340 LPH LS Fuel Pump and Fitting Kit for 1991-2005 GM Models
Whether you are upgrading a daily driver or tackling a performance build this 340 LPH Fuel Pump and Fitting Kit for 1991 through 2005 GM models fixes fuel pressure sag under aggressive throttle in LS conversions. Complete kit includes a tank mounted pump calibrated at 340 liters per hour plus factory spec fittings and reinforced hoses routed around brake lines and exhaust tubing. Installers will value precision machined connections that lock every junction to resist vibration and torque loads during spirited driving. Maintaining a continuous flow rate prevents lean conditions on street or track so injectors stay primed and throttle response remains sharp across the RPM band.
Custom Frame Rail Mount for 1967 to 1972 Chevy Trucks
The tank's frame rail mount is engineered to mirror the underside contours of 1967 through 1972 Chevy trucks, eliminating the need for trimming or aftermarket brackets. By matching factory chassis holes, precision formed reinforcement points allow the tank to secure with original fasteners, preserving frame integrity and ensuring an authentic fit. This design spreads load across a broad area to reduce vibration transmission, so the assembly remains rock solid even under aggressive throttle and rough roads. A protective coating applied to the steel surfaces guards against road debris and moisture, extending service life without adding unnecessary bulk. Installers benefit from simplified alignment and reduced labor time, while owners gain a seamless retrofit that looks and performs like a factory component.
EFI Style Internal Baffling for Stable Fuel Delivery
Internal baffling in this tank adopts a multi chamber layout inspired by factory EFI systems to control fuel movement during acceleration, braking and cornering. Each sealed compartment maintains a constant fuel head at the pump inlet, preventing air pockets that can cause hesitation or misfires under load. This arrangement also smooths out rapid level swings, reducing stress on the pump motor and extending electrical component life. As fuel flows evenly through the compartments, high output LS engines benefit from a continuous supply even in hard driving conditions. Technicians appreciate that no external surge tank is required, yet powered applications up to 550 horsepower enjoy the same level of protection against starvation.
Walbro 255 Liter Pump Performance and Ethanol Compatibility
At the heart of the system is a Walbro 255 liter per hour pump calibrated to support engines making up to 550 horsepower. Its robust impeller and motor design handle sustained high flow rates without overheating, ensuring consistent rail pressure at wide open throttle. The pump has been validated for use with modern ethanol blends, resisting swelling and maintaining critical clearances for reliable operation. Integration with pulse width modulation controls lets the unit modulate output in step with engine demand, cutting current draw at light loads and reducing pressure spikes during rapid throttle changes. This intelligent response not only enhances longevity but also delivers precise fuel delivery for spirited street driving and track use.
Accurate Sending Unit and Convenient Bed Fill Neck
The integrated sending unit employs a 0 to 90 ohm range to feed original gauge circuits without additional resistors or calibration, delivering factory level accuracy across the full tank sweep. Its float assembly is engineered to minimize hysteresis, so readings remain true even when the truck is parked on a slope or during slow fuel movement. Complementing this is a wide opening bed fill neck designed for splash free refueling, fitting into the original filler position for a clean appearance. By combining precise level tracking with fast, user friendly refueling, this system streamlines maintenance and reduces overfill risks. An eighteen gallon capacity also extends driving range, cutting downtime on long runs or heavy duty work cycles.
Engineered for precise fit and consistent pressure under every driving condition so your LS powertrain remains primed and responsive.