LS Swap EFI Fuel Tank Kit with 400 LPH Pump for 1971-1972 Chevy Monte Carlo
Securing dependable fuel flow is critical when fitting an LS engine into a 1971-1972 Monte Carlo A Body so this EFI fuel tank kit uses a submerged 400 LPH pump to resist vapor lock during cornering. Because it stays fully submerged the pump runs cooler and maintains steady flow under rapid acceleration or extended highway driving. The integrated vent filter and precision level sender preserve consistent pressure and deliver accurate gauge readings even when fuel shifts away from the pickup. Installation follows factory frame rails without trimming since the tank contours align with original mounting points and the kit includes straps, gaskets, filler neck and hardware.
Submerged 400 LPH Walbro Pump Performance
Placing the 400 LPH Walbro pump beneath the fuel surface ensures uninterrupted flow during rapid acceleration or sustained high load. Immersion prevents vapor formation that can lead to hesitation, and it keeps the unit cool by maintaining continuous contact with liquid fuel. A constant operating temperature reduces wear on internal components, extending service life even when supporting supercharged or over 550 hp EFI setups. Internal mounting also minimizes exposure to harsh road conditions, cutting down on vibration and mechanical stress. The result is stable fuel delivery that meets the demands of spirited driving without compromise.
Synergy of Precision Sender and Vent Filter
The integrated vent filter works in concert with the precision fuel level sender to maintain steady pressure and accurate gauge readings under all driving conditions. By filtering incoming air during pressure equalization, the vent filter prevents airborne debris that could disrupt pump performance or clog passages. Meanwhile, the sending unit measures fuel height directly, counteracting fuel slosh in corners or over uneven terrain. This coordinated design stops false low fuel warnings and avoids pump starvation that can occur when the pickup runs dry. Together they deliver reliable feedback and help safeguard against unexpected fuel starvation on twisty back roads or long highway runs.
Custom Fit Tank Design for 1971 to 1972 Monte Carlo
This tank is engineered to nest precisely between the factory frame rails of the 1971 to 1972 Monte Carlo A Body chassis without any trimming or modification. Its contours mirror original mounting points to preserve underbody clearance and structural integrity, so the vehicle's profile and suspension geometry remain unchanged. Included gaskets, straps and filler neck components match OE dimensions, allowing the reservoir to integrate seamlessly with stock hardware. Detailed instructions guide the removal of the original tank and the secure attachment of the new unit, reducing installation time for both professional and home garages.
All In One Kit Streamlines Installation
The complete kit arrives ready for assembly with every component required to replace the stock tank in one package. Alongside the submerged pump and sending unit are tank straps, filler neck, vent filter, sealing gaskets and mounting bolts, all clearly labeled for easy identification. A step by step instruction manual outlines the sequence and torque settings needed to achieve a leak free setup. By providing a fully matched hardware set and preassembled pump module, the kit removes the need to source additional parts and helps builders complete an LS conversion efficiently.
Count on steady fuel delivery across every mile. For a Smaller capacity fuel pump Kit at 255 LPH see our 1971-1972 Monte Carlo EFI Fuel Tank Kit - 255 LPH Pump.