LT Series 6.6L L8T Direct-Fit Fuel Tank Assembly
When fitting a 6.6L L8T LT engine into your ride, ensuring a consistent fuel supply can make or break reliability and the LT Series 6.6L L8T Direct Fit Fuel Tank Assembly delivers that critical foundation. Built to match the stock frame mounts, this tank integrates a high capacity in tank pump module that resists vapor lock and maintains pressure under heavy acceleration. It also includes a sending unit calibrated to the original tank shape, providing accurate level readings even during cornering or hard braking. The welded steel construction resists corrosion and installs with factory geometry, so you can complete the swap confidently without custom modifications.
Pump Module Integration for Stable Fuel Delivery
This EFI tank kit features a fully sealed pump assembly located inside the tank, housing the Walbro unit, strainer and check valve in one compact module. By positioning the pump inside the fuel volume, heat soak is minimized and pressure fluctuations during throttle transitions are virtually eliminated. The integrated strainer shields the pump from debris without adding complexity to the plumbing, while the check valve maintains rail pressure during rapid throttle lifts. This unified approach replaces external return lines and ensures that every drop of fuel is delivered smoothly, even under sudden load changes or sustained high demand.
High Capacity Walbro Pump Enables Over 550 HP
At its heart, the kit deploys a 400 LPH Walbro pump engineered to support builds in excess of 550 horsepower with ease. Its placement in cool fuel reduces the risk of vapor lock compared to external units, preserving flow consistency under boost or heavy acceleration. With headroom for supercharged setups and high rpm operation, it delivers a steady stream of fuel during extended wide open throttle runs. This capacity margin prevents lean spikes and helps protect internal engine components when pushing power levels beyond factory norms.
Precision Sending Unit for Accurate Fuel Monitoring
The sending unit is custom shaped to match the original tank contour, guaranteeing accurate readings when cornering, braking or climbing hills. Modern EFI systems depend on precise level data for diagnostics and pump control, making reliable sensing critical to performance and safety. By maintaining consistent calibration throughout the fuel envelope, the unit prevents sudden run outs and unplanned stops on spirited drives or long highway stretches. Drivers gain confidence in gauge readings, knowing that the sender mirrors tank shape and movement at all times.
Complete Kit Designed for Vintage Chevy EFI Conversions
Every necessary component is included to streamline the swap process on 1949 to 1952 Chevy frames: tank straps, filler neck, vent filter, gaskets and hardware all preselected for direct fitment with factory mounts. This comprehensive package eliminates the hassle of sourcing individual adapters or fittings, reducing assembly time and potential leak points. The precision matched parts ensure proper sealing at the filler and vent lines, while the robust construction stands up to road vibration and fuel chemistry. Installers benefit from a unified solution that aligns with original chassis geometry, delivering a professional result on any vintage EFI conversion.
Backed by MuscleRods engineering, this assembly delivers steady fuel flow under every condition. For the same item but the 255 LPH pump tank kit which offers less horsepower, see our 1949-1952 Chevy EFI Fuel Tank Kit - Stock Capacity - 255 LPH Pump.