LS and LT EFI Fuel Tank Kit for 1978-1987 Buick Regal and Grand National
When installing an LS or LT motor into a 1978 through 1987 Buick Regal or Grand National, many stock tanks cannot supply enough fuel under high load. Built around a 400 LPH Walbro pump and an accurate sending unit, this EFI tank kit maintains stable pressure for applications over 550 horsepower without risking starvation during spirited acceleration or boost. The modular design attaches to original mounting points on G Body chassis and comes complete with straps gaskets filler neck and vent filter to simplify every step of the process. Complete fuel level feedback and consistent flow response help drivers focus on tuning performance rather than troubleshooting supply issues.
Optimized Fuel Delivery with 400 LPH Walbro Pump
The high-flow 400 LPH Walbro pump maintains a steady fuel stream when engines demand over 550 horsepower, eliminating the risk of starvation at full throttle. Its precision design sustains consistent pressure curves in both naturally aspirated and supercharged setups, which is critical for preserving safe air fuel ratios under heavy load. By supplying ample volume at peak demand, the pump protects injectors and internal components while enabling tuners to dial in performance across the entire powerband.
Precision Fuel Level Monitoring for Reliable Operation
The integrated sending unit mounts directly within the tank assembly, offering accurate real time readings of fuel levels throughout the gauge range. This calibration and smooth float movement minimize guesswork and prevent unexpected refueling stops during spirited drives. With consistent feedback, both drivers and engine management systems can trust supply metrics, ensuring uninterrupted performance whether cruising or pushing the engine at high RPM.
Streamlined Installation with Comprehensive Kit Components
This EFI tank kit bolts into the stock mounting points on 1978 through 1987 Buick Regal and Grand National chassis, eliminating the need for custom brackets or welding. Included straps, gaskets, filler neck, vent filter and hardware are precisely matched to the original layout, simplifying every step of the swap. The result is a seamless fit that preserves chassis integrity, reduces fabrication time and lets builders focus on engine and drivetrain instead of sourcing extra parts.
Enhanced Driveability and Efficiency through EFI Conversion
Upgrading to an electronic fuel injection system delivers dynamic control over fuel delivery by adjusting flow based on engine speed, load and temperature. Drivers benefit from smoother throttle response and better mileage as EFI avoids rich or lean spikes common in mechanical systems. This precise metering also improves cold start performance and maintains steady operation in varying conditions, resulting in a more predictable and engaging driving experience.
Every component is crafted for dependable service. For a smaller capacity fuel pump Kit at 255 LPH see our 1978-1987 Buick Regal 255 LPH pump Tank Kit.