1965-1966 Chevy Impala and Caprice LS EFI Fuel Tank Kit with 255 LPH Pump
For 1965 and 1966 Chevy Impala and Caprice B Body restorations converting to LS power, maintaining consistent fuel pressure under sudden throttle loads is critical and the 1965-1966 Impala EFI Fuel Tank Kit - 255 LPH Pump fulfills this need with a 255 liter per hour Walbro pump rated for engines up to 550 hp. The stainless steel fuel tank resists ethanol blends and corrosion while preserving all factory mounting points for direct drop in installation with inlet and outlet ports that align to stock fuel lines and maintain the original underbody profile. The kit includes an in tank pump module sending unit tank straps filler neck vent filter gaskets and mounting hardware for a ready to install EFI fuel delivery system. For outputs above 550 hp choose the 400 liter per hour pump kit compatible with this stainless steel design. This targeted design eliminates custom bracket fabrication and reduces labor time
Overview
The 1965-1966 Impala EFI Fuel Tank Kit with a 255 LPH pump delivers a complete solution for modernizing the fuel delivery system on classic Chevy B-Body models. Designed specifically for 1965-1966 Impala vehicles, this assembly replaces the original tank with a stainless steel unit that resists corrosion and maintains structural integrity under demanding conditions. The included Walbro pump supplies a maximum flow of 255 liters per hour, supporting engine outputs up to 550 horsepower. This combination ensures that engine response remains consistent across the entire operating range, from idle to wide open throttle.
Engineering Highlights
The key feature of this kit is the 255 LPH pump, which features an internal bypass that prevents vapor lock and maintains steady pressure even under sustained high load. The stainless steel tank features internal baffling that reduces fuel slosh and helps maintain consistent fuel pickup during cornering and hard acceleration. This design enhances fuel efficiency by ensuring the engine always receives a continuous supply, minimizing lean conditions that can lead to hesitation or power loss. Precision welding and an integrated sender unit mount preserve factory mounting points, simplifying installation and preserving chassis rigidity.
Compatibility and Integration
Engineers at MuscleRods collaborated on the mount integration to guarantee correct placement of the LS powerplant and precise drivetrain angles. By matching the outlet height and inlet position to factory locations, this kit fits seamlessly into the Impala's frame rails without additional fabrication. The conversion kit retains the vehicle's original venting and rollover protection features while providing modern EFI capability. Whether upgrading to a small block or modern LS series engine, this assembly aligns fuel feed and return lines for optimal flow dynamics and helps deliver consistent performance on both street and track applications.
For outputs above 550 hp, upgrade with our 1965-1966 Impala EFI Fuel Tank Kit - 400 LPH Pump to equip your project with a larger capacity fuel pump Kit at 400 LPH.