1964-1967 Buick Skylark EFI Fuel Tank Kit for LS and LT Swaps
Installing an LS or LT engine into a 1964-1967 Buick Skylark often exceeds the stock tank's fuel delivery capacity and pressure requirements. The 1964-1967 Skylark EFI Fuel Tank Kit with a Walbro 400 LPH pump upgrades the original tank from within to support engines pushing beyond 550 hp. By retaining factory mounting points and adding a precision fuel level sender, it preserves the classic profile while delivering accurate readings. Included straps, gaskets and a vent filter ensure straightforward installation and reliable operation.
Tailored Tank Conversion for Skylark EFI Upgrades
This kit is engineered specifically for 1964–1967 Buick Skylark models, preserving the original tank shape while integrating modern EFI components. By using factory mounting points and maintaining the stock filler location, the upgrade fits seamlessly without altering bodywork. The in-tank module installs flush within existing openings, keeping the classic profile intact. This design approach supports high-horsepower LS or LT setups while retaining the car's vintage appeal.
Walbro 400 LPH Pump Delivering Steady Pressure
At the heart of the system is a Walbro pump rated at 400 LPH, chosen for its ability to sustain consistent pressure under supercharged or over-550 hp demands. Submerged operation inside the tank minimizes the risk of vapor lock and reduces turbulence in the fuel line. The result is a smooth throttle response and reliable delivery even during hard acceleration. This pump ensures the engine receives a continuous supply of fuel under all conditions.
Precise Sender Maintains Factory Gauge Accuracy
The included sending unit integrates directly with the existing gauge harness to provide accurate fuel level feedback. Its calibrated float arm matches the tank's geometry for consistent readings across the full range. OE-style electrical connectors allow plug-and-play installation, eliminating the need for adapters. This attention to compatibility preserves both dashboard function and period-correct appearance.
OEM Mounting Hardware Ensures Leak Free Fitment
Every strap, gasket, vent filter and filler neck in this kit matches original specifications to simplify the installation process. Components line up with factory bolt patterns for a secure, leak free seal without custom fabrication or welding. Plug-and-play plumbing follows the car's stock routing to reduce assembly time and potential misalignment. This direct-fit strategy lets installers complete the swap confidently and efficiently.
Count on reliable fuel flow for your LS or LT swap. For a smaller capacity fuel pump Kit at 255 LPH see our 1964-1967 Skylark EFI Fuel Tank Kit - 255 LPH Pump.