1969-1970 Impala EFI Fuel Tank Kit with 400 LPH Pump
Maintaining steady fuel pressure during hard acceleration in a 1969 or 1970 Impala fitted with an LS powerplant is critical, and this EFI fuel tank kit with its 400 LPH Walbro pump ensures the inlet remains covered to prevent cavitation. Precision-matched contours follow the B Body undercarriage so the reservoir bolts into factory crossmembers without trimming or filler work. With a galvanized steel shell and powder coat finish, the tank resists corrosion and vibration in demanding conditions. Installers benefit from the complete hardware set and plug and play design that supports up to 750 horsepower setups while simplifying the LS swap.
Optimized In Tank Pump Placement for Stable Fuel Pressure
The integration of a 400 LPH Walbro pump directly inside the reservoir ensures the inlet remains fully submerged during hard acceleration and sharp turns. By maintaining continuous immersion, this arrangement virtually eliminates cavitation and vapor lock that can lead to sudden pressure drops and engine hesitation. Delivering enough volume for engines producing up to 750 horsepower, the system holds steady under sustained loads and varying driving conditions. Quiet operation and reduced operating heat also contribute to longer service intervals and more predictable performance. This design choice places the pumping mechanism in its ideal environment for uninterrupted flow.
Precision Contouring to Impala B Body Undercarriage
This fuel tank kit is sculpted to be three quarters of an inch deeper and five inches shorter than the original unit, following the exact lines of the 1969-1970 Impala B body chassis. Engineers mapped every curve to match factory crossmember locations, so installers bolt the reservoir into place without trimming sheet metal or using filler panels. The tailored profile preserves ground clearance and avoids conflicts with exhaust hangers, brake lines and frame reinforcements. As a result, technicians save hours of test fitting and can rely on a true drop-in experience that respects the car's original geometry. Final alignment checks confirm seamless integration into the underbody architecture.
Robust Galvanized Shell with Protective Coating
Constructed from galvanized steel, the reservoir resists moisture and road salt that commonly attack bare metal surfaces. A durable powder coat finish forms a second barrier against abrasion, fuel oils and environmental contaminants, helping the structure maintain integrity over years of use. Weld seams undergo rigorous inspection to verify airtight joins that withstand vibration and fuel pressure pulsations in high output setups. Steel thickness is calibrated to handle the dynamic loads encountered on the road without excessive flex or deformation. Combined, these measures deliver a corrosion defence system built to outlast typical service cycles.
Comprehensive Kit Design Streamlines LS Conversion
Every component needed for a successful swap is packed in one box, eliminating trips to multiple suppliers and cutting project lead time. The package includes the 400 LPH pump module, sending unit calibrated for accurate gauge readings, heavy-duty straps, a filler neck, vent filter, precision cut gaskets and all fasteners. Each item is matched to the tank's fittings and flow requirements, so fuel hoses connect directly without adapters. Clear assembly instructions guide installers step by step, reducing guesswork and rework. By offering a complete hardware set and plug-and-play compatibility, the kit lets enthusiasts focus on the mechanical challenge rather than hunting parts.
For the same fuel tank but with a 255LPH pump see our 1969-1970 Impala EFI Fuel Tank kit - 255 LPH Pump and trust in consistent pressure for your build.