LS Swap EFI Fuel Tank Kit for 1965-1967 Pontiac GTO
Fuel supply can make or break an LS swap in a classic GTO and this EFI tank kit with a 255 LPH pump is built specifically for 1965 to 1967 Pontiac GTO models. It integrates a Walbro 255 LPH pump within the tank assembly, preserving original mounting points while delivering consistent pressure for engines up to 550 hp. With engineered baffling to prevent fuel starvation during cornering and a calibrated sending unit for accurate gauge readings, the system keeps the engine fed under demanding driving conditions. All necessary hardware arrives ready to install, eliminating the need for modifications and cutting installation time.
OEM Style Direct Fit for 1965 to 1967 Pontiac GTO EFI
The EFI fuel tank kit installs using the factory mounting points of 1965 to 1967 Pontiac GTO models. The tank is engineered to drop in place without any body or frame changes, preserving the classic undercarriage layout. This direct fit approach cuts installation time and reduces the chance of alignment issues, making it ideal for both professional builds and home restorations. All sealing gaskets and mounting straps come with the kit to ensure an airtight seal and secure tank support from the start.
Fuel Baffle Design for Corner Resistance
Engineered baffles inside the tank prevent fuel from shifting during sharp turns or sudden stops, maintaining steady pickup at all times. This approach eliminates the risk of momentary fuel starvation that can occur in a standard reservoir without internal dividers. By channeling fuel toward the pump inlet, the system ensures that high demand from a powerful engine never exceeds the supply into the fuel rail. The result is consistent flow even under aggressive driving conditions.
Integrated Walbro 255 LPH Pump for Up to 550 Horsepower
The system features a Walbro 255 LPH fuel pump mounted inside the tank to support engines up to 550 horsepower. By locating the pump within the fuel reservoir, heat soak is reduced and pump longevity is improved compared to external mount configurations. This setup also simplifies plumbing by keeping high pressure lines short and contained, which in turn stabilizes fuel pressure under load. The package includes all necessary hardware to wire the pump directly to the factory circuit for a clean and reliable installation.
Calibrated Fuel Sending Unit for Accurate Gauge Readings
The built in sending unit is calibrated to match the original gauge resistance curve of Pontiac GTO models, delivering accurate fuel level feedback without aftermarket adapters. Its precision float arm adjusts with minimal slack, preventing erratic jumps that can mislead the driver. Made from corrosion resistant materials, the assembly withstands ethanol blends and ensures long service life. Installers benefit from the plug and play connector design that mates directly with the factory harness.
This kit provides consistent performance and an exact fit for classic GTO builds. To upgrade to a Larger capacity fuel pump Kit at 400 LPH, see our 1965-1967 Pontiac GTO EFI Fuel Tank Kit - 400 LPH Pump.