1964-1967 Chevy El Camino and Wagon EFI Fuel Tank Kit for LS and LT Engines
When an LS or LT engine finds its place under a 1964-1967 Chevrolet El Camino or Wagon, fuel supply becomes mission critical. The 1964-1967 El Camino/Wagon EFI Fuel Tank Kit, 400 LPH Pump, meets that demand with a fully integrated module that fits in the stock tank opening without modifications. It pairs a 400 LPH pump rated for supercharged or over 550 HP applications with an integrated sending unit for continuous fuel level monitoring, a vent filter that blocks water and dust, tank straps, precision molded gaskets, filler neck, and all installation hardware for an direct fit installation in EFI conversion setups. Every component aligns with factory openings to eliminate welding or adapter brackets for a clean, reliable swap.
Premium Fuel Delivery Capacity
The heart of this kit is a Walbro 400 LPH pump designed for supercharged and 550 hp plus engines. It delivers consistent flow under high load and high rpm conditions so the fuel rail remains pressurized when output climbs. This pump is capable of maintaining rail pressure up to 250 psi to match factory injectors and support aftermarket units. Placing the unit in the tank also eliminates external plumbing runs and trims cabin noise by isolating the pump away from the engine bay. The design reduces vapor lock and cavitation for reliable performance even under sustained full output.
Seamless Engine Conversion Compatibility
Engineered specifically for 1964 through 1967 El Camino and Wagon frames, this kit replaces the original tank with a ready to install module that retains factory strap locations and filler neck alignment. The system is tailored for LS and LT fuel rail patterns without any modification to the engine bay or chassis. No extra brackets or third party crossmembers are needed since the mounting points match the original equipment geometry on the frame.
Accurate Monitoring and Tank Ventilation
Accurate level readings come from the precise fuel sending unit calibrated to the unique tank shape, so the gauge reflects true capacity to within a few percent. Ventilation is handled by a fine mesh filter that keeps moisture and debris out while allowing pressure equalization, which aids consistent delivery under hard acceleration or steep gradients. Every component is manufactured in the USA to exact tolerances using materials resistant to corrosion and chemical attack. Together these features give classic El Camino and Wagon owners a turnkey solution to modernize their fuel system without compromise.
To complete your Smaller capacity fuel pump Kit at 255 LPH, consider our 1964-1967 El Camino/Wagon EFI Fuel Tank Kit - 255 LPH Pump.