1968-1970 Pontiac GTO/Lemans A-Body EFI Fuel Tank Kit for LS and LT Engines
Swapping an LS or LT engine into a 1968 to 1970 Pontiac GTO or Lemans A Body chassis demands consistent fuel supply, and the 1968-1970 GTO / Lemans EFI Fuel Tank Kit - 400 LPH Pump meets that need by placing a 400 LPH Walbro pump inside the factory reservoir. It preserves every original seal surface and bracket location for a tool free installation without cutting or welding, and immersion cooling prevents vapor lock under sustained throttle and ethanol blends. The kit includes filler neck, tank straps, gaskets, vent filter and hardware, while the integrated sending unit delivers precise level readings on spirited runs. Compatible with LS and LT conversions, this Fuel Tank Kit supports supercharged or above 550 hp applications with reliable, stable flow throughout every drive.
Overview
The 1968-1970 GTO/Lemans EFI Fuel Tank Kit with 400 LPH pump is engineered to modernize classic Pontiac restomods while preserving original body lines. The included Walbro unit delivers consistent flow up to 400 liters per hour, supporting engines that are supercharged or exceed 550 horsepower. This ensures stable fuel pressure across all RPM ranges, a critical factor for high-output LT and LS conversions. By maintaining a constant fuel supply, the system prevents lean conditions under load, safeguarding engine components and optimizing performance on both street and strip applications.
Installation & Compatibility
Designed for a tool free installation, this kit requires no welding or specialty tools. It integrates directly with MuscleRods mounts to guarantee correct engine placement and drivetrain angles, eliminating guesswork and alignment issues. The precision machined mounting ring seats in the original tank location and secures with factory hardware, preserving the vehicle's structural integrity and appearance. Whether installing a Gen III V8 or swapping to Gen V architecture, the kit's tank housing and pump assembly adapt without frame modifications, reducing shop time and onset of installation errors.
Fuel Delivery & Monitoring
An integrated sending unit delivers accurate fuel level readings to the factory gauge cluster or aftermarket display, ensuring drivers maintain awareness of remaining range. The sealed design minimizes vapor leaks and resists corrosion in aggressive fuel blends. Inside, the low profile pump assembly rides in a baffled chamber that limits fuel slosh during cornering or hard acceleration. This design promotes consistent suction, preventing starvation under high lateral G forces and delivering reliable volume even in drag launches or track turns.
To complete your Smaller capacity fuel pump Kit at 255 LPH, consider our 1968-1970 GTO / Lemans EFI Fuel Tank Kit - 255 LPH Pump, fully compatible with LS and LT conversions.