1973-1991 Chevy Blazer/Suburban/GMC Jimmy LS Fuel Tank Kit with 255 LPH Pump
When swapping an LS powerplant into a 1973 to 1991 Chevy Blazer, Suburban or GMC Jimmy, the original fuel tank setup can struggle to maintain pressure under spirited throttle transitions and sustained loads. The 1973 to 1991 Blazer/Suburban Fuel Tank Kit with 255 LPH pump brings a custom steel reservoir that bolts into existing frame bosses to preserve factory ride height and ground clearance. It supports flow demands for engines approaching 550 hp and prevents lean spikes with its matched vent filter and sending unit. Installers will appreciate the all-in-one package that installs without cutting or welding and delivers consistent EFI operation from idle to full throttle.
Custom Frame Integration for Blazer and Suburban Models
The fuel tank kit is engineered to mate precisely with the factory frame bosses on classic Blazer and Suburban chassis, preserving both ride height and underside clearance. By using the original mounting points, installers avoid any need to alter steel rails or adjust suspension geometry, which keeps handling characteristics true to the intended design. The sending unit is calibrated to match the factory gauge circuit, so drivers enjoy accurate fuel level readings without modifying dash wiring or adding warning lights. Aligning the reservoir in the stock location also maintains the visual profile of the vehicle floorpan, ensuring a clean appearance beneath the body. This precise fitment approach streamlines installation and safeguards frame integrity for decades of service.
Consistent Fuel Pressure with 255 LPH Walbro Pump
At the core of this assembly lies a 255 LPH Walbro pump capable of supporting engine outputs up to 550 horsepower while maintaining a stable output curve under varying load conditions. Its flow characteristics are chosen to supply modern fuel injection systems with a steady volume that prevents lean conditions during aggressive throttle transitions or sustained high rpm operation. Maintaining constant line pressure is essential for preserving injector spray patterns and protecting internal engine components from detonation precursors. Drivers will notice smooth throttle response at low speeds and unwavering fuel delivery when accelerating hard on pavement or trail. By matching pump performance to LS engine demands, the kit delivers reliable operation under both daily driving and spirited excursions.
Streamlined Module Assembly Reducing Installation Time
Rather than sourcing individual components, this package integrates the pump, sending unit, vent filter, gaskets and hardware into a single ready-to-install module. Having all necessary parts in one box eliminates compatibility concerns and saves critical hours that would otherwise be spent tracking down matched seals or adapters. The vent filter is positioned to trap vapors and debris before they enter fuel lines, reducing the chance of injector clogging and rough idling in hot environments. Preassembled wiring pigtails and mounting fasteners ensure a leak free seal at the filler neck and module flange, delivering a professional result without extra fabrication. Installers benefit from a neat underbody setup that replicates factory standards and avoids costly rework.
Robust Steel Reservoir Design with Internal Baffles
Constructed from heavy gauge steel, the tank resists impact damage from road debris, differential movement or cargo weight shifts, ensuring that the internal components remain protected. Strategic baffle placement inside the reservoir counteracts fuel surge during cornering or sudden braking, keeping the pump inlet submerged and preventing air ingestion that can lead to engine hesitation. The steel walls are treated to withstand corrosion from moisture and ethanol blends, extending service life even in harsh climates. By stabilizing fuel motion, this design helps maintain constant pickup, which is critical for high demand LS engines drawing large volumes at wide open throttle. The result is confidence in consistent engine performance mile after mile with no surprise pressure drops.
Count on consistent EFI pressure and smooth throttle response; for a Larger capacity fuel pump Kit at 400 LPH see our 1973-1991 Blazer/Suburban 400 LPH pump Tank Kit.