340 LPH Fuel Pump Kit for LS Engine Swaps
When transplanting an LS engine into 1991 to 2005 GM chassis most stock fuel tanks cannot sustain the flow required by modern injection systems and ethanol blends. This 340 LPH Fuel Pump and Fitting Kit for GM platforms from 1991 through 2005 pairs a genuine Walbro 340 LPH pump with corrosion resistant anodized aluminum fittings sized to mate with factory hardlines or aftermarket rails without cutting or splicing. A low profile bracket secures the assembly at the tank outlet to shorten the fuel feed path under heavy throttle and maintain underbody clearance for exhaust and steering components. Installers will appreciate plug in harness ends and firm hose terminations that reduce wiring and plumbing time during LS engine swaps.
Robust Galvanized Steel Body with Powder Coat Surface
Galvanized steel offers a unique barrier against corrosion by applying a zinc coating that resists rust and damage from moisture or road salt. The additional powder coat surface in silver creates an even thicker shield, locking out contaminants that could compromise the metal over time. This dual layer finish also simplifies cleaning after off road use or extended storage in harsh climates. Together these treatments keep the tank structurally sound and preserve its capacity at eighteen gallons even after countless cycles of fuel fill and discharge. Vehicle owners benefit from a fuel tank that remains leak free and mechanically stable through years of service.
Internal Baffling Ensures Steady Fuel Delivery During Dynamic Driving
Fuel movement inside the tank can cause momentary drops in system pressure during sharp turns or sudden braking. Internally baffles break up these surges by limiting fuel slosh and keeping the pickup immersed at all times. This design is crucial for engines that demand consistent pump inlet pressure or risk cavitation that leads to starvation. By maintaining steady flow even under lateral g forces, the tank supports smooth acceleration and reliable throttle response. Drivers will notice fewer stumbling events and more predictable engine output on twisty roads or steep grades.
Walbro 400 LPH Pump Capacity for Engines up to Seven Hundred Fifty HP
At the heart of this system is a genuine Walbro pump rated for four hundred liters per hour, engineered to meet the needs of performance engines up to seven hundred fifty horsepower. Its internal mechanism uses precision gears to deliver a constant volume of fuel even at high rpm conditions. The reinforced composite housing stands up to modern ethanol blends and heat cycles, ensuring long term durability. With an eighteen gallon reservoir feeding the pump, there is ample liquidity to feed high demand without risk of vapor lock. This means tuners can rely on a stable flow curve during tuning sessions.
Integrated Zero to Ninety Ohm Sending Unit with Side Fill Neck
This tank integrates a sending unit engineered to operate on zero to ninety ohm circuits, matching factory gauge clusters without cutting into the dash harness. The calibrated sensor provides accurate level readings throughout the entire eighteen gallon range for foolproof fuel monitoring. A side fill neck adds further convenience by relocating the refueling port to an accessible side panel, reducing clearance issues in tight chassis layouts. The summed result is a tank that blends into stock interiors while delivering modern functional upgrades. Installation requires basic hand tools and reuses many original mounting brackets for a clean underbody appearance.
Engineered for consistent fuel delivery during demanding LS swaps this tank delivers reliable performance you can trust. For the same gas tank but with a smaller capacity pump at 255 LPH see our 1967-1972 Chevy Truck Frame Mount Gas Tank - Side Fill - 255 LPH Pump.