1965-1967 Pontiac GTO EFI Fuel Tank Kit for LS and LT Engine Swaps
Swapping a modern LS or LT powerplant into a classic GTO demands uninterrupted fuel delivery and this factory contoured EFI tank kit is engineered to handle that challenge. By nesting the 400 LPH Walbro pump within a molded reservoir following the A-Body floor pan, installation avoids extra brackets or rail cuts and keeps the pump submerged for reliable performance under cornering loads. All included vent filters, gaskets and mounting straps meet ethanol blend requirements and support builds up to 550 hp without fitment issues. Installers can rely on factory mounting points to preserve ground clearance and reduce shop hours.
Custom Contoured Reservoir for 1965 to 1967 GTO A Body
The fuel tank's reservoir is molded to follow the floor pan contours of the 1965 to 1967 Pontiac GTO A Body chassis, ensuring a precise fit that eliminates the need for extra brackets or frame rail modifications. By locking into the original mounting points, the design cuts down on alignment frustration and reduces vibration that might otherwise loosen fittings during spirited driving. Installers benefit from a plug-and-play experience, preserving the vehicle's original ground clearance and keeping the classic stance intact. This tailored approach also shortens shop time by removing guesswork in bracket fabrication and tank positioning.
Fully Submerged 400 LPH Pump Design for Stable Fuel Flow
Housed entirely within the molded reservoir, the 400 LPH Walbro pump remains submerged under all cornering and acceleration forces, drawing on the surrounding fuel as a coolant to prevent vapor formation and pressure drop. This internal placement filters out debris before it reaches the pump inlet, enhancing longevity and reducing maintenance intervals for sensitive injectors. Whether feeding a naturally aspirated setup or a supercharged engine up to 550 horsepower, the system sustains consistent pressure throughout wide-open throttle conditions. Builders will notice a crisp throttle response and reliable performance from cold start through extended high-load runs.
Ethanol Tolerance and Corrosion Resistance in Every Component
All plastics and elastomers in the tank assembly have been screened for resistance to modern gasoline blends containing ethanol, guarding against swelling or seal degradation that can lead to leaks. The reservoir and pump housing use specialty polymers rated for chemical exposure, while gaskets maintain their sealing integrity after repeated cycles. Filler neck, vent filter, straps and hardware are treated to withstand moisture and road salt without surface corrosion. Together, these choices deliver a fuel system that remains reliable mile after mile, whether under daily street use or on long highway cruises.
Comprehensive Kit Streamlining Your LS or LT Swap
This complete EFI tank kit arrives with every critical component for a seamless LS or LT engine retrofit on the classic GTO A Body platform. In addition to the 400 LPH pump module and sending unit calibrated for the stock gauge cluster, the kit includes tank straps, filler neck, vent filter, gaskets and all necessary hardware. With no parts left to source separately, installers avoid delays caused by mismatched fittings or missing pieces. The streamlined package lets technicians focus on fuel line routing, wiring and engine tuning rather than hunting for components, reducing overall labor hours.
You can count on consistent fuel delivery and reliable pump cooling under all driving conditions. For a smaller capacity fuel pump Kit at 255 LPH, consider our 1965-1967 Pontiac GTO EFI Fuel Tank Kit - 255 LPH Pump.