LS and LT Compatible EFI Fuel Tank Kit for 1970-1972 Oldsmobile Cutlass
Fitting an LS or LT powerplant into a 1970 to 1972 Cutlass A body chassis demands a fuel system that resists starvation during spirited cornering or heavy acceleration. Designed for direct underbody integration, this EFI tank kit houses a baffled interior and a 400 LPH pump that maintains consistent pressure for setups north of 550 horsepower. Its contours match factory frame rails to preserve original ground clearance and avoid any cutting or welding. Complete hardware including straps, gaskets, fill neck and clear instructions guide installers through each step for a reliable seal and efficient assembly while the pressure tested design resists leaks during sustained high load operation.
Direct Frame Rail Matching for Original Ground Clearance
The tank shell precisely follows the frame rails of the 1970 to 1972 Cutlass A body to preserve the factory undercarriage profile and maintain stock ride height. By eliminating any trimming or welding, installers can secure the unit without altering the chassis, which not only saves time but also retains structural integrity. This exact alignment ensures that exhaust components, brake lines and suspension linkages remain clear of the tank under full articulation. Supplied straps, gaskets and fasteners line up with OE mounting holes so the system nests exactly where the original fuel tank sat. In practice, this means preserving factory clearances while accommodating modern engine demands, whether the setup is for street cruising or occasional track use.
Baffled Interior Network to Prevent Fuel Starvation
An internal chamber design breaks the tank volume into isolated zones that drastically limit slosh during hard cornering, acceleration or sudden braking. This layout keeps the pickup port submerged at all times, avoiding interruptions in supply that can produce lean spikes during high load events. Consistent fuel delivery supports precise injector metering, which is vital for engines tuned north of 550 horsepower and for setups running forced induction. By controlling fluid motion, the baffle network also reduces turbulence around the pump inlet, helping preserve the module and maintain stable pressure under all operating angles. The outcome is a reliable air fuel ratio that delivers crisp throttle response and prevents damage from dry runs.
Comprehensive Kit with All Components for Simplified Installation
This package includes every part needed to complete the fuel system upgrade without sourcing additional items or delaying the project. Tank straps, filler neck, vent filter and precision-matched gaskets are all tailored to the Cutlass body to ensure a fast, straightforward assembly. Clear step-by-step instructions guide installers through torque settings and leak-proofing techniques for a secure seal that resists vibration and pressure cycles. The heart of the kit, a 400 LPH in-tank pump module, delivers the flow required for boosted or naturally aspirated LS and LT engines exceeding 550 horsepower. With all hardware and fittings on hand, this solution removes guesswork, minimizes fitment issues and accelerates completion of a seamless underbody integration.
This kit delivers a precise underbody fit and maintains reliable performance under load. For a Smaller capacity fuel pump Kit at 255 LPH see our 1970-1972 Cutlass EFI Fuel Tank Kit - 255 LPH Pump.