LS and LT EFI Fuel Tank Kit for 1968-1969 A-Body Cutlass Skylark
This notched steel tank in the 1968-1969 Cutlass / Skylark EFI Fuel Tank Kit positions the 400 LPH pump inside the reservoir to clear rear suspension arms and exhaust without altering the factory floor. By matching the original well geometry the kit seats smoothly in the A Body frame and preserves ground clearance under heavy load. Shortened line runs at the tank outlet maintain steady pressure to the regulator and reduce potential vapor lock under high demand. Complete with straps, gaskets and fittings for LS and LT swaps the package lets builders finish plumbing and mounting in one sequence, reducing fitment guesswork and bypassing external bracket fabrication.
Precision Fit to A Body Frame
The notched steel tank mirrors the original well profile of 1968–1969 Cutlass and Skylark frames, so it slides into place without trimming sheet metal or adding brackets. By matching the factory floor pan contours, the design maintains clearance for rear suspension arms and exhaust pipes under full articulation. This precise fit reduces stress on mounting points and prevents contact wear that can lead to cracks or fuel leaks over time. Installers benefit from a drop-in alignment that holds steady during torque cycles and chassis flex, preserving ground clearance under heavy load and spirited driving.
In Reservoir Pump Cooling and Steady Fuel Flow
Housing the 400 LPH Walbro pump inside the reservoir leverages surrounding fuel as a heat sink, keeping the pump motor cooler than external modules. Shortened outlet lines to the regulator cut pressure losses and reduce the number of fittings, lowering the risk of vapor lock when engines operate at high demand or ambient temperatures climb. This configuration delivers consistent flow even during rapid throttle transitions, preventing fuel starvation in sustained high-rpm or hill-climb scenarios. Centralized routing also simplifies plumbing, allowing cleaner installation within A Body frame rails without custom mounts.
Kit Composition Simplifies Fuel System Assembly
This comprehensive package includes the in-tank pump module, sending unit, straps, filler neck, vent filter, gaskets and all required hardware to complete an EFI fuel system. Each component is pre-matched to factory openings and mounting points on the Cutlass and Skylark chassis, eliminating the need to source adapters or fabricate brackets. Precision-bent straps contour to the frame rails, while molded gaskets ensure leak-free seals at the filler neck and sending unit ports. The coordinated component set streamlines workflow, allowing technicians to follow a logical sequence and finish installation without tracking down extra parts.
Rugged Steel Structure with Corrosion Resistance
Constructed from heavy-gauge steel, the tank resists dents and deformation caused by road vibration and track impacts, ensuring reliable fuel storage across thousands of drive cycles. Reinforced weld beads along critical seams maintain structural integrity under repeated fill and drain events associated with high-output engines. A protective finish guards against moisture and ethanol blends, preventing rust and extending service life in street or track applications. This robust design supports LS and LT powerplants up to 550 hp, giving builders confidence in long-term durability.
Trust MuscleRods for precise fit and lasting performance. For a smaller capacity fuel pump Kit at 255 LPH see our 1968-1969 Cutlass 255 LPH pump Tank Kit (notched).