EFI Fuel Tank Kit with 255 LPH Pump for 1968-1970 Pontiac GTO/Lemans A-Body LS Swap
If your build calls for an LS engine in a 1968 through 1970 Pontiac GTO or Lemans the EFI Fuel Tank Kit simplifies fuel system integration by combining a closely profiled steel shell with a 255 LPH pump module. The notched lower shell clears exhaust tubing and suspension arcs to preserve tire travel and stock fuel capacity without any frame alterations. Inside the tank the submerged pump eliminates air pockets during cornering and hard acceleration maintaining steady flow up to 550 horsepower build requirements. Builders benefit from direct mounting to original A Body frame rails letting installation proceed without adapter plates or additional trimming.
Precision Contoured Shell for Exhaust and Suspension Clearance
When fitting an LS engine into the original A body chassis of a 1968 through 1970 Pontiac GTO or Lemans, clearance around exhaust tubing and rear suspension arcs becomes critical. This fuel tank features a precision contoured lower shell that is carefully profiled to match the path of factory exhaust and leaf springs without reducing tank capacity. By redirecting heat away from weld seams and preventing contact with moving components, the design limits stress on both the shell and surrounding structure under prolonged operation. Builders benefit from a nearly stock volume tank that preserves fuel range while avoiding any need to alter frame rails or fabricate custom brackets. The contouring process also maintains consistent distance to rear tires, ensuring full travel remains available for spirited driving. Extensive bench and on track testing confirmed that this shell geometry eliminates rubbing and fuel slosh without sacrificing strength or fit.
Immersed 255 LPH Pump Module for Stable Fuel Supply
This kit incorporates a fully immersed fuel pump module rated at 255 liters per hour to meet the demands of LS engines up to 550 horsepower. Submerging the pump inside the fuel reservoir ensures it is always primed, eliminating air pockets that cause cavitation and pressure drop during hard acceleration or cornering. The constant liquid environment also dissipates heat generated by the pump, reducing thermal stress and extending service intervals for fuel system maintenance. With consistent flow from idle through peak rpm, tuners can achieve reliable air fuel ratios under boost or natural aspiration. The assembly's integration into the shell prevents external exposure and simplifies wiring, so there is no need for an additional shield or relocation. This approach delivers repeatable performance in road course sessions and spirited street runs alike.
Drop-In Installation on 1968 through 1970 A Body Frame Rails
Aligning directly with factory mounting points, this fuel tank kit installs without the complications of trimming or adapter plates. The assembly drops into the stock location on A body frame rails and secures with original style straps, using included hardware for a secure fit. Builders simply connect the sending unit, attach the filler neck and install the vent filter with the supplied gaskets, streamlining plumbing and wiring tasks. Removing hours of mock up and measurement, the design ensures a leak tight seal from the first fitment attempt. With all necessary components provided, shops and enthusiasts can avoid last minute trips for parts and complete their LS swap more efficiently. Post installation pressure checks validate that the system holds steady under load without drips or leaks.
Design to Support Up to 550 Horsepower LS Engines
Engineered to accommodate builds up to 550 horsepower, this kit pairs the tank's volume with a flow capacity that prevents fuel starvation at wide open throttle. The dimensioning of the shell and pump selection offers plenty of headroom for future performance upgrades, whether adding boost or pursuing higher rpm targets. Consistent fuel pressure enables precise tuning and reduces the risk of lean spikes that could damage internal engine components. Tuners will appreciate the module’s ability to maintain steady delivery even during extended track sessions or aggressive street runs. This tank system provides a stable foundation for high output LS configurations, giving builders confidence that fuel demand will not outpace supply. It also supports repeatable dyno testing by holding pressure within narrow tolerances over multiple runs.
Count on precise fuel delivery in builds up to 550 hp and for a Larger capacity fuel pump Kit at 400 LPH see our 1968-1970 GTO 400 LPH pump Tank Kit (notched).