EFI Fuel Tank Kit with 255 LPH Pump for 1964-1967 Oldsmobile Cutlass LS Swap
Whether you are tackling a 1964-1967 Oldsmobile Cutlass LS conversion or restoring a 442, maintaining a reliable fuel supply is paramount. The 1964-1967 Cutlass EFI Fuel Tank Kit, 255 LPH Pump, delivers a direct fit design that nests in the stock trunk cavity without any body modifications while matching factory mounting points. An in tank module combines a 255 liter per hour Walbro pump capable of supporting up to 550 horsepower with a precision fuel level sender, while a vent filter and included filler neck regulate internal pressure to prevent vacuum lock during cornering. Complete with tank straps, gaskets, mounting hardware and a fuel tank assembly built in the USA, this kit ensures constant pressure through sudden throttle changes and eases service with its simple modular layout.
Tailored Fit for Classic A Bodies
The 1964 to 1967 Cutlass EFI tank kit is engineered to replace the stock fuel reservoir for both Cutlass and 442 models without altering the vehicle sheet metal. Each unit is molded to the exact footprint of the original fuel tank area, matching the factory pan contours and bracket locations. In collaboration with MuscleRods engineers, this kit aligns inlet and outlet ports to their factory positions, ensuring correct engine placement and drive shaft angle. Proper driveline alignment not only reduces vibration but also preserves handling characteristics and gearbox longevity. Installation is simplified to a bolt in process, eliminating the need for welding, cutting, or custom fabrication. As a result, installers can retain the classic interior floor pan appearance while upgrading to modern fuel injection technology.
Superior Fuel Delivery
At the heart of the system is a premium Walbro 255 LPH pump capable of supporting up to 550 HP. The High-flow design maintains steady pressure under heavy load, preventing lean conditions during hard acceleration or steep climbs. By locating the pump at the lowest point in the bowl, the kit ensures uninterrupted feed even when fuel levels drop below a quarter tank. In real world road and track tests, the assembly delivered consistent flow for aggressive cornering and sustained high speed runs. Improved fuel supply stability translates to smoother throttle response, more predictable engine mapping and optimized combustion efficiency. The result is both sharper acceleration off the line and improved economy during steady cruise.
Precision Construction and Reliability
Manufactured in the United States, this tank kit features a heavy gauge steel shell treated with corrosion resistant coatings to withstand exposure to moisture and road salt. A precision float sender is calibrated to the original gauge resistance curve, delivering accurate fuel level readings under all operating angles. Fuel fill and vent connections follow factory routing to preserve exterior styling and prevent interference with body lines. Every weld is executed by certified technicians and every seal undergoes pressure testing to guarantee leak free performance. Premium wiring harnesses and terminals resist heat and vibration, ensuring long service life. With this complete package, enthusiasts gain a turnkey solution that bridges vintage design with modern EFI demands, all backed by American craftsmanship and rigorous quality inspection.
To complement your Larger capacity fuel pump Kit at 400 LPH, consider our 1964-1967 Cutlass EFI Fuel Tank Kit - 400 LPH Pump.