LS EFI Fuel Tank Kit with 400 LPH Pump for 1966-1967 Chevy II/Nova X-Body
When converting a classic Chevy II for an LS swap the 1966-1967 Chevy II EFI Fuel Tank Kit 400 LPH Pump meets the increased flow demand by replacing the stock tank with a robust steel shell housing a Walbro module. Designed to fit the Chevy II X Body frame, the assembly uses original mounting points and factory straps to preserve ground clearance while boosting capacity and ensuring continuous supply under hard acceleration. With the pump fully submerged in fuel the surrounding gasoline acts as a heat sink to prevent vapor lock during spirited driving and the integrated sender delivers direct signal to modern EFI systems for accurate level readings from day one.
Precision Engineered Steel Shell for Chevy II X-Body
The fuel tank's heavy gauge steel shell is stamped to the exact contours of 1966-1967 Chevy II and Nova X-Body frames, ensuring a seamless integration with the vehicle's undercarriage. By retaining original mounting points and factory straps, this design preserves ground clearance and the classic profile without any chassis alteration. The precision fitment eliminates the need for custom brackets or fabrication, cutting installation time and reducing alignment concerns. A corrosion resistant surface finish is applied to withstand modern ethanol blends and harsh road conditions, while the increased internal volume offers additional fuel reserve for extended driving or track use.
Immersion Cooling for Consistent High Volume Flow
Positioning the 400 LPH Walbro electric pump fully submerged in the tank harnesses the surrounding gasoline as an effective heat sink, lowering operating temperature during sustained high rpm runs. This immersion cooling method prevents vapor lock under hot ambient conditions or spirited driving, keeping fuel delivery continuous and reliable for engines producing over 550 hp. Internally, the pump's precision components resist wear and deliver steady flow rates, while vibration-damping mounts reduce noise and protect the housing from fatigue. Together these features ensure uninterrupted fuel supply when performance demands peak.
Integrated Fuel Level Sender for Modern EFI Calibration
The in-tank sending unit is pre-calibrated to interface directly with contemporary electronic fuel injection systems, eliminating the need for adapter harnesses or custom housings. From the first ignition cycle, this plug and play approach provides accurate level readings to both the engine control module and dash gauge, improving driveability by maintaining reliable fuel information under all operating conditions. Sealed electrical connectors guard against moisture intrusion, preserving signal integrity over thousands of miles. Technicians benefit from straightforward diagnostics and swift replacement when servicing is required.
Comprehensive Kit Design for Streamlined Installation
This all-in-one kit delivers every component needed for a complete upgrade, including the 400 LPH pump module, sending unit, tank straps, filler neck, vent filter, gaskets, and mounting hardware. A detailed installation guide walks through tank removal and assembly using existing crossmember clearances and factory brackets, so no specialty tools or additional parts are required. By consolidating key elements into a single package, labor hours are minimized and swap complexity is reduced for both seasoned builders and first-time installers. The result is a ready to install solution that lets you focus on completing your LS engine conversion with confidence.
Trust the precision fit and robust design. For a Smaller capacity fuel pump Kit at 255 LPH consider our 1966-1967 Chevy II EFI Fuel Tank Kit - 255 LPH Pump.