FTI 9.5in 4L80E/4L85E Billet Triple Disc Lock-Up Street Racer Series - LT - 3000 Stall

If you're building a high-performance street machine or a dedicated race car that uses a 4L80E or 4L85E transmission, a robust torque converter is crucial. This FTI Performance Street Racer Series torque converter is designed to handle serious power and deliver consistent performance. It features a 9.5-inch diameter and a 3000 RPM stall speed, making it a popular choice for LS-based engine swaps and modified trucks or SUVs that need improved acceleration off the line.

What sets this converter apart is its construction. The front cover and lock-up piston are CNC-machined from billet aluminum, which drastically improves durability and prevents premature clutch wear, a common issue with lesser converters under high stress. FTI uses custom stator designs and multiple blade angles in their pumps to achieve the specific stall speeds like the 3000 RPM rating on this unit, tailored to your engine's power band and driving style. For extreme reliability, the fins are furnace-brazed and heli-welded, and it includes a severe-duty sprague and an anti-ballooning flanged impeller hub, making it exceptionally resistant to failure even under demanding conditions.

This torque converter is built to be tough and perform reliably for a wide range of vehicles, including many Chevrolet and GMC trucks and SUVs from the 90s and early 2000s, as well as some Bentley models. It's a significant upgrade for anyone looking to maximize their vehicle's acceleration and ensure their drivetrain can handle increased horsepower and torque. Remember to consult your transmission builder or FTI Performance for specific recommendations regarding your build to ensure optimal performance and longevity.