EFI Fuel Tank Kit for LS and LT Swaps 1978-1987 Buick Regal/Grand National
When you swap an LS or LT motor into a G Body Buick Regal or Grand National from 1978 through 1987 the stock fuel tank often cannot keep pace with modern engine demands. Equipped with a 400 LPH Walbro pump and a precision sending unit this EFI fuel tank kit holds steady pressure for setups exceeding 550 hp without risking fuel starvation. Installation uses original mounting points and includes all straps and hardware needed to simplify the process and reduce downtime.
Robust 400 LPH Fuel Pump for LS and LT Engines
The 400 LPH Walbro pump delivers a continuous stream of fuel necessary for setups pushing beyond 550 horsepower, eliminating the risk of fuel starvation during wide-open-throttle or boosted operation. Its design ensures a stable pressure curve even under heavy load, which is critical for maintaining safe air-fuel ratios and protecting internal engine components. By supplying consistent volume at high demand, the pump supports both naturally aspirated and forced induction configurations with equal reliability. This level of performance makes it ideal for serious street builds and track applications alike.
Accurate Fuel Level Feedback from the Sending Unit
The precision sending unit provides real-time tank level information, ensuring that gauge readings reflect actual fuel volume rather than estimates. This accuracy helps drivers plan refueling stops more effectively and reduces the risk of running out of fuel during spirited sessions. Integrated directly into the tank module, the sender is calibrated to maintain reliable readings throughout the full range of motion. As a result, you gain confidence in your fuel monitoring whether cruising on the highway or pushing your engine on backroads.
Simplified G Body Installation with Complete Hardware
This kit is engineered to bolt in using the original mounting points on 1978-1987 Buick Regal and Grand National chassis, eliminating the need for custom brackets or welding. Included components such as straps, gaskets, filler neck, vent filter, and all required hardware come pre-matched to the stock layout, reducing fabrication time and potential fitment errors. By streamlining the installation process, technicians and enthusiasts can focus on the swap itself instead of sourcing additional parts. The result is a clean, factory-style installation that preserves chassis integrity and cut down build hours.
Enhanced Driveability and Economy through EFI Conversion
Converting to electronic fuel injection brings a level of precision unachievable with carburetors, adjusting fuel delivery on the fly based on engine load, RPM and temperature. Drivers experience smoother throttle transitions and more immediate response thanks to the injectors' rapid modulation of fuel flow. This precise metering also improves fuel economy by avoiding the rich or lean spikes common in mechanical systems. Whether in stop-and-go traffic or open road cruising, EFI ensures consistent performance and efficiency under all conditions.
Trust MuscleRods for precise fuel delivery solutions. For a smaller capacity fuel pump Kit at 255 LPH see our 1978-1987 Buick Regal 255 LPH pump Tank Kit.