LS EFI Fuel Tank Kit for 1958 Chevy Impala B-Body with 255 LPH Pump
If you're building an LS swap into a 1958 Chevy Impala B Body chassis the 1958 Impala EFI Fuel Tank Kit with 255 LPH Pump delivers a dedicated fuel reservoir and pump arrangement that nests neatly between the frame rails. This kit encloses a reliable Walbro 255 LPH pump inside a corrosion resistant steel body to keep the motor immersed in fuel and eliminate vapor lock under sustained load or hot conditions. Its mounting bosses align with original bracket points and the included straps gaskets and fittings ensure installation proceeds without trimming or extra parts. Engineers rated the assembly for engines up to 550 horsepower and the steady flow supports crisp throttle response on road or track.
Direct Mounting for 1958 Chevy Impala Frame Rails
The fuel tank kit is shaped to slip precisely between the frame rails of a 1958 Chevy Impala B Body chassis without trimming or rail modification. Factory mounting bosses are positioned to match the original bracket locations, preserving ground clearance and maintaining proper underbody geometry. This fidelity supports correct belt and pulley clearance for the LS engine block to frame alignment and maintains original fuel line routes along the frame rail pockets. By mirroring the stock tank footprint, installers avoid time consuming trial fits and adjustment loops. The corrosion resistant steel shell strengthens the chassis footprint while resisting road debris and environmental exposure. Overall this direct mount approach ensures a secure foundation for sustained LS engine performance.
Immersed In Tank Pump for Consistent Fuel Supply
An in tank fuel pump module encloses the Walbro 255 LPH unit entirely within the steel shell, ensuring the impeller remains submerged under all driving conditions. Continuous immersion keeps the pump motor cool and virtually eliminates vapor lock risk during prolonged high load or hot ambient operation. A fine mesh sock filter on the inlet prevents debris from reaching the impeller while a sealed single plug connector simplifies wiring and guards against leaks. Submerging the pump also dampens noise output and smooths pressure pulses, delivering a dependable flow signal to the engine control unit. This immersed arrangement minimizes cavitation and maximizes pump efficiency even when cornering or on uneven road surfaces. By maintaining constant pressure, it supports precise injection timing and combustion stability at all RPM ranges. This configuration reliably supports LS engine outputs up to 550 horsepower and sustains responsive throttle control from idle through redline.
Complete EFI Conversion Kit for Simplified Installation
This fuel tank kit arrives as a fully assembled package that includes every component necessary for an LS swap fuel system upgrade. The sending unit, filler neck, vent filter, tank straps, sealing gaskets and all required hardware are pre matched to the steel shell profile to eliminate fitment guesswork. Factory style hose fittings and clear access to mounting bosses streamline line routing, while the matched strap assembly holds the tank securely in place. By bundling these items with the pump module, installers avoid trips for missing parts and reduce project downtime. The included vent filter maintains proper tank breathing under varying pressures and prevents fuel vapor from escaping in confined engine compartment spaces. The kit architecture ensures a straightforward installation process for both street and track builds, keeping your Impala on schedule for engine tuning and testing.
To support higher demand consider our Larger capacity fuel pump Kit at 400 LPH 1958 Impala EFI Fuel Tank Kit - 400 LPH Pump, offering consistent delivery when you need it most.