including on top or between the frame rails. However, keep in mind that you may need to drill and locate the mounting holes during the installation process.

In-tank pumps are a popular choice for fuel injection setups, and they often include internal baffling to prevent fuel pump starvation. This ensures a consistent fuel supply to the engine, enhancing performance and drivability.

When deciding between an in-tank pump and a frame-mounted pump, consider factors such as ease of installation, fuel delivery efficiency, and compatibility with your vehicle's fuel system and engine configuration. Remember to follow the manufacturer's instructions and specifications for a seamless installation process.

A fuel filter can be added to protect the fuel injectors

A fuel filter is an important component of a vehicle's fuel system. It helps to deliver clean fuel to the engine by screening out foreign particles and liquids from the fuel. These contaminants can include dirt, rust, and paint chips, which can cause rapid wear and failure of fuel injectors, as well as the fuel pump. By adding a fuel filter, you can protect the fuel injectors and ensure that only clean fuel reaches them.

Now, let's discuss the process of changing the fuel pump on a 1968 Chevy C10 263. The first step is to assess the condition of the fuel pump and determine if it needs to be replaced. Common signs of a failing fuel pump include difficulty starting the vehicle, poor performance, and shaky idling. If you notice any of these issues, it's likely time for a replacement.

Once you have determined that the fuel pump needs to be replaced, gather the necessary tools and safety equipment, including eye protection, gloves, and a repair manual specific to your vehicle. Locate the fuel pump, which is usually found in the fuel tank or externally near the motor mount. Before removing the old fuel pump, disconnect the negative battery cable and release the fuel system pressure to prevent any accidental spillage.

When disconnecting the fuel lines, be careful not to damage them, as they may be reused. If the lines are rusted, you may need to cut them with wire cutters and replace them with new tubing. Carefully remove the old fuel pump, taking note of how it is mounted for reference during the installation of the new pump.

Install the new fuel pump by following the instructions provided by the manufacturer. Ensure that the new pump is securely mounted and all connections are tight to prevent leaks. Reattach the fuel lines, being cautious not to overtighten any fittings. Reconnect the negative battery cable and start the engine to check for leaks. If no leaks are detected, your new fuel pump is successfully installed!

Remember to consider adding a fuel filter to your fuel system to protect the fuel injectors and ensure the optimal performance of your classic Chevy C10.

The fuel line from the tank can be run down the frame rail

When running the fuel line down the frame rail, it is important to consider the routing of the line and any potential obstacles. In some cases, it may be necessary to drill holes in the frame to accommodate the fuel line. Additionally, it is important to use the correct size fuel line for your vehicle. For a 1968 Chevrolet C10 with a V8 engine, the fuel line size is typically 3/8".

One option for routing the fuel line is to run it along the passenger-side frame rail. This is the location of the fuel pump and sending unit, so it makes sense to route the line in this direction. Another option is to run the line along the driver-side frame rail and then connect it to the passenger side using a fuel line crossover tube. This option may provide a more direct route for the fuel line.

When running the fuel line, it is important to secure it in place to avoid any potential damage or leaks. This can be done using clamps or brackets. It is also important to ensure that the fuel line is not in contact with any hot components, such as the headers.

In some cases, it may be necessary to modify or fabricate a new fuel line to fit your specific application. This may involve cutting and connecting different types of fuel lines, such as hardline and rubber line, using appropriate fittings. It is always a good idea to double-check your work and ensure that all connections are secure and that there are no leaks in the fuel system.

Frequently asked questions