1970-1972 Oldsmobile Cutlass A-Body LS EFI Fuel Tank Kit
When retrofitting an LS powerplant into a 1970 to 1972 A-Body Cutlass ensuring a stable fuel feed without trimming frame rails is essential and this EFI Fuel Tank Kit arrives complete with a 255 LPH Walbro pump in a tank shaped for direct installation. Its form follows original underbody contours to preserve factory rail clearances and integrates stainless steel lines plus a precision filler neck for alignment with custom body openings. An internal bypass valve and strainer guard against pressure dips under heavy load while all mounting hardware is included to ease assembly. Designed to support fuel demands of LS engines up to 550 horsepower it accommodates both returnless and traditional fuel systems in one comprehensive package.
Custom Underbody Matching for 1970 to 1972 Cutlass Frame Rail Integration
The fuel tank's shape follows the original underbody contour of the 1970 to 1972 Oldsmobile Cutlass A Body chassis, preserving clearance between the frame rails and suspension components without any trimming or notch work. By replicating the factory mounting pad geometry, the design allows direct installation and secure seating in the stock location. This precise form factor aligns with the original strap pockets and filler neck opening so no alignment adjustments are needed. Attention to detail also safeguards routing of brake lines and fuel return tubes by keeping them clear of suspension parts and heat sources. Installers will appreciate that the tank mounts firmly in place and resists sagging over time.
Engineering of 255 LPH Walbro Pump for Steady Fuel Pressure
The heart of this kit is a 255 LPH Walbro fuel pump engineered to support LS engines producing up to 550 horsepower without risking lean conditions. An internal bypass valve manages both returnless and traditional fuel rail setups, so pressure remains constant from idle through wide open throttle. An integrated strainer captures debris before it reaches the pump motor, reducing wear and preventing flow interruptions under heavy load. The pump's winding pattern is optimized to resist heat soak during extended operation and has been tested in both road and track conditions. Builders can trust that peak flow stays stable even after sustained high speed use.
Precision Filler Neck with Integrated Stainless Steel Lines
A precision formed filler neck mirrors the factory opening to eliminate the need for cutting or adapter welding when modifying sheet metal or fender wells. The included stainless steel lines mate directly to the tank outlets and are bent to exact radii, providing corrosion resistance and mechanical strength for custom routing under the chassis. This choice of material removes potential leak points by eliminating secondary fittings or hose adapters. Routing the steel lines beneath the vehicle is simplified by their consistent bend radii, ensuring smooth flow without kinks or stress points. In combination with a molded vent filter, the system maintains reliable venting and secure sealing for remote fuel setups.
All In One Fuel Kit Simplifies LS Swap Installation
This comprehensive kit arrives complete with the pump module, sending unit, filler neck, tank straps, gaskets, hardware and vent filter, covering every component needed for the fuel delivery portion of an LS conversion. Each part is matched to fit the 1970 to 1972 A Body Cutlass frame rails and body mounts, so builders can source all items in a single step and avoid delays. Clear instructions walk the installer through pump connections, vent line routing and strap placement for a fast and accurate assembly. By accommodating both returnless and traditional fuel rail preferences, the kit delivers system flexibility that adapts to different engine management setups. The result is a dependable EFI fuel system backed by USA manufacturing for consistent quality and durability.
Trust in dependable fuel delivery for your LS conversion. For a Larger capacity fuel pump Kit at 400 LPH see our 1970-1972 Cutlass EFI Fuel Tank Kit - 400 LPH Pump.