LS Fuel Tank Kit with 400 LPH Pump for 1971-1972 Chevy Monte Carlo
For many LS swaps in a classic Monte Carlo chassis, stock fuel systems struggle to deliver consistent volume under high engine demands. This EFI fuel tank kit addresses that by combining a 400 LPH Walbro pump with a purpose built tank that fits inside the Monte Carlo A Body frame rails. At its core the integrated vent filter maintains steady pressure to prevent air ingestion while the precision fuel level sender keeps your gauge readings true during street or track use. Installation hardware and detailed instructions are included so you can drop in this complete solution without hours of custom fabrication.
Consistent High Volume Delivery for Power Demands
The 400 LPH Walbro pump at the heart of this kit is calibrated to support supercharged setups and engines exceeding 550 horsepower, providing uninterrupted fuel flow under extreme demand. Placing the pump inside the tank minimizes aeration and turbulence, ensuring stable supply through every accelerator tip-in. The robust in-tank module isolates the pump from heat soak and road vibration, extending service life and performance consistency. With quieter operation and simplified fuel line routing, tuners can focus on optimizing engine calibration instead of troubleshooting pressure loss.
Integrated Vent Filter and Accurate Level Sensing
An integrated vent filter preserves steady tank pressure by preventing air ingestion that can disrupt fuel delivery at high G-forces or rapid direction changes. Paired with a precision fuel-level sender, this arrangement ensures reliable gauge readings during aggressive cornering or braking. Maintaining constant pressure not only protects against sputtering but also delivers predictable throttle response on both street cruises and track sessions. This coordinated approach guarantees your LS swap remains well fed, regardless of driving conditions.
Purpose Built Fuel Tank for 1971-1972 Monte Carlo A Body
Crafted to fit precisely within the frame rails of the Monte Carlo A Body chassis, the custom tank eliminates the need for cutting or extensive modification. Complete installation hardware-including straps, filler neck, gaskets and mounting bolts-streamlines the swap process and reduces shop time. Detailed step-by-step instructions guide you through removing the stock tank and installing this EFI solution, so even first-time fabricators can achieve a professional result. The end product retains the classic look of your ride while delivering modern fuel system reliability for your LS engine conversion.
Built for reliability under track use. To complement your system consider our 1971-1972 Monte Carlo EFI Fuel Tank Kit - 255 LPH Pump which offers a Smaller capacity fuel pump Kit at 255 LPH.