1971-1972 A-Body GTO/Lemans EFI Fuel Tank Kit for LS and LT Engine Swaps
Swapping an LS or LT powerplant into a 1971-1972 Pontiac GTO or Lemans demands a fuel system built for precision and reliability under peak loads, and this EFI Fuel Tank Kit delivers that. Crafted from corrosion resistant steel to match undercarriage contours of the frame and bolt onto factory hangers, the tank includes a 400 LPH pump and regulator that maintain rail pressure, prevent vapor lock while preventing cavitation during aggressive acceleration. Technicians will appreciate the inclusion of every required strap, gasket and mounting bolt for a direct fit that preserves factory wiring and fuel line routing, reducing install time and avoiding custom modifications.
Immersed Pump Technology for Stable Fuel Pressure
The core of this EFI tank kit is a 400 LPH Walbro pump that operates fully submerged in fuel, using immersion cooling to combat heat soak and guard against vapor lock during sustained wide-open throttle runs. By keeping the pump rotor assembly bathed in fuel, temperature spikes are minimized and internal components remain within optimal operating ranges under high demand. Precise rotor tolerances and a stainless steel inlet strainer further reduce the risk of cavitation when cornering or accelerating aggressively, ensuring a steady supply of fuel to the rail. The outcome is uniform pressure delivery that preserves ideal air-fuel ratios, sharp throttle response and reliable combustion across the entire RPM band.
Precision Engineered Steel Shell for Chassis Integration
This fuel tank shell is formed from corrosion resistant steel and CNC shaped to mirror the underbody geometry of 1971-1972 A-Body GTO and Lemans frames with millimeter accuracy. Factory hanger brackets, vent ports and flange openings line up precisely with original mounting points, allowing technicians to install the unit without trimming, welding or shimming. Maintaining the factory undercarriage profile preserves crumple-zone design and frame integrity while providing adequate clearance for control arms, brake lines and exhaust components. As a result, modern electronic fuel injection capability is seamlessly integrated into the classic chassis, retaining OEM fuel line routing and wiring paths with no adaptations required.
Complete Fuel Module Kit Simplifying Installation
This all-inclusive kit delivers every component needed for an LS or LT engine swap in a 1971-1972 Pontiac GTO or Lemans, eliminating the need to source parts separately. Beyond the in-tank pump module and calibrated sending unit, the package includes heavy-gauge tank straps, matched filler neck, inline vent filter, molded gaskets and a full set of mounting hardware. All seals and O-rings are rated for ethanol blended fuels to prevent leaks and extend service life. By providing precisely matched parts that align with the tank's contours, technicians benefit from reduced labor hours, fewer fitment challenges and a straightforward path to restoring original fuel line and gauge harness connections.
Trust MuscleRods for precise fit and lasting reliability. For a smaller capacity fuel pump Kit at 255 LPH see our 1971-1972 GTO / Lemans EFI Fuel Tank Kit - 255 LPH Pump.