LS and LT EFI Fuel Tank Kit for 1970-1972 Oldsmobile Cutlass A-Body
Tackling a LS or LT engine swap in a 1970 to 1972 Cutlass A Body chassis begins with ensuring stable fuel delivery under cornering and acceleration. This EFI fuel tank kit employs an internal baffle network and a 400 LPH Walbro in tank pump to keep pressure consistent in builds north of 550 horsepower. By matching the original frame rails, the shell preserves ground clearance and requires no modifications, while included straps, gaskets and fill neck hardware streamline installation beneath the bodyshell. Clear instructions and a pressure tested steel design complete a turnkey package that resists slosh and leaks for reliable service on street or track.
Precision Engineered Shell for Cutlass Frame Rails
The fuel tank shell follows the exact contours of 1970 through 1972 Cutlass A-Body frame rails, preserving original ground clearance and ride height without any cutting or welding. By matching factory mounting points for straps, gaskets and fasteners, installers avoid guesswork and trial fitting, securing the tank in minutes. This precise alignment also keeps exhaust pipes, brake lines and suspension links clear, maintaining the chassis integrity that is critical when integrating modern powerplants. Whether fitting an LS or LT engine, the tailored shell holds the unit firmly under the bodyshell while honoring the classic underbody silhouette.
Integrated Baffle Network Minimizes Fuel Slosh Under Load
An internal array of baffles divides the tank into multiple chambers, controlling fluid motion during hard cornering, acceleration or sudden stops. This layout keeps the pickup port submerged at all times, preventing fuel starvation and lean spikes in high output engines above 550 horsepower. By smoothing flow into the pump inlet, the design extends module life and maintains constant pressure under demanding conditions. The result is consistent throttle response and uninterrupted delivery, whether carving turns on a road course or navigating stop-and-go traffic in a hot rod.
400 LPH Walbro Fuel Pump for 550 Plus Horsepower Demands
At the core of the kit stands a 400 LPH Walbro unit chosen for its ability to support supercharged builds and high horsepower applications without pressure drop. The compact module resides entirely inside the steel shell, shielding components from debris and road spray while running more quietly than external pumps. Its built-in sending unit communicates accurately with factory fuel gauges, simplifying capacity monitoring during spirited drives. Combined with the sealed tank design, this pump delivers stable output at elevated RPM and ensures rapid system recovery after high load events.
Complete Kit for Streamlined Underbody Installation
This turnkey package includes the pump module, sending unit, filler neck, vent filter, precision-matched gaskets, hardware and straps-all crafted to Cutlass A-Body specifications. Clear, step-by-step instructions cover torque values, leak-proof sealing techniques and proper vent routing, eliminating the need to source extra parts. The pressure tested steel construction resists external impacts and maintains a reliable seal through repeated temperature and pressure cycles. Builders benefit from reduced downtime and a fully integrated solution that accelerates project completion, whether tackling a weekend swap or a professional restoration.
For lower flow demands choose our 1970-1972 Cutlass EFI Fuel Tank Kit - 255 LPH Pump as a smaller capacity fuel pump Kit at 255 LPH for reliable performance in diverse driving conditions.