1971-1972 Pontiac GTO/Lemans EFI Fuel Tank Kit for LS and LT with 400 LPH Pump
Swapping an LS or LT powerplant into a 1971 to 1972 Pontiac GTO or Lemans demands a fuel system that delivers precise flow under heavy throttle and varying road conditions. This tank kit features a corrosion resistant steel shell engineered to mirror A Body undercarriage contours and bolts directly to factory hangers for a secure, no modification installation, while the 400 LPH pump supports engines producing more than 550 horsepower. The integrated pressure regulator and shortened suction path work together to maintain rail pressure, prevent vapor lock and reduce the risk of cavitation during aggressive acceleration or sustained high speed runs. Complete hardware, including straps, gaskets and mounting bolts, arrives ready for installation so technicians can retain original fuel lines and wiring harness connections with minimal adaptation.
Robust 400 LPH Fuel Pump Design for LS and LT Engines
The heart of this EFI tank kit is a Walbro 400 liters per hour pump engineered to meet the demands of LS and LT powerplants delivering over 550 horsepower. Operating fully submerged in the tank, the pump benefits from continuous coolant action as fuel circulates around its rotor assembly. This immersion cooling prevents heat soak and dramatically reduces the risk of vapor lock during sustained wide-open throttle pulls or extended highway runs. Precise rotor tolerances and a stainless steel inlet strainer work in concert to minimize cavitation, ensuring steady flow even under high cornering loads. As a result, injectors receive uniform fuel pressure, safeguarding air-fuel ratios for crisp throttle response and reliable combustion.
Factory Grade Fitment for 1971 1972 GTO and Lemans Chassis
CNC formed from corrosion resistant steel, the shell of this fuel tank mirrors the underbody shape of the 1971 and 1972 Pontiac A-Body frame with millimeter accuracy. Inlet flanges, vent ports and hanger brackets line up precisely with factory locations so installers can bolt the unit into original mounting points without cutting, welding or shimming. Maintaining the factory crumple zones and preserving frame strength, this direct fit solution also clears control arms, brake lines and exhaust components with no additional trimming. By retaining the factory wiring harness and fuel line routing, technicians save time and avoid errors often encountered when fabricating a custom tank support. The outcome is a seamless integration that blends modern EFI capability with classic chassis integrity.
Complete Fuel Module Kit Streamlining Engine Swap
This all-in-one fuel tank kit arrives with every item needed to finalize an LS or LT engine swap in a 1971-72 GTO or Lemans. Beyond the in-tank pump module and calibrated sending unit, customers receive heavy gauge tank straps, matched filler neck, inline vent filter, molded gaskets and a full set of mounting bolts, nuts and washers. All seals and O-rings are rated for ethanol blended fuels, preventing leaks and maintaining durability over time. By packaging each component to fit the tank's contours, the kit eliminates part hunting and ensures compatibility with existing fuel lines and gauge wiring. Technicians benefit from reduced labor hours and fewer potential fitment issues, turning a complex conversion into a straightforward procedure.
Experience consistent fuel delivery and precise fit for your project. For a smaller capacity fuel pump kit at 255 LPH see our 1971-1972 GTO / Lemans EFI Fuel Tank Kit - 255 LPH Pump.