340 LPH DIY In-Tank Fuel Pump Kit for LS and LT Engines
For high demand LS and LT swaps vulnerable to fuel starvation during aggressive acceleration or cornering the DIY in Tank Fuel Pump Kit 340 LPH secures constant flow by trapping fuel around the pump inlet. Featuring a CNC machined baffle and integrated fuel bladder this solution prevents air ingestion and maintains pressure in both EFI and carbureted systems. Installation is straightforward thanks to a dedicated drill guide and hanger lock ring that guarantee precise alignment while stainless steel and aluminum fittings resist corrosion over prolonged use.
Integrated Baffle with Fuel Bladder for Steady Pickup
The heart of this kit is a precision CNC machined baffle that works in concert with a flexible fuel bladder to maintain constant flow around the pump inlet. During aggressive acceleration, cornering, or sudden braking, fuel can slosh away from the pickup point and introduce air into the line. By trapping a reserve of fuel directly at the inlet, this system prevents lean spots and hesitation without the need for an external surge tank. The integrated bladder adapts to changing fuel levels and angles, ensuring uninterrupted delivery in both electronic fuel injection and carbureted setups.
340 LPH Output Designed for Engine Evolution
With a 340 liters per hour rating, this fuel pump supports stock LS and LT engines while providing ample headroom for future upgrades such as forced induction or higher duty injectors. The extra flow capacity helps maintain stable fuel pressure under peak loads, protecting against pressure drop at high RPM. Builders can pursue added horsepower without returning to the tank for a secondary pump, saving time and expense. This margin of performance makes the kit a reliable foundation for street machines and track focused builds alike.
Precision Fit Installation with Drill Guide and Lock Ring
Accurate placement of the pickup assembly is critical for leak free operation and optimal flow. The included drill guide aligns the mounting location perfectly before any cutting, avoiding offset holes that lead to vibration or leaks. Once the tank opening is prepared, the hanger assembly and lock ring lock the pump in place against the wall, creating a robust seal that resists loosening over time. Detailed instructions walk even first time installers through each step, making the retrofit process straightforward and repeatable.
Robust Construction with Corrosion Resistant Materials
All metal fittings are crafted from stainless steel and corrosion resistant aluminum alloys that withstand ethanol blends and modern fuel additives. High-grade polymer seals and hoses retain flexibility at elevated temperatures and resist chemical attack, preventing cracking or deformation. These material choices extend service intervals and minimize maintenance, offering long term reliability under daily driving and high stress track conditions. The result is a fuel assembly built to endure the demanding environment of performance swaps.
Count on MuscleRods for dependable performance under all conditions. For a smaller capacity fuel pump Kit at 200 LPH see our DIY in-Tank Fuel Pump Kit-200 LPH.