Product Description
Circle D 4L60 245mm Pro Series LS Torque Converter – 3600–3800 RPM Stall
High-Performance Street / Strip Torque Converter for 4L60E, 4L65E & 4L70E Applications
The Circle D Pro Series 245mm Torque Converter is one of the highest-quality street/strip converters available for LS-powered vehicles running 4L60E, 4L65E, or 4L70E transmissions. Designed with a 3600–3800 RPM stall speed, this converter delivers aggressive launch characteristics while maintaining excellent drivability and durability for high-performance builds.
Built using premium materials and precision hand-assembly, this converter is ideal for cammed LS engines in F-bodies, trucks, SUVs, GTOs, and similar platforms. Featuring a billet front cover, billet piston, and reinforced internals, the Pro Series is engineered to handle serious power without compromising reliability.
*Does NOT fit Corvette applications*
Key Features & Benefits
- 3600–3800 RPM Stall Speed: Ideal for aggressive camshaft combinations and high-performance LS builds.
- 245mm (9.5”) Diameter: Compact design for improved efficiency and quicker response.
- Billet Front Cover & Billet Piston: Superior strength and durability under high load.
- Furnace Brazed Construction: Enhances structural integrity and longevity.
- Hand TIG Welded Fins & Turbine Hub: Ensures maximum durability and consistency.
- Torrington-Style Bearings & Deep Groove Ball Bearing: Reduces friction and improves efficiency.
- HD Impeller Hub: Eliminates common cracking issues found in lesser converters.
- Anti-Balloon Plate: Added protection for high-horsepower and high-torque applications.
- Single Disk Lockup: Maintains street manners while handling increased power.
- Hand-Assembled: Built to exacting tolerances for consistent performance.
Transmission Compatibility
- 4L60E
- 4L65E
- 4L70E
Important Notes
- Does NOT fit Corvette applications
- Torque converter sales are limited to the continental United States only
