1958 Chevy Impala LS Swap EFI Fuel Tank Kit with 255 LPH Pump
Fuel delivery can make or break an LS conversion in a classic B Body chassis and the 1958 Impala EFI Fuel Tank Kit - 255 LPH Pump tackles that core need by aligning with the original frame rails. It slots in without cutting or welding, preserving ground clearance and matching factory mounting points. The submerged pump module houses a robust 255 LPH Walbro unit to maintain steady pressure for engines up to 550 horsepower. Every sending unit, strap, gasket and fitting is included so you can finish installation without extra trips for parts.
Engineered Fit for 1958 Chevy B Body Frame Rails
The fuel tank is precisely shaped to match the original 1958 Impala B Body chassis, ensuring it seats cleanly between the frame rails without any trimming or welding. Factory mounting bosses line up directly with existing brackets and cross members, preserving the drive height and the underbody profile as designed at the factory. This exact alignment helps maintain the correct belt and pulley clearances at the rear of the LS engine and prevents unwanted contact with suspension or exhaust hardware. By respecting the stock geometry, this tank minimizes installation time and preserves the car's handling balance. Installers can rely on a seamless integration that maintains the timeless lines of the classic B Body.
Integrated In Tank Pump Module for Enhanced Reliability
Hiding the 255 LPH Walbro pump inside the tank shell protects it from underhood heat and reduces the risk of vapor lock under heavy load or high ambient temperatures. Continuous immersion in fuel provides cooling that prevents motor burnout, extending the service life of the unit even in spirited driving or track sessions. A built in mesh filter keeps debris away from the impeller, while a single plug connector simplifies wiring and reduces potential leak paths. With all components secured within the tank, the assembly runs quieter and delivers a steadier pressure signal to the rail. This design choice pays dividends in long-term dependability for any LS swap.
Consistent 255 LPH Flow for Peak LS Engine Performance
Rated to support engines up to 550 horsepower, the 255 LPH pump maintains a stable fuel stream during wide open throttle and steep inclines, safeguarding the air-fuel ratio from lean spikes. By delivering a constant volume of fuel at all RPM ranges, it allows the engine management system to fine tune injection timing and spark advance without chasing pressure fluctuations. Drivers will notice crisp throttle response from idle to redline and steady power delivery whether cruising or accelerating hard. This level of control is vital for daily driven classics and weekend racers alike. Matching the pump output to the LS platform ensures the engine is never starved of fuel.
Complete Kit Streamlines Installation Process
This turnkey package arrives with every component needed for a full EFI conversion, including the 255 LPH pump, in tank module, sending unit, filler neck, vent filter, straps, gaskets and mounting hardware. All fittings are pre matched to the tank geometry, so you avoid multiple trips to parts suppliers and eliminate fitment guesswork. Clear access to mounting points and factory style harness connectors makes routing hoses and wiring fast and straightforward. By covering sending, venting and fastening in one box, the kit lets you focus on engine mounting rather than scavenging for parts. The result is a hassle free swap that keeps your Impala project on track.
Designed for reliable fuel delivery and simple installation this kit ensures steady performance on every drive. For a larger capacity fuel pump Kit at 400 LPH see our 1958 Impala EFI Fuel Tank Kit - 400 LPH Pump.