HP Series 278mm Torque Converter

The Circle D HP Series 278mm Torque Converter with Billet Cover is a high-performance upgrade designed for 6L80-equipped LS applications. It offers a balance of excellent drivability for daily use and the capability to support significant horsepower, making it suitable for a wide range of performance builds. This unit is rated by Circle D for applications up to 750 horsepower. Key specifications include a 278mm diameter with a billet cover, and a stall speed range of 3200–3400 RPM. Construction features include hand TIG welded assembly, a woven carbon lockup clutch lining, heavy-duty Torrington bearings, an exclusive CDS bearing retainer, and an anti-balloon plate. The build time for these custom units is typically 4–6 weeks as they are built to order. This torque converter is ideal for performance vehicles such as the 2010–2015 5th Gen Camaro SS, Pontiac G8, LS truck applications, and is also suitable for LS swaps and restomod projects. It is important to note that this converter DOES NOT FIT C6 transmissions. Circle D Specialties recommends contacting them to confirm compatibility with your specific vehicle and combination, as proper stall speed selection is critical for optimal performance and drivability.