1965 Pontiac Lemans EFI Fuel Tank Kit 400 LPH Pump for LS and LT Swaps
Whether you're swapping an LS or LT powerplant into a 1965 Pontiac Lemans A-Body, this EFI fuel tank kit with a 400 LPH pump is engineered to maintain consistent pressure under heavy throttle pulls. Its stamped steel tank aligns with factory mounting points to minimize fabrication, and the submerged Walbro pump design lowers internal temperatures to prevent vapor lock during spirited use. A calibrated sending unit feeds accurate level data to the stock gauge cluster while sealed vents and precision gaskets preserve system integrity across varied driving conditions. Installation cuts labor time by reusing the original filler neck and strap brackets, keeping underbody clearances tight without altering the chassis structure.
Submerged Walbro 400 LPH Pump Cooling and Consistent Flow
Housing the Walbro 400 LPH pump entirely within the fuel mass delivers natural cooling benefits that maintain low pump temperature even during extended throttle runs. This constant liquid contact virtually eliminates vapor lock in hot underbody zones or after spirited driving sessions. By supporting flow rates beyond 550 horsepower demands, the design ensures throttle response remains crisp without fear of fuel starvation during rapid acceleration or high load events. The proven pump architecture also contributes to a quieter operation and delivers reliable performance over thousands of miles, reinforcing confidence in demanding LS or LT setups.
Factory Contour Stamped Steel Tank for Precise Fitment
Formed from heavy gauge stamped steel, the tank mirrors the original 1965 Pontiac Lemans A body chassis profile to preserve classic lines and underbody clearances. OEM style mounting points, filler neck position, and strap brackets align with existing holes, cutting down fabrication time and minimizing labor costs. The robust steel shell resists flex or deformation under load and withstands corrosion from fuel vapors and road elements. This direct bolt-in approach integrates modern EFI capability into the vintage frame without altering the factory structure, keeping installation straightforward and maintaining proper ground clearance.
Precision Fuel Sending Unit for Reliable Gauge Readings
Engineered to OEM tolerance standards, the sending unit converts fuel level changes into accurate electrical signals for the stock gauge cluster, eliminating erratic readouts common in many conversions. Its freely moving float arm adapts to changes in vehicle attitude, preventing binding in cornering or during abrupt stops. Durable construction and tight calibration resist drift over extended service intervals, delivering consistent feedback on remaining fuel. Reliable gauge performance lets drivers plan refills with certainty, avoiding unexpected fuel drops during long highway runs or spirited canyon drives.
Vent Filtration and Precision Gaskets for System Integrity
Sealed vents equipped with filtration media block moisture and debris from entering the tank while allowing smooth pressure equalization as fuel is consumed or refilled. High quality gaskets seal every joint to prevent leaks and maintain the slight positive pressure needed for reliable EFI operation. Together these parts stabilize fuel pressure during transient engine loads, enhancing throttle response consistency when power demands shift rapidly. The integrated vent and seal system safeguards pump and sender components against contamination, ensuring long term durability in both daily driving and high output performance applications.
Count on precise fitment and dependable pressure delivery in every drive. For a Smaller capacity fuel pump Kit at 255 LPH see our 1965 Pontiac Lemans EFI Fuel Tank Kit - 255 LPH Pump.