What is a 'stall speed' and why does 3800 RPM matter?

Stall speed is the engine RPM at which the torque converter fully couples and transfers engine power to the transmission. A 3800 RPM stall speed means the engine can rev up to that point before the converter locks up, allowing for a stronger launch from a standstill, especially beneficial for performance applications.

What makes this torque converter so durable?

This converter is built with a CNC-machined billet front cover and billet lockup piston, which are much stronger than cast aluminum. It also features furnace-brazed and heli-welded fins, a severe-duty sprague, and an anti-ballooning flanged impeller hub, making it exceptionally resistant to failure under high stress.

Is this torque converter custom-built for my application?

Yes, FTI Performance custom-builds these torque converters to your exact needs and driving style. They use custom stator designs and multiple blade angle pumps to achieve specific stall speeds and performance characteristics tailored to your vehicle.

FTI Torque Converter 9.5in Billet Triple Disc SRLT47082-3

Name: FTI 9.5in 4L80E/4L85E Billet Triple Disc Lock-Up Street Racer Series - LT - 3800 Hard Hit Stall
Brand: FTI Performance
Price: 1554.75 USD
Availability: InStock

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

$1554.75

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

FTI 9.5in 4L80E/4L85E Billet Triple Disc Lock-Up Street Racer Series - LT - 3800 Hard Hit Stall Torque Converter.

Key Features

Fits 74+ vehicle make/model combinations.
9.5-inch billet triple disc lock-up torque converter.
Designed for 4L80E and 4L85E transmissions.
Features a 3800 RPM 'hard hit' stall speed.
Includes a billet front cover and billet lockup piston to reduce clutch wear.
Furnace-brazed and heli-welded fins for extreme durability.

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Will this fit your vehicle?

Product Details

This FTI Performance torque converter is a robust upgrade for your 4L80E or 4L85E transmission. You get a 9.5-inch billet triple disc lock-up torque converter designed for demanding street and racing applications. It features a 3800 RPM stall speed, meaning the engine can rev up to that point before the torque converter fully engages and transfers power to the drivetrain. This specific model is built for 'hard hit' stalls, providing a strong launch when you need it most.

The construction here is seriously solid. FTI uses a computer-designed, CNC-machined billet front cover and a billet lockup piston, which greatly reduces clutch wear compared to less robust designs. The fins are furnace-brazed and heli-welded for extreme durability, and it includes a severe-duty sprague and an anti-ballooning flanged impeller hub. This converter is custom-built to match your specific vehicle and driving style, with stator designs and pump blade angles tailored for stalls ranging from 2,800 to 4,400 RPM. This level of customization ensures you get the performance you're looking for, whether for street driving or track use.

This torque converter fits a wide range of vehicles, including many Chevrolet and GMC trucks and SUVs from the 1990s and early 2000s, as well as select Bentley models. It's a substantial upgrade for anyone looking to improve their vehicle's launch characteristics and overall drivetrain strength.