1981-1988 Oldsmobile Cutlass LS/LT EFI Fuel Tank Kit with 400 LPH Pump
When installing an LS or LT drivetrain into a 1981 to 1988 Oldsmobile Cutlass the foundation for reliable power delivery depends on stable fuel flow and this EFI fuel tank kit steps in to meet that need with a 400 LPH Walbro pump. Its integrated pump maintains precise pressure during rapid acceleration and sustained output runs up to 550 hp while the included sending unit, filler neck, tank straps and mounting hardware streamline the assembly process. By matching factory mounting points and original fuel line routing the complete package delivers a straightforward installation that preserves chassis integrity and avoids fabrication delays.
Consistent Pressure from the 400 LPH Walbro Pump
By integrating a 400 LPH Walbro fuel pump directly into the tank module, this kit maintains steady pressure through sudden throttle shifts and sustained high rpm cruising. The pump's capacity supports builds beyond 550 horsepower and handles the demands of supercharged engines without stumbling. Consistent delivery of fuel is critical for electronic injection systems to tune mixture accurately under all loads. Drivers experience smooth throttle response and minimal risk of lean condition during spirited driving. This reliability helps protect internal components and ensures predictable power output throughout every drive in an LS or LT swap application.
Design to Prevent Vapor Lock and Fuel Aeration
The tank's internal reservoir shape and pump control strategy work together to combat vapor lock and fuel aeration that can occur during hard cornering or track use. By minimizing turbulence inside the module, the design prevents air pockets and maintains uninterrupted flow even under heavy acceleration or extended highway runs. This in tank approach also reduces the risk of pressure drop when ambient heat rises in the rear chassis area. As a result, fuel delivery remains constant in all driving conditions for LS and LT installations.
Precision Fitment for 1981 through 1988 Cutlass Chassis
Engineered to fit the 1981 through 1988 Oldsmobile Cutlass frame without modification, every element follows the original fuel line routing and mounting geometry. CAD guided forming ensures the filler neck aligns precisely with the stock inlet and vents clear the stock body panel. Steel tank straps are sized to match OE thickness and tie plate locations, preserving undercarriage ground clearance. That exact fit avoids clearance issues and allows installers to maintain the chassis integrity of classic Cutlass sheet metal. Technicians can rely on the accuracy of the package to speed up swap projects.
Comprehensive Hardware Package for Streamlined Assembly
All necessary hardware comes in one kit to simplify assembly and prevent delays due to missing parts. Included items such as the sending unit calibrated for EFI accuracy, steel tank straps, custom filler neck, vent filter, molded gaskets, and fasteners are selected for compatibility and durability. Builders benefit from having every component on hand, reducing trips to suppliers and cutting labor time. This comprehensive set up helps maintain project momentum from start to finish on LS and LT conversion work.
Engineered for steady performance under every driving condition. For a smaller capacity fuel pump kit at 255 LPH see our 1981-1988 Olds Cutlass EFI Fuel Tank Kit - 255 LPH Pump.