LS EFI Fuel Tank Kit for 1968-1969 A-Body Cutlass and Skylark
Swapping an LS engine into a classic 1968 or 1969 Oldsmobile Cutlass or Buick Skylark often reveals the stock tank cannot keep pace with demand at full throttle. This 1968-1969 Cutlass / Skylark EFI Fuel Tank Kit features a 255 LPH Walbro pump that fits directly into the original tank opening to sustain pressure under hard acceleration. By maintaining the outlet alignment with LS fuel lines the assembly cuts long hose runs and limits heat soak that leads to vapor lock. It arrives with seals wiring harness and mounting hardware to streamline installation and support consistent flow on both street and strip.
Precision Machined Module for Seamless Tank Integration
The custom module brings the fuel pump, sending unit, seals and vent filter together in one precision assembly that drops into the original tank opening of 1968 and 1969 Cutlass and Skylark models. Each mounting surface is machined to factory tolerances, ensuring gaskets seal perfectly without the need for shims or extra adapters. By positioning the pump outlet at the correct depth, fuel remains fully submerged under normal driving angles, which prevents cavitation and noise during hard cornering. This integrated approach streamlines installation and keeps the undercarriage free of clutter, while preserving accurate level readings for original gauges.
High Flow 255 LPH Pump Capacity for Sustained Engine Performance
At the heart of the kit is a 255 LPH Walbro pump engineered to support calibrations up to 550 horsepower with consistent delivery under rapid throttle changes. Its robust internal housing resists wear from continuous operation, while the smooth flow path reduces turbulence and heat generation inside the assembly. Maintaining stable pressure even during steep inclines or full throttle runs gives tuners a reliable foundation for refining ignition timing and injector pulse width. Drivers benefit from unwavering fuel delivery whether cruising on the highway or pushing their LS engine to its limits on track.
Optimized Fuel Line Routing to Minimize Heat Soak and Vapor Lock
The module's outlet is aligned to match LS EFI hose positions, enabling shorter runs that stay clear of hot exhaust manifolds and cylinder heads. This direct routing lowers fuel temperature by avoiding prolonged exposure to engine heat, which in turn prevents vapor formation and potential vapor lock. The vent filter also follows factory routing, maintaining proper tank pressure during rapid throttle transitions and preserving steady flow characteristics. Thoughtful hose angles and secure fittings reduce stress on lines and ensure consistent performance in both daily driving and spirited track sessions.
To upgrade to a larger capacity fuel pump Kit at 400 LPH, consider our 1968-1969 Cutlass / Skylark EFI Fuel Tank Kit - 400 LPH Pump which delivers consistent pressure under demanding conditions.