LS EFI Fuel Tank Kit for 1971-1972 Chevy Monte Carlo with 255 LPH Pump
If you are fitting an LS engine into a 1971 or 1972 Chevy Monte Carlo on the A-Body chassis, this fuel tank kit solves the most common installation headaches by matching original frame brackets and housing a 255 LPH Walbro pump inside a sealed steel cell. Built to factory specifications for bracket locations and vent fittings, it avoids clearance conflicts with suspension components and preserves original fuel line routing. The pump placement inside the cell maintains stable pressure at peak demand and supports up to 550 horsepower in both naturally aspirated and forced induction applications. Installers receive every strap, gasket, and mounting hardware to ensure consistent fuel delivery and prevent leaks during conversion from stock to LS EFI.
Immersed Pump Cooling and Vibration Damping
By positioning the 255 LPH fuel pump directly inside a sealed steel cell, this kit takes advantage of constant fuel contact to draw heat away from critical pump components. The surrounding fuel absorbs thermal energy that would otherwise raise internal temperatures, reducing wear and extending service life even under sustained heavy use. In addition, the thick steel walls of the cell act as a natural barrier to mechanical vibration, isolating pump noise from the chassis and passenger compartment. The result is a smoother and quieter operation, with less strain on the fuel module and more consistent output under varying engine loads. This design also helps prevent cavitation and ensures the pump remains fully primed during high cornering forces or rapid acceleration.
Factory Frame Bracket Alignment for Precise Fit
The tank's mounting points are engineered to match the original bracket locations on the Monte Carlo A Body chassis, eliminating the need for custom fabrication or frame modifications. Each vent fitting and strap anchor is located so that fuel lines and vent hoses follow the stock routing exactly, preserving ground clearance and preventing interference with suspension arms. This precision fit approach not only saves installer hours spent on trial and error but also maintains the integrity of the underbody structure by avoiding any unintended stress on factory rails. Technicians can rely on a drop-in installation that aligns with stock geometry, ensuring a secure mounting that resists seal fatigue and leaks over time.
Comprehensive Hardware Pack for Streamlined Assembly
This all-in-one kit provides every component needed for a complete conversion, including the in-tank pump module, sending unit, tank straps, filler neck, vent filter, gaskets and mounting hardware. Prefit gaskets are cut to exact dimensions and mating surfaces are prepared to meet factory sealing standards, removing guesswork and the need to source parts from multiple suppliers. The filler neck seats perfectly in the original body opening without trimming or modification, and the vent filter snaps into place to allow proper vapor evacuation under a range of conditions. With all items supplied in a single package, installers avoid downtime searching for missing adapters or specialized parts, dramatically reducing overall assembly time.
Stable Fuel Delivery under Peak Demand
The chosen 255-liter-per-hour capacity of the Walbro pump offers a performance margin that supports engine outputs up to 550 horsepower in both naturally aspirated and forced induction configurations. By drawing fuel from the cell's lowest chamber, the pump minimizes the risk of vapor lock and maintains a steady supply during aggressive throttle applications or extended wide-open operation. This reservoir-type setup ensures consistent line pressure and reduces the chance of lean-condition spikes that can harm engine components. Drivers benefit from crisp throttle response and reliable power delivery on both street and track, while tuners gain confidence that the fuel system will meet the highest demand without exceeding its design limits.
Count on reliable performance under the toughest conditions, and for a Larger capacity fuel pump Kit at 400 LPH consider our 1971-1972 Monte Carlo EFI Fuel Tank Kit - 400 LPH Pump.