Katerina Swanson
There are a variety of ways to make an 887 El Camino fuel injection tank. One way is to use a fuel sender for EFI or modify the existing one, as the pump is in the tank for EFI. If your car has a computer, it is recommended to find a donor vehicle with a compatible computer, engine, and wiring harness. Another option is to purchase an LT-1 engine from a '93 Firebird, which includes the entire wiring setup and internal fuel tank sending unit. A third option is to use a ''94-'96 Buick Roadmaster wagon gas tank, which is a bolt-in replacement and includes a high-pressure fuel pump. Additionally, some El Camino owners have reported success with the Sniper EFI system, which offers improved timing control and mileage.
| Characteristics | Values |
|---|---|
| Fuel Tank Capacity | 22 gallons |
| Size | 38 1/2' x 25' x 10 3/4' |
| Fuel Injection System | Sniper System |
| Mileage | Boost from 15mpg to 18mpg |
| EFI Tank | 1971-72 Chevy El Camino EFI Fuel Tank with Notched Corners |
| Modifications | Cutting and modifying filler tube, adding rubber adapter tube |
| Fuel Pump | GM in-tank fuel pump, Holley fuel pump, AC Delco EP381 |
| Fuel Filter | 100-micron and 10-micron filter |
| EFI Conversion | Fuel sender or modification, donor vehicle with computer, engine, and wiring harness |
| EFI Tank Options | Tanks Inc., Buick Roadmaster Wagon, Caprice Wagon |
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What You'll Learn
EFI conversion: 78-87 El Caminos can be converted with bolt-on applications
The 1978-1987 El Caminos can be converted to EFI with bolt-on applications. The Powerjection system can be bolted in place of the standard 4150-style carburettor, allowing the vintage look of a carburettor with the modern conveniences of fuel injection. The system's fuel inlet kit, linkages, and air cleaner size and location are identical to the original.
For the 1985-1987 El Caminos, the 4.3 Fuel Injection tank with the 4.3 fuel injection sending unit that holds the in-tank fuel pump is a suitable EFI conversion. The pump on the 4.3 sender is lower pressure for TBI, but a higher pressure TPI pump (like Camaro) is a direct replacement. You can also use the Holley HydraMat in the carburetted gas tank.
For the fuel lines, you can use #8 fuel lines for both the supply and return lines, with double flare fittings and fuel injection line clamps. It is important to replace all the rubber hoses with steel braided hoses at once to avoid future issues. The Camaro sending unit can be used, but some report that the fuel gauge will be slightly off due to the different tank shape.
For the 1987 El Camino, the fuel injection sender part number is #25092938, while the 1985/1986 El Caminos use #25004940 according to GM parts direct. It is important to note that the 1987 sender has a rectangular float, while the 1985/1986 sender has a round float.
Some El Camino owners have shared their experiences with EFI conversions. One owner with a Sniper system on their El Camino reported that they followed Holley's directions meticulously and spoke to their tech line during installation. They dropped the fuel tank, added a 3/8 return line, and modified a GM in-tank fuel pump for the 3.8 V6 EFI with a Holley fuel pump. Another owner with a Sniper system on their 454 El Camino reported flawless performance and a boost in economy from 15mpg to 18mpg.
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Fuel sender: Either get one for EFI or modify the existing one
When it comes to the fuel sender for your 887 El Camino fuel injection setup, you have two main options: purchasing a new one designed for EFI or modifying your existing carbureted fuel sender. Let's explore both options in detail.
Option 1: Purchasing a New EFI Fuel Sender
If you decide to purchase a new fuel sender specifically designed for EFI, you'll need to ensure compatibility with your El Camino's fuel tank. EFI fuel senders typically require a fuel tank with two holes: one for the fuel pump and the other for the sender itself. You can find EFI fuel sender units available from various manufacturers, including Holley, who offer a range of EFI fuel pumps and sending units. When purchasing a new EFI fuel sender, pay attention to the tank size and ensure it matches your El Camino's fuel tank capacity, which could be either 17 or 22 gallons.
Option 2: Modifying Your Existing Fuel Sender
If you prefer to modify your existing carbureted fuel sender for EFI, there are a few considerations. Firstly, you'll need to ensure that your fuel pump can handle the higher pressure required for EFI, typically between 58 to 65 psi. You may need to install a regulator to manage this higher pressure. Additionally, it's important to replace any existing rubber lines with new lines rated for EFI's higher pressure. Keep in mind that modifying your existing fuel sender may require careful adjustments to ensure it functions correctly with EFI.
When deciding between purchasing a new EFI fuel sender or modifying your existing one, consider factors such as cost, convenience, and your level of mechanical expertise. While purchasing a new EFI fuel sender may be more straightforward, modifying your existing setup can be a cost-effective option if done correctly. However, it's important to note that there may be challenges in adapting older vehicles like the El Camino to modern EFI systems, and you may require guidance from experienced mechanics or forums dedicated to El Camino enthusiasts.
In conclusion, whether you choose to purchase a new EFI fuel sender or modify your existing one, careful consideration and planning are essential to ensure a successful fuel injection setup for your 887 El Camino. Remember to take into account the specific requirements of your vehicle and your own technical capabilities when making this decision.
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Fuel pump: Ensure it's a high-pressure pump
To make an 887 El Camino tank fuel injection, one of the key components you'll need to consider is a high-pressure fuel pump. Ensuring you have a reliable and suitable fuel pump is essential for the overall performance and efficiency of your vehicle.
When it comes to fuel pumps, there are a variety of options available in the market, and it's important to choose one that is compatible with your El Camino and its fuel injection system. A high-pressure fuel pump is designed to deliver a higher volume of fuel at a greater pressure than a standard fuel pump, which is necessary for efficient fuel injection.
There are several reputable brands that manufacture high-pressure fuel pumps, such as Xtreme-DI, which offers a range of options with different specifications. When selecting a fuel pump, it's important to consider factors such as flow rate, pressure, and compatibility with your vehicle's fuel system. It's always recommended to consult a professional or a mechanic who has experience with older vehicles to ensure you make the right choice.
Additionally, you may also need to consider the fuel lines and injectors that work in conjunction with the fuel pump. In some cases, you might need to slightly bend the factory high-pressure line or opt for a pre-bent line to ensure a proper fit. It's crucial to follow the manufacturer's instructions and guidelines when installing a high-pressure fuel pump to avoid any issues.
Overall, investing in a high-pressure fuel pump can provide significant benefits in terms of performance and fuel efficiency. By choosing a suitable pump and ensuring proper installation, you can maximize the potential of your El Camino's fuel injection system.
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Tank size: Check the option sticker in the glove box
To determine the tank size of your El Camino, you should check the option sticker located in the glove box. This sticker will indicate whether your vehicle is equipped with a 17- or 22-gallon fuel tank. Specifically, look for the code "N23" on the sticker, which signifies that your El Camino has a 22-gallon tank.
The 1986 El Camino shop manual mentions that the standard fuel tank capacity for this model year is 18.1 gallons, while the optional upgrade is a 22-gallon tank. The physical dimensions of a 22-gallon tank are approximately 38.5 inches by 24 inches by 10 inches (length x width x height). However, when measuring from underneath the vehicle, the height may appear to be closer to 7 inches due to the tank's position and the challenge of obtaining an accurate measurement while it is installed.
It is worth noting that there may not be significant visual differences between the 17- and 22-gallon fuel tanks for the El Camino. If maintaining the originality of your vehicle is a priority, especially for older models like the 1982 El Camino, you may opt for the 17-gallon tank. However, if you prioritize fuel capacity or plan to undertake long-distance trips, the 22-gallon tank could be a more suitable choice.
When considering the tank size, it is important to take into account your specific needs and usage patterns. For example, if you frequently travel long distances or have limited access to fuel refilling stations, a larger tank may provide peace of mind and reduce the frequency of refuelling stops. On the other hand, if your typical journeys are shorter and you value the authenticity of your El Camino, opting for the original tank size could be more aligned with your priorities.
By referring to the option sticker in the glove box, you can confidently determine the fuel tank capacity of your El Camino. This knowledge will assist you in making informed decisions regarding fuel management, maintenance, and any future modifications or upgrades you may consider for your vehicle.
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Sniper system: This can boost economy and improve timing
The Holley Sniper EFI system is a popular choice for those looking to boost fuel economy and improve timing in their vehicles, including the El Camino. The system's precise fuel management capabilities and self-tuning features make it a standout option.
Precise Fuel Management
The Sniper EFI system excels at precise fuel management. It uses electronic controls to regulate fuel delivery, resulting in more accurate fuel-air ratios. This improves combustion efficiency and engine performance. Unlike carburetors, which rely on mechanical and vacuum-operated mechanisms, the Sniper EFI's electronic controls ensure optimal fuel delivery, enhancing combustion and overall engine performance.
Self-Tuning Capabilities
The Sniper EFI is equipped with advanced sensors that monitor critical engine parameters such as air-fuel ratio, engine temperature, and throttle position. Based on this data, the system automatically adjusts fuel delivery to optimize performance and fuel economy. This self-tuning function reduces the need for manual adjustments, ensuring a smooth-running engine under various conditions.
Improved Fuel Efficiency
By optimizing the air-fuel mixture and ensuring precise fuel delivery, the Sniper EFI eliminates excess fuel delivery associated with carburetors. This reduction in wasted fuel leads to improved fuel efficiency and lower fuel costs over time. Additionally, the increased fuel efficiency benefits the environment by reducing fuel consumption.
Customizable Performance
The Sniper EFI offers a range of customizable options for performance tuning. Users can adjust parameters such as fuel maps, ignition timing, and idle speed through a user-friendly interface. This flexibility allows car enthusiasts to fine-tune their engine's performance to match their specific needs and preferences. Whether you seek a more aggressive performance or a smoother ride, the Sniper EFI can be tailored accordingly.
Diagnostic Capabilities
The Sniper EFI system includes diagnostic features that help users monitor and troubleshoot engine issues. It provides real-time data on various engine parameters and can alert users to potential problems. This diagnostic capability simplifies engine maintenance and enables proactive issue resolution.
The Holley Sniper EFI system, with its precise fuel management, self-tuning capabilities, improved fuel efficiency, customizable performance, and diagnostic features, offers a compelling solution for El Camino owners seeking enhanced fuel economy and improved timing.
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Frequently asked questions
The Sniper system is a popular choice for El Camino owners, with some reporting decades of flawless performance and improved mileage.
The installation process can vary depending on the specific El Camino model and the EFI system chosen. However, it generally involves dropping the fuel tank, adding a return line, and modifying the fuel pump. It is recommended to consult a professional or seek advice from online forums dedicated to El Camino owners.
Yes, one common issue is the lack of aftermarket fuel injection fuel tanks specifically designed for 5th Gen El Caminos. A possible solution is to adapt used Chev Caprice Wagon or Buick Roadmaster Wagon tanks, which may require some modifications to fit properly.
Converting to EFI can offer several benefits, including improved timing adjustment, increased fuel economy, and better performance. Additionally, EFI systems can provide more accurate fuel level readings when the tank is full.
