FTI 9.5in 4L80E/4L85E Billet Triple Disc Lock-Up Street Racer Series - LS - 3800 Stall

If you're building a high-performance LS engine for street or track use and need a torque converter that can handle serious power, this FTI Performance Street Racer Series converter is a solid choice. It's designed for 4L80E and 4L85E transmissions and offers a 3800 RPM stall speed, meaning the engine can rev up to that point before the converter fully locks and transfers power. This is crucial for getting the most out of your engine's power band during acceleration.

This converter is built tough with a computer-designed, CNC-machined billet front cover and a billet lockup piston. This construction helps prevent premature clutch wear, a common issue with less robust converters. FTI uses custom stator designs and multiple blade angle pumps to achieve specific stall speeds, and this particular unit is set up for a 3800 RPM stall. The fins are furnace-brazed and heli-welded for strength, and it features a severe-duty sprague and an anti-ballooning flanged impeller hub, making it incredibly durable for demanding applications. It fits a wide range of vehicles, including many Chevrolet and GMC trucks and SUVs, as well as some Bentley models.

When installing this torque converter, remember that it's a custom-built unit tailored to your specific needs and driving style. Ensure you follow the manufacturer's installation instructions carefully, paying attention to proper fluid levels and break-in procedures to get the best performance and longevity out of this converter.