1949-1952 Chevy EFI Fuel Tank Kit with 400 LPH Pump
Swapping an LS or LT power plant into a 1949 through 1952 Chevy demands a stable fuel feed and the 1949-1952 Chevy EFI Fuel Tank Kit - Stock Capacity - 400 LPH Pump addresses that need. Inside the tank, a precision module houses a 400 LPH pump from Walbro that holds pressure even when you push beyond 550 horsepower. With an integrated sending unit calibrated to the stock tank geometry you get reliable fuel level readings under acceleration and cornering. By placing the pump inside the tank you also benefit from cooler fuel temperatures and reduced vapor lock risk.
In-Tank Pump Module for Consistent Pressure
This kit features an integrated pump module that houses the Walbro unit, strainer, and check valve in a sealed assembly inside the tank. By containing all critical components in one location, pressure fluctuations are minimized and return plumbing is eliminated. The built-in strainer protects the pump from debris and extends service life. Overall, this design yields a steady fuel rail pressure that adapts smoothly to rapid throttle changes and heavy engine loads.
400 LPH Walbro Unit Supporting 550+ Horsepower
The heart of the system is a 400 LPH Walbro pump calibrated for builds exceeding 550 horsepower. Mounted internally, it benefits from cooler ambient fuel temperatures and substantially lowers the risk of vapor lock compared to external setups. Its capacity ensures the engine receives ample fuel during extended wide-open-throttle runs or high-boost conditions. Consistent flow rate under peak demand helps maintain horsepower delivery across the entire RPM range.
Engineered Sending Unit for Accurate Fuel Monitoring
The sending unit is custom-calibrated to the original 1949–1952 Chevy tank contour, ensuring gauge readings remain precise under cornering, braking, and hard acceleration. Modern EFI systems rely on accurate fuel level data for diagnostics and pump control, making reliable sensing critical to performance. This engineered sensor prevents unexpected run-outs on spirited drives or long trips, giving drivers confidence in their fuel status at all times.
Comprehensive Kit for Straightforward Vintage Chevy Conversion
Every necessary element is included to streamline your EFI upgrade: pump module, sending unit, tank straps, filler neck, vent filter, gaskets, and hardware. All pieces are preselected for direct fit with original mounting points, eliminating the need to source aftermarket adapters. This unified approach reduces assembly time and potential leaks, letting both hobbyists and professional shops complete the conversion with factory-level alignment and sealing.
Count on its durable design for reliable fuel delivery. To explore the same kit but with the 255 LPH pump that offers less horsepower, see our 1949-1952 Chevy EFI Fuel Tank Kit - Stock Capacity - 255 LPH Pump.