LS Swap EFI Fuel Tank Kit for 1978-1987 Buick Regal/Grand National G-Body
For builders swapping an LS into a 1978-1987 Buick Regal or Grand National, maintaining constant fuel delivery under heavy throttle is a critical challenge that this EFI Fuel Tank addresses with precision fitment and a high output pump. Designed to match the G Body undercarriage exactly and to use factory mount points, it preserves brake and suspension clearances without frame rail modifications. Inside the steel reservoir a 255 LPH pump remains submerged to prevent vapor lock and to sustain steady pressure for engines up to 550 horsepower during spirited driving. Installers benefit from a completely stock routing that bolts in without adapter modifications, speeding up the swap and avoiding clearance issues.
Tailored Steel Tank Contouring to Preserve Underbody Clearance
The fuel tank shell is crafted from robust steel panels precisely shaped to match the G Body floor of 1978 through 1987 Buick Regal and Grand National models. This tailored contouring preserves original brake line routing and suspension geometry so no frame rail modifications are required, maintaining factory clearances for reliable chassis performance. By hugging the underbody profile, the tank stays clear of heat sources and road debris, reducing the risk of vapor lock and potential damage during spirited driving. Installers gain from a direct fit that aligns with factory mounts, cutting install time and retaining the vehicle's structural integrity.
Fully Submerged Pump Module for Stable Pressure Under Hard Throttle
At the heart of the tank sits a 255 liter per hour Walbro fuel pump completely immersed in fuel to prevent air pockets and overheating. Submerged operation ensures the pump remains cooled by the surrounding fluid, extending service life and delivering consistent pressure for LS engines up to 550 horsepower. Under rapid throttle changes the module responds instantly, maintaining steady flow to the injectors and avoiding lean conditions that can harm performance or engine health. This design also minimizes noise and heat buildup compared to external setups, making it ideal for both street driving and track use.
High Grade Construction with Precision Welding for Enduring Reliability
Fabricated from corrosion resistant steel and assembled with precision welds, the tank withstands constant vibration and exposure to ethanol blends without losing shape or integrity. Reinforcement plates at key stress points prevent deformation during hard acceleration and braking, and every seam undergoes strict inspection to meet tight tolerance standards. A premium vent filter keeps contaminants out of the reservoir, while a complete gasket set seals mounting surfaces to guard against leaks over thousands of miles. Together, these features ensure a durable fuel supply system that will perform under demanding conditions.
Comprehensive Component Suite Streamlining LS EFI Installations
This all inclusive kit delivers every part required for a straightforward EFI swap, from the internal pump module and sending unit to tank straps, filler neck, vent filter, gaskets and mounting hardware. Each component aligns with the factory fuel and vent lines, allowing installers to reuse stock plumbing without adapter modifications. The sending unit plugs directly into existing wiring harnesses, and the filler neck drops into the original recess for a clean fit. By bundling all necessary items, the kit reduces parts hunting and accelerates project timelines for faster LS power under the hood.
Count on reliable fueling under demanding driving conditions. To complete your Larger capacity fuel pump Kit at 400 LPH see our 1978-1987 Buick Regal 400 LPH pump Tank Kit.