1973-1991 Chevy Blazer/Suburban and GMC Jimmy LS Fuel Tank Kit with 255 LPH Pump
When you fit an LS engine into a 1973 through 1991 Chevy Blazer, Suburban or GMC Jimmy, ensuring uninterrupted fuel flow becomes a central concern and this kit delivers with a calibrated 255 LPH pump. Built around a reinforced steel tank that drops into original mounting points, it preserves geometry and ground clearance on rugged terrain. Installers will appreciate that the sending unit, vent filter and all necessary hardware are included so EFI conversions proceed without guesswork. With capacity to support engines up to 550 hp and maintain precise pressure during rapid throttle transitions, this assembly prevents lean conditions and guards against ECU error codes in spirited driving.
Engine Support from 255 LPH Walbro Pump
The high-flow 255 LPH Walbro pump sits at the center of this kit, providing enough volume and pressure to sustain LS engines making up to 550 hp without strain. By delivering a consistent fuel stream during rapid throttle changes, it prevents the lean spikes that can harm valve train components or trigger ECU fault codes. Electronic fuel injection systems demand exact air-fuel ratios across idle, midrange and redline, and this pump's calibrated output curve meets those requirements in daily driving as well as spirited runs. Precision engineering ensures smooth response at low revs and unwavering support under full load, giving swap projects reliable performance from startup to wide-open throttle.
Custom Underbody Mounting for Classic Chevy SUVs
Designed specifically for 1973–1991 Blazer, Suburban and GMC Jimmy frames, the tank's contours follow the factory mounting bosses and frame rails to preserve original ride height and ground clearance. Installers simply slip the unit into the stock location, bolt on the filler neck and secure the straps without cutting, welding or modification. A sending unit calibrated to factory gauge circuits keeps fuel level readings accurate, avoiding dashboard rewiring or adapter harnesses. By mirroring the vintage underbody architecture, this solution minimizes installation time, protects chassis integrity and maintains the vehicle's heritage appearance.
Integrated Fuel Module for Streamlined Installation
This comprehensive assembly brings together the in-tank pump module, sending unit, vent filter, gaskets and hardware in one coordinated package. The built-in vent filter keeps vapor lock at bay and traps debris before it reaches injectors, safeguarding engine health under high-temperature conditions. Supplied gaskets and fasteners insure a leak-free seal between the tank, filler neck and module, eliminating troubleshooting steps later on. By combining these elements into a single unit, installers avoid part mismatches and long searches for compatible fittings, shaving hours off the swap process and ensuring a clean, dependable installation.
Reinforced Steel Tank for Reliable Operation
Constructed from heavy-gauge steel, this tank resists deformation from road impacts, suspension travel and cargo weight shifts, shielding internal components from damage. Its rugged walls fend off corrosion and debris strikes during on-road or off-road excursions, so performance remains consistent over years of use. Internal baffling curtails fuel surge during cornering or sudden stops, keeping the pump submerged and reducing air entrapment that can lead to pressure dips. Together, these design choices deliver a durable reservoir that upholds stable fuel delivery in every driving scenario.
Built for reliable operation on LS engines, trust MuscleRods for consistent performance. For a larger capacity fuel pump Kit at 400 LPH see our 1973-1991 Blazer/Suburban 400 LPH pump Tank Kit.