1973-1991 Chevy Blazer/Suburban and GMC Jimmy LS Fuel Tank Kit with 255 LPH Pump
Placing an LS powerplant into a classic Chevy Blazer, Suburban or GMC Jimmy demands steady fuel flow to keep the engine operating smoothly and this kit delivers exactly that. Built to fit models from 1973 through 1991, the assembly includes a 255 LPH pump and sending unit installed in a reinforced steel tank that drops straight into factory mounting points with no fabrication required. With capacity to support engines up to 550 hp and maintain precise pressure under heavy throttle transitions, it guards against lean conditions and optimizes EFI control from idle through peak rpm. The complete package also carries a vent filter and all mounting hardware so installers can finish the swap cleanly and quickly.
Precision Fuel Delivery for Engines up to 550 hp
The core of this kit is a 255 LPH pump calibrated to support powerplants generating up to 550 hp, so fuel flow never becomes a limiting factor under heavy load. By maintaining consistent volume and pressure during rapid throttle transitions, it prevents lean conditions that can damage valve train components or lead to ECU error codes. This even flow is critical for electronic fuel injection systems, which rely on stable supply to optimize air fuel ratios across the entire rpm band. Careful engineering of the pump output curve ensures drivers experience smooth throttle response at low engine speeds and unwavering support at redline. In both daily driving and spirited acceleration, the assembly delivers the precise fuel delivery modern LS swaps demand.
Custom Underbody Fit for Classic Chevy Models
This fuel tank kit is shaped to align perfectly with the frame rails and mounting bosses of 1973 through 1991 Blazer, Suburban and Jimmy models, eliminating any need for cutting or fabrication. The filler neck hardware and tank straps bolt directly to factory points, preserving the vehicle's original geometry and ground clearance. The sending unit is calibrated to work seamlessly with stock dash gauges and warning lamps, so fuel level readings remain accurate without modifying electrical circuits. By mirroring the stock mounting envelope, this design keeps installation time to a minimum while ensuring the assembly sits quietly beneath the rear cargo floor. Installers benefit from a plug and play solution that respects the classic underbody layout of these vintage SUVs.
All in One Fuel Module Simplifies EFI Conversion
This package brings together the in-tank pump module, sending unit, vent filter, gaskets and all mounting hardware into one cohesive kit. The integrated vent filter prevents vapor lock and captures debris, protecting sensitive injectors from clogging under high temperature conditions. All necessary gaskets and fasteners are included to ensure a leak free seal between tank, neck and module, reducing potential troubleshooting down the road. By unifying these components into a single assembly, installers avoid part mismatch and wiring surprises, speeding up conversion projects. Whether you're upgrading a project truck or restoring a daily driver, the streamlined process removes guesswork and cuts labor hours.
Reinforced Steel Tank Ensures Enduring Reliability
Constructed from reinforced steel, the tank resists deformation and impact damage that can occur on rough roads or off road adventures. Its rugged build stands up to repeated stress from suspension articulation and weight shifts, protecting the pump module and internal components. The steel walls provide effective shielding from road debris and corrosion, ensuring consistent performance year after year. Built-in baffling prevents fuel surge during hard cornering or sudden braking, so the pump remains submerged and free of air pockets. Together, these features deliver a robust fuel reservoir that maintains precise pressure and flow regardless of driving conditions.
This kit delivers reliable LS fuel support; for a larger capacity fuel pump Kit at 400 LPH see our 1973-1991 Blazer/Suburban 400 LPH pump Tank Kit.