340 LPH LS Fuel Pump Kit with Fittings for 1991-2005 GM Models
When you fit an LS engine into a 1991 to 2005 GM chassis ensuring consistent fuel pressure from the stock tank is often the biggest hurdle. This 340 LPH pump and fitting kit provides precision matched adaptors that install in existing tank openings and support engines up to 550 horsepower without custom plumbing. Each CNC machined fitting seals leak free and maintains factory gauge electronics for accurate level and pressure feedback under load. Installation requires only standard hardware so you can complete the fuel system upgrade and return to powertrain tuning while preventing fuel phase separation during hard acceleration and braking for consistent injector performance.
Advanced Internal Baffling Ensures Steady Supply
The tank incorporates a multi chamber design that prevents fuel slosh and starvation under aggressive driving conditions. By routing fuel through internal baffles the kit maintains a reliable fuel column at the pump inlet during hard cornering or rapid deceleration. This steady supply prevents vapor lock and preserves consistent pressure for precise injector operation throughout the 0 to redline rpm range. For LS swap projects the baffling is critical to avoid lean pulses and preserve tuning stability during track or street use. Technicians will note reduced pump cycling noise as the system dampens sudden fluid shifts.
Walbro 255 LPH Pump and Sending Unit Calibration
Featuring a Walbro 255 liter per hour pump this assembly supports up to five hundred fifty horsepower without dropping pressure at wide open throttle. The included zero to thirty Ohm sending unit matches factory GM tank electronics for accurate level feedback so gauge readings remain within original tolerances. This EFI ready calibration eliminates guesswork by synchronizing pump output with stock circuit demands, ensuring the engine management system receives precise fuel mapping data. Coordinated performance between the pump and sensor simplifies tuning and reduces the need for aftermarket modules. Users benefit from reliable startup and stable idling under varying load and temperature conditions.
Underframe Mount and 18 Gallon Capacity Optimize Fit and Range
Designed for direct installation under rear frame rails this assembly secures neatly without custom brackets or body modifications on 1991 to 2005 GM models. The sturdy weld construction integrates the mounting flange at factory tank positions, offering a stable foundation that resists vibration and chassis flex. With an eighteen gallon capacity drivers gain extended cruising range and fewer fill stops between trips or track events. Its compact footprint balances volume and clearance to maintain ground travel height and protect against road debris. Installers will appreciate the simplified attachment procedure that reuses OE fasteners and standard tools.
Precision matched fittings and advanced baffling ensure consistent fuel pressure and accurate tank level feedback for your LS swap project.