EFI Fuel Tank Upgrade for Broncos: A Guide for 66-77 Broncos

Looking to improve your classic Bronco’s fuel system? The EFI fuel tank upgrade for Broncos is one of the best ways to enhance reliability, fuel capacity, and convert to EFI compatibility for 1966-1977 models.

Whether you're tired of dealing with old, rust-prone tanks or need a system that supports modern fuel injection, upgrading to a high-quality stainless steel EFI fuel tank can make a massive difference in performance. This guide will walk you through everything you need to know for a seamless upgrade, from understanding the components to product recommendations.

Understanding the EFI fuel tank upgrade for Broncos

Why switch to an EFI stainless steel fuel tank?

Older Bronco models were not originally designed for EFI systems, which require specific fuel delivery pressures and components. Stock fuel tanks for 1966-1977 Broncos often have limited capacity, corrosion issues, and lack compatibility with in-tank EFI pumps. Upgrading your fuel tank to a stainless steel EFI-ready version offers several advantages:

• Corrosion Resistance: Stainless steel tanks resist rust and wear, ensuring longevity.
• Increased Capacity: Many EFI upgrade tanks have 23-gallon capacity to extend range.
• EFI Compatibility: Designed to support modern in-tank pumps and return fuel lines.
• Durability: Superior construction withstands off-road conditions.
• Plug and Play Installation: Many tanks require no drilling or modification.

Key components of an EFI-ready tank

An EFI fuel tank upgrade for early Bronco usually includes a fuel pump module compatible with EFI requirements, internal baffling to reduce fuel sloshing, and properly sized inlet/outlet ports. For example, the 23-gallon stainless steel EFI fuel tank features sealed connections, a brushed finish and the modern 1999-2004 F-150 pump/sender module, making it an ideal solution.

Choosing the right EFI fuel tank for your 1966-1977 Bronco

Material and build quality

Stainless steel fuel tanks are prized for their rust resistance and robustness. When selecting an EFI upgrade for Broncos, prioritize tanks made from at least 14-gauge stainless steel fabricated with precision welds and pressure testing. Avoid tanks with glued or gasketed seams that can degrade over time.

Compatibility and features

Look for tanks that provide:

• EFI pump ready designs with proper fittings for pressure and return lines
• Internal baffling to minimize fuel movement during off-road driving
• Sending units compatible with your fuel gauge system
• Ease of installation, preferrably with no drilling required

The option referenced earlier offers a no-drill, no-glue design and includes a body lift adapter for Broncos with body lifts, making it versatile for different setups.

Preparing for your EFI fuel tank upgrade Bronco installation

Assess your current setup

Before starting the EFI fuel tank upgrade for Broncos, check your existing fuel system for compatibility issues. EFI systems require a continuous high-pressure fuel supply, which the original low-pressure tanks cannot support. Make sure to replace or upgrade associated fuel lines, pumps, and filters accordingly.

Gathering tools and safety equipment

Working with fuel is hazardous. Ensure you have the following on hand:

• Eye protection and gloves
• Proper jack stands and tools for tank removal
• Container to drain old fuel
• Clean workspace with good ventilation

Disconnect the battery and take precautions to avoid sparks during the procedure.

Installation steps for EFI fuel tank upgrade Bronco

Removing the old fuel tank

It is best to drain your fuel tank completely before loosening straps and disconnecting fuel lines and electrical plugs, but its not required. Be mindful of the sending unit wiring you’ll need to transfer to access for your new set-up. Carefully lower the tank and set aside.

Installing the new EFI stainless steel tank

Position the new tank and secure it using the original or supplied straps. Connect the in-tank EFI pump wiring and ensure the fuel lines are correctly attached—with proper return and supply routing critical for EFI function the double-check your fuel lines for leaks.

Post-installation testing and tuning tips

Checking for leaks and fuel pressure

After installation, fill the tank partially and turn the ignition on without starting the engine to prime the fuel pump. Inspect all connections closely for leaks. Use a fuel pressure gauge to verify the system reaches and maintains EFI-specific pressure ranges specified by your EFI system.

Fuel gauge and sender calibration

Confirm your fuel gauge reads accurately with the new sending unit. Some tanks are compatible with programmable digital gauges or standard Ford senders. Adjust or calibrate as necessary to ensure reliable fuel level monitoring.

Maintenance and benefits of EFI stainless steel fuel tanks

Long-term care tips

Stainless steel tanks require minimal maintenance but should be inspected regularly for debris and checked for secure fittings. Internal baffling reduces fuel slosh, but off-road driving may still call for occasional cleaning to prevent sediment buildup.

Performance and reliability benefits

By upgrading to an EFI stainless steel tank, your Bronco benefits from increased fuel capacity, consistent fuel pressure delivery, and reduced risk of rust-related failures. These factors contribute to smoother running EFI performance and more confidence on long drives or off-road adventures.

Where to find a quality EFI fuel tank upgrade Bronco for 1966-1977 Models

Recommended product spotlight

The 23-gallon EFI stainless steel fuel tank designed for 1966-1977 Broncos is a leading choice that combines durability, capacity, and a plug-and-play design. Manufactured with a brushed 14-gauge stainless steel body and sealed fittings, it provides a superior alternative to stock tanks. It comes with a 1999-2004 F-150 fuel pump, which offers reliable flow and operation however if you require a pump with greater flow, the pump is easily replaceable with the pump of your choice.

Additional tips on sourcing and installation support

Seek vendors who provide technical support and clear installation instructions. If uncertain, professional installation can ensure safety and optimal performance. Always verify that your EFI fuel system components are compatible and meet recommended specifications.

Conclusion: EFI fuel tank upgrade for Broncos made simple and effective

Upgrading your 1966-1977 Bronco with an EFI stainless steel fuel tank is a smart investment, enhancing fuel capacity, durability, and the fuel delivery system essential for EFI performance. This guide covered everything from why an upgrade is needed, selecting the right tank, preparation, installation, and maintenance. When choosing a product, consider options like the high-quality stainless steel tank designed specifically for early Broncos that offers a straightforward replacement without the need for drilling or modifications. Ready to take your Bronco’s fuel system to the next level? Explore EFI fuel tank upgrade Bronco options and get started on a lasting and reliable upgrade today.