EFI Fuel Tank Kit for LS Engine Swap in 1978-1980 Oldsmobile Cutlass
If you are tackling an LS swap in a 1978 to 1980 Oldsmobile Cutlass Notchback this fuel tank kit with 255 LPH Walbro pump addresses the stock system's limited flow and prevents fuel starvation under boost or load while supporting up to 550 horsepower. It retains the factory steel tank and secures to the original frame brackets without any cutting or welding so the underbody appearance remains intact. Precision machined vent filters and durable gaskets deliver a tight seal while the treated in tank module resists corrosion from additives and moisture. Servicing becomes easier thanks to a removable cover plate and quick disconnect fittings that reduce downtime during routine checks. A plug and play wiring harness and direct fit hardware remove alignment guess work and allow builders to concentrate on tuning rather than fabrication.
Durable Corrosion Resistant Tank Module
The in tank assembly combines the 255 LPH Walbro fuel pump, sending unit and prefilter in a housing treated to resist chemical additives and moisture. A corrosion resistant finish preserves component life in street driving and competition environments. Internal vibration control features shield pump wiring and seals from harmonic stresses that can cause premature failure. By integrating these elements into a single module, maintenance and replacement become simpler tasks for project builders. Removable cover plate and quick disconnect fittings allow for rapid access during service intervals.
Precision Sealing with Machined Vent Filters and Gaskets
Precision machined vent filters ensure accurate fuel vapor management by sealing tightly against the original filler neck contours. High quality gaskets maintain a leak free connection even under repeated filling and draining cycles. By matching factory mounting points, these components preserve underbody appearance while preventing dirt ingress and fuel evaporation. This level of fit also eliminates alignment guess work to secure a consistent seal from day one. This approach not only secures the seal but also supports emissions control by minimizing fuel vapor release under varied temperatures.
Reliable 255 LPH Pump Output for 550 HP LS Engines
The matched 255 LPH pump delivers consistent fuel flow to support LS engine power levels up to 550 hp without risk of starvation under boost or load. Steady pump output maintains stable pressure during rapid throttle transitions and sustained high speed operation. Combined with optimized venting, the system reduces air lock risk and prevents lean spots in the fuel curve. The pump's balanced rotor and motor design also reduce noise and heat build up for reliable operation during prolonged high demand. Drivers experience smoother acceleration and confidence that fuel demand will be met under all conditions.
Bolt In Installation for Seamless LS Swap
This kit secures directly to factory tank straps and frame brackets, eliminating the need for cutting, welding or custom spacers. A plug and play wiring harness removes splicing and ensures proper connections from the start. All required hardware, including straps, filler neck and mounting bolts, is provided in one package to streamline the build process. Installers benefit from a clear sequence that reduces downtime and allows focus on tuning rather than fabrication. The retention of the original steel tank preserves the classic look and ensures compatibility with factory inspection points.
Rely on this kit's durable design and for a Larger capacity fuel pump Kit at 400 LPH see our 1978-1980 Cutlass Notchback EFI Fuel Tank Kit - 400 LPH Pump.