FTI 9.5in 4L80E/4L85E Billet Lock-Up Street Racer Series - LT - 4000 Hard Hit Stall

Starting with a CNC-machined billet front cover and a billet lockup piston, this FTI Performance torque converter is built to handle serious power. This is the Street Racer Series LT model, designed for 4L80E and 4L85E transmissions, and it's set up for a 4000 RPM stall speed, meaning it's engineered to let your engine rev up significantly before the converter fully engages the transmission. This is crucial for getting the most out of performance camshafts and other engine modifications that shift the powerband higher.

FTI builds these converters with a focus on longevity and performance. They use custom stator designs and multiple blade angle pumps to achieve specific stall speeds, like the 4000 RPM rating on this unit. The fins are furnace-brazed and heli-welded for extreme strength, and it features a severe-duty sprague clutch and an anti-ballooning flanged impeller hub. This combination makes the converter incredibly robust, capable of withstanding the harsh conditions of high-performance street driving and racing. It’s designed to be a virtually indestructible component for your drivetrain.

This torque converter fits a wide range of vehicles, including many Chevrolet and GMC trucks and SUVs from the 90s and early 2000s, as well as select Bentley models. Because it's custom-built to your specific needs and driving style, it's a solid choice for anyone looking to maximize their vehicle's performance with a 4L80E or 4L85E transmission. Remember to check the full fitment list to ensure it matches your application.