1971-1972 Pontiac GTO/Lemans EFI Fuel Tank Kit for LS and LT Engines
When adapting an LS or LT powertrain into a 1971 to 1972 Pontiac GTO or Lemans A Body chassis this EFI fuel tank assembly takes the guesswork out of fuel delivery. Designed to replace the factory tank without cutting or welding the kit secures onto original hangers and flange locations to preserve chassis integrity. Embedded within the housing a 400 LPH pump and internal pressure regulator maintain stable rail pressure for setups exceeding 550 horsepower under hard acceleration. Installers benefit from the complete hardware package including sending unit, straps, gaskets, and vent filter for a straightforward swap that minimizes downtime.
Precision CNC Mounting for 1971 and 1972 A Body Fuel System
The fuel tank shell is CNC machined to align exactly with the original mounting hangers and flange locations found on 1971 and 1972 A Body chassis, preserving the structural integrity of the underbody. By matching the factory contours down to fraction of a millimeter tolerances, installers avoid complex trimming or welding steps and maintain the vehicle's original fitment geometry. This approach not only reduces installation time but also ensures that the tank seats squarely when reusing stock hardware. The result is a drop-in replacement that feels like an OEM unit yet is engineered to support modern EFI requirements. Maintaining exact chassis clearances also safeguards against chafing or interference with suspension and brake lines during spirited driving.
400 LPH Walbro Pump Engineered for High Volume Fuel Delivery
At the heart of this kit is a 400 LPH Walbro pump that meets the demands of powerplants pushing beyond 550 horsepower. Designed with precise rotor and strainer tolerances, it delivers a consistent fuel flow rate under rapid throttle transitions, preventing transient lean conditions that can harm engine health. Its internal design minimizes turbulence and cavitation, ensuring a stable supply even under cornering loads or track use. The higher capacity pump also reduces fuel temperature rise by moving larger volumes at lower input pressure, improving longevity. With this level of performance built in, owners can confidently extract maximum output without fuel delivery becoming the limiting factor.
Internal Module and Regulator Securing Steady Pressure Control
Integrating the pump inside the fuel tank provides continuous cooling by the surrounding fuel, a critical advantage that helps prevent vapor lock in hot engine bays. The module houses both the pump and an adjustable pressure regulator that maintains accurate rail pressure across all operating conditions. This stability is vital for modern injection systems, where even slight pressure swings can impact fuel metering and throttle response. Fine-tuning the regulator allows calibration to specific injector flow rates and boost levels, delivering a crisp throttle feel from idle through redline. By centralizing these components, the design also shortens suction lines, reducing the chance of cavitation during high-G maneuvers.
All Inclusive Assembly for Streamlined Swap Integration
Every component required for the conversion is included in the kit, eliminating the need to source parts separately and avoiding potential compatibility errors. The package features the fuel pump module, sending unit calibrated for the stock gauge, tank straps, filler neck, vent filter, gaskets, and all mounting hardware. Each item is pre-matched to the tank's geometry, so installers simply transfer a handful of original lines, secure the assembly to the chassis, and connect the wiring. This plug-and-play workflow significantly trims downtime and labor costs on the lift. Whether performing a weekend swap or professional installation, technicians benefit from a cohesive assembly that streamlines the process from start to finish.
Count on reliable operation across all driving conditions; for a Smaller capacity fuel pump Kit at 255 LPH see our 1971-1972 GTO / Lemans EFI Fuel Tank Kit - 255 LPH Pump.