LS and LT EFI Fuel Tank Kit with 400 LPH Pump for 1965 Pontiac Lemans
When fitting an LS or LT engine into a 1965 Pontiac Lemans, keeping fuel pressure steady under heavy throttle is vital and this EFI tank with a 400 LPH pump answers that need. It drops into the factory mounting points on the A body chassis to cut down on trimming and welding, so installation time stays tight and underbody clearance remains unchanged. Housing the Walbro pump in the fuel mass lowers its operating temperature to reduce vapor lock risk during spirited runs and sustain consistent flow for high output operation. A calibrated sending unit supplies accurate tank level data to the stock gauge cluster for confident monitoring on long hauls or spirited canyon drive days.
In-tank Walbro Pump Cooling for Reliable Pressure
The fully submerged Walbro 400 LPH pump sits entirely within the fuel mass to draw on natural liquid cooling, keeping operating temperatures low even during sustained wide-open throttle sessions. This constant thermal regulation virtually eliminates vapor lock risks that can occur in hot underbody areas, ensuring uninterrupted flow under extreme acceleration. Supporting setups above 550 horsepower, the design delivers a consistent high volume of fuel to the EFI system for crisp throttle response and dependable performance. Beyond cooling, the pump's location also muffles operational noise, resulting in quieter engine bays and long-term reliability across thousands of highway or track miles.
Stamped Steel Tank Shaped for OEM Mounting Accuracy
Formed from heavy gauge mild steel, the replacement tank follows the contours of the original 1965 A-Body frame to preserve chassis lines and underbody clearance. Factory-style mounting lugs, filler neck positioning, and strap brackets align perfectly with existing holes, eliminating the need for extensive cutting, welding, or custom brackets. The robust shell resists flexing under load and withstands exposure to fuel vapors and road debris, helping to maintain structural integrity over time. This direct bolt-in approach streamlines installation, preserves ground clearance, and holds true to the vehicle's vintage profile while integrating modern EFI capabilities.
Precision Sending Unit Ensuring Consistent Gauge Feedback
Built to match original equipment tolerances, the calibrated sending unit converts changes in fuel level into accurate electrical signals for the factory gauge cluster. Its low-friction float arm moves freely to adapt to vehicle pitch and cornering forces, preventing binding or false readings during spirited driving or emergency stops. The sender's tight calibration resists drift over long service intervals, providing confidence on extended highway trips and canyon runs. Installing this reliable sender translates into predictable fuel monitoring, allowing drivers to plan refills without concern for unexpected tank depletion.
Sealed Vent Filtration and Gasket Engineering for Integrity
The integrated vent filter uses a finely woven element to block moisture and contaminants while permitting smooth tank breathing as fuel is consumed or added. Precision molded gaskets seal every mating surface, preventing external leaks and preserving the slight positive tank pressure required for stable EFI operation. Together, these components maintain system integrity under rapid throttle changes, supporting consistent injector performance and engine response. By safeguarding internal components from debris and moisture, the vent and seal assembly contributes to long-term durability in daily driven or performance-focused LS and LT engine conversions.