EFI Fuel Tank Kit for LS and LT Swaps in 1968-1969 Cutlass and Skylark A-Body
Swapping an LS or LT mill into a 1968 to 1969 Cutlass or Skylark A Body often reveals tight clearances around suspension arms and exhaust rails which this EFI fuel tank kit solves with its notched steel reservoir. By mirroring the original well profile the assembly slides into the factory pan without trimming sheet metal or altering ride height. Housing the 400 LPH Walbro pump inside the tank leverages surrounding fuel as a heat sink, keeping flow consistent under hard acceleration and high ambient temperatures. Complete with straps, gaskets and fittings for both LS and LT installations, it lets builders follow a single sequence to mount and plumb without custom brackets or extra parts.
Precision Notched Design for A Body Clearance
The notched steel tank is formed to mirror the factory well outline on 1968 to 1969 Oldsmobile Cutlass and Buick Skylark chassis, allowing it to seat flush in the frame without trimming the floor pan or adding brackets. By replicating the clearance pockets for rear suspension arms and exhaust pipes, this design preserves ground clearance and prevents interference under full articulation. Installers appreciate the drop in alignment that holds position under torque and chassis flex, protecting the edges of the steel from impact wear and fatigue. This level of fitment accuracy reduces installation time and eliminates the guesswork of custom modifications.
Integrated Pump Module for Consistent Delivery
Housing the 400 LPH Walbro pump inside the tank exploits the surrounding fuel as a natural coolant, reducing heat soak that can lead to vapor lock or flow drop under sustained high load. The shortened outlet routing to the regulator cuts fuel line length and fitting count, diminishing pressure losses and potential leak points. This arrangement yields a stable flow rate even during rapid throttle changes and long hill climbs, supporting supercharged and over 550 horsepower LS or LT engines. Placing the pump within the reservoir also keeps the assembly tucked inside the frame rails for a clean installation and protection from road debris.
Streamlined Kit Layout Simplifies EFI Assembly
This all in one package delivers every piece required to convert the A Body fuel system to EFI, including the in tank pump module, sending unit, straps, filler neck, vent filter, gaskets and hardware. Each part is pre matched to the Cutlass and Skylark frame openings, so technicians can follow a single mounting and plumbing sequence without sourcing extra brackets or adapters. The precision bent straps conform to the contours of the chassis rails, and molded gaskets ensure a seal that resists leaks over time. By unifying component fitment, this kit accelerates project schedules and reduces the risk of missing parts when time is tight.
Robust Steel Construction with Corrosion Protection
Constructed from heavy gauge steel, the tank resists dents and deformation from road vibration, track use and debris strikes, ensuring safe fuel containment under demanding conditions. Reinforced seam welds maintain the tank shape through repeated fill cycles and exposure to ethanol blends, while a protective finish shields the exterior surface from moisture and salt. Builders gain confidence in lasting service life even in street and track environments, as the material strength supports engines up to 550 plus horsepower. Routine inspection shows minimal wear on the mounting points and body panels, reflecting the rugged nature of the design.
This tank kit is built for consistent flow and long life. For a smaller capacity fuel pump kit at 255 LPH see our 1968-1969 Cutlass 255 LPH pump Tank Kit (notched).