1981-1988 Oldsmobile Cutlass EFI Fuel Tank Kit for LS and LT Engine Swaps
Every powerful LS or LT swap in a 1981 to 1988 Oldsmobile Cutlass relies on consistent fuel flow and this EFI Fuel Tank Kit is engineered to meet that demand. At its heart the 400 LPH Walbro pump sustains precise pressure under supercharged or over 550 hp conditions, preventing lean spots during spirited acceleration and long highway runs. Complete compatibility with factory mounting points and original fuel line routing ensures a plug and play installation that preserves chassis integrity. Beyond the pump the kit includes all necessary hardware such as the sending unit, tank straps and filler neck to streamline assembly and eliminate extra parts searches.
Steady Fuel Delivery via 400 LPH Walbro Pump
The integration of a 400 LPH Walbro pump into this EFI tank assembly ensures a constant supply of fuel under all operating scenarios. By maintaining precise pressure during rapid throttle transitions, it eliminates lean spots that can occur when demand spikes, especially in spirited driving or sustained high RPM cruising. This constant flow is essential for electronic fuel injection systems to deliver the correct air fuel mixture at every moment, reducing the risk of misfires and preserving engine health. Whether you are navigating winding back roads or maintaining highway speed, the steady supply from this pump supports smooth throttle response and consistent power output throughout your LS or LT swap journey.
Engineered Support for Supercharged and Over 550 HP Applications
Built to handle the demands of forced induction and high output power levels, this tank kit resists common issues like vapor lock and cavitation that can plague lesser setups. Its in tank reservoir design and precise pump control minimize fuel aeration even under hard cornering or aggressive acceleration, ensuring uninterrupted flow. By controlling heat soak inside the unit, the assembly prevents pressure drop during long runs or track use where ambient and underbody temperatures can rise significantly. This robust performance means drivers can push their supercharged LS or LT engines beyond 550 horsepower without compromising fuel delivery or engine reliability.
Exact Fitment on 1981 to 1988 Oldsmobile Cutlass Chassis
Each component of the fuel tank kit is crafted to align with the factory mounting points on the 1981 to 1988 Cutlass frame. The sending unit, filler neck, and original fuel line routing match the stock layout, eliminating the need for chassis modifications or fabrication. This precise fit not only preserves the undercarriage structure and clearances but also accelerates installation by removing guesswork about bracket placement. Installers can rely on CAD guided tank contours and hardware sizing to maintain an authentic look and avoid clearance issues, helping retain the classic Cutlass profile while modernizing its powertrain.
Comprehensive Hardware Package for Seamless Assembly
This kit consolidates every necessary part into one shipment to simplify the installation process. Alongside the 400 LPH pump and tank module, it includes a sending unit optimized for EFI accuracy, steel tank straps sized to OE thickness, a filler neck that aligns with the original inlet location, a vent filter to purge unwanted vapors, precision molded gaskets for leak free connections, and all required fasteners. By bundling these components, builders and technicians bypass multiple trips to parts suppliers, reduce the risk of missing items, and benefit from a coherent assembly workflow that keeps projects on schedule.
Engineered for optimal fuel delivery in your Cutlass swap. To complete your smaller capacity fuel pump kit at 255 LPH consider our 1981-1988 Olds Cutlass EFI Fuel Tank Kit - 255 LPH Pump.