LS/LT Fuel Tank Kit for 1978-1987 Buick Regal/Grand National G-Body
When dropping an LS or LT powerplant into a Buick Regal or Grand National built from 1978 through 1987, securing steady fuel pressure emerges as a critical step and the 1978 through 1987 Buick Regal EFI Fuel Tank Kit with its 400 LPH pump meets this need by pairing a high-flow pump and an integrated sending unit tuned to match factory gauge output. Installation attaches directly to the factory frame points with all straps, gaskets, filler neck and hardware included to avoid custom fabrication. Accurate level feedback keeps drivers informed on both street and track while preventing lean conditions under high load that could damage internals.
Walbro 400 LPH Pump Performance
The heart of this fuel tank kit is the 400 LPH Walbro fuel pump, engineered to deliver consistent pressure even under peak demands of an LS or LT powerplant producing over 550 horsepower. Its internal strainer traps debris before it can enter the fuel rail, helping to maintain flow rate and prevent starvation during wide open throttle or boost conditions. By sustaining stable delivery throughout extended high rpm operation, the pump guards against lean spikes that can inflict damage on pistons and valves. Its sturdy housing resists corrosion and handles repeated heat cycles, offering dependable operation on both street and track. Combined with electronic fuel injection control, the assembly sharpens throttle response at low engine speeds while preserving efficiency at cruising speeds.
Precision Sending Unit Calibration
This kit's integrated sending unit is calibrated to mirror the original gauge cluster, eliminating the guesswork and erratic readings common with adapters or aftermarket modules. The float arm moves freely inside the tank, translating fuel level to smooth gauge output without phantom fluctuations. Drivers gain reliable feedback that reflects true capacity, reducing the risk of unexpected stops due to low fuel. Calibration matches factory behavior for full-to-empty travel, so drivers accustomed to the stock system can plan trips and track sessions with confidence. Accurate level monitoring also prevents the pump from running dry, enhancing its service life and maintaining consistent flow under all conditions.
Direct Mount Kit Integration
Designed for a bolt-in installation on 1978–1987 Buick Regal and Grand National G-Body frames, this kit eliminates the need for custom brackets or cutting. All necessary straps, gaskets, filler neck, vent filter and mounting hardware are included to streamline assembly and preserve underbody clearance. By anchoring directly to factory points, the design maintains chassis integrity and reduces alignment issues during fitment. Installers save hours otherwise spent on trial and error, allowing more time for wiring, tuning and testing. Whether upgrading a street cruiser or preparing a track car, the comprehensive nature of this tank kit minimizes trips to the parts store and speeds up the swap process.
Trust in MuscleRods precision delivery and to complete your smaller capacity fuel pump Kit at 255 LPH consider our 1978-1987 Buick Regal 255 LPH pump Tank Kit.