What is a torque converter stall speed and why does it matter?

Stall speed is the RPM at which the torque converter will 'lock up' or fully engage the engine's power to the transmission. A higher stall speed, like the 3800 RPM on this converter, is beneficial for modified engines that make peak power at higher RPMs, allowing them to launch harder.

What does 'lock-up' mean for a torque converter?

A lock-up torque converter has a clutch that mechanically connects the engine to the transmission at cruising speeds. This reduces slippage, improving fuel efficiency and lowering transmission temperatures compared to non-lock-up converters.

What is the benefit of a triple disc converter?

A triple disc setup offers more surface area for engagement compared to single or dual disc converters. This means it can handle more torque, engage more smoothly, and potentially last longer under demanding conditions.

FTI Performance Triple Disc Torque Converter SRLT6391-3

Name: FTI 9.5in 700R4/Early 4L60 Triple Disc Lock-Up Street Racer Series - LT - 30 Spline - 3800 Stall
Brand: FTI Performance
Price: 1554.75 USD
Availability: InStock

FTI 9.5in 700R4/Early 4L60 Triple Disc Lock-Up Street Racer Series - LT - 30 Spline - 3800 Stall

$1554.75

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

FTI 9.5in Triple Disc Lock-Up Street Racer torque converter for 700R4/early 4L60 transmissions. Features a 3800 stall and 30 spline input.

Key Features

Fits 700R4 and early 4L60 transmissions.
9.5-inch diameter Street Racer Series torque converter.
Triple disc lock-up design for improved performance and efficiency.
Features a 3800 RPM stall speed.
30 spline input shaft.
Constructed with a billet cover for increased strength.

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Product Details

FTI Performance is known for building strong drivetrain components that hold up to serious use. This 9.5-inch Street Racer Series torque converter is a prime example, designed for 700R4 and early 4L60 transmissions. It's built for drivers who want improved performance and reliability, whether for track days or spirited street driving. This converter features a triple disc setup, a lock-up mechanism for better efficiency on the highway, and a 3800 RPM stall speed, making it a solid choice for modified vehicles.

The construction here is well-built, starting with a solid billet cover that offers more strength than stamped steel. Inside, you'll find furnace-brazed fins for durability and TIG welded seams for a strong, leak-free unit. It also uses triple Torrington bearings, which help reduce friction and wear, especially under high load conditions. The 30-spline input ensures it mates correctly with your transmission's input shaft. This converter is intended for vehicles that have seen performance upgrades and demand more from their torque converter.

This converter fits a wide range of vehicles, including popular models like the Chevrolet Camaro, Corvette, and C1500 trucks, as well as some Buick and Cadillac applications. It’s important to note that this part is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper setup and any specific hardware requirements.