

Specifications
- Brand
- FTI Performance
- Part #
- SRLS6391
- UPC
- 887753823281

FTI 9.5in 4L60E/4L65E/4L70E Billet Lock-Up Street Racer Series - LS - 3800 Stall
$1195.71
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FTI 9.5in Billet Lock-Up torque converter for 4L60E/4L65E/4L70E LS engines with a 3800 stall. Built for performance and reliability.
Key Features
- Fits 4L60E, 4L65E, and 4L70E transmissions with LS engines.
- Features a 9.5-inch billet cover for improved strength and durability.
- Offers a 3800 RPM stall speed, ideal for performance applications.
- Utilizes furnace brazing for strong internal connections.
- Includes TIG welding for robust and reliable seams.
- Equipped with triple Torrington bearings for smooth operation and load handling.
Product Details
Starting with a solid billet cover, this FTI Performance Street Racer Series torque converter is built for serious performance. It's designed for GM's 4L60E, 4L65E, and 4L70E transmissions, specifically for LS engines, and offers a 3800 RPM stall speed. This means it's engineered to let your engine rev up to around 3800 RPM before the torque converter fully couples, which is ideal for getting off the line quickly with modified engines or for drag racing applications.
The construction here is all about durability and efficiency. It features furnace brazing for strong internal component connections and TIG welding for robust seams, ensuring it can handle the extra stress of higher horsepower and torque. Inside, you'll find triple Torrington bearings, which are known for their smooth operation and ability to handle significant loads, contributing to the converter's overall reliability and longevity. This isn't just a basic replacement; it's a well-built component aimed at improving your vehicle's acceleration and performance.
This torque converter fits a wide range of GM vehicles, including models like the Chevrolet Camaro, Pontiac Firebird, Cadillac Escalade, and GMC Sierra. It's a popular choice for enthusiasts looking to get more out of their LS-powered vehicles. While it offers a significant performance boost, remember that it's designed for off-road or competition use and is not CARB approved, so it cannot be shipped to California.
Specifications
- Brand
- FTI Performance
- Manufacturer Part #
- SRLS6391
- UPC
- 887753823281
Frequently Asked Questions
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FTI 9.5in 4L60E/4L65E/4L70E Billet Lock-Up Street Racer Series - LS - 3800 Stall


