4L80 Pro Series 252mm Torque Converter

The Circle D 4L80 Pro Series 252mm torque converter is a high-performance upgrade for GM 4L80E automatic transmissions. Engineered for durability and adjustability, this converter is designed for high horsepower street and track applications, supporting over 800 HP. This torque converter features a 252mm diameter and a stock 4L80 bolt pattern with a 6x11.50 configuration. It is not a bolt-together upgrade. For enhanced compatibility with LS or Gen-V LT engines, an optional Circle D Specialties Billet Flexplate is available. The flexplate can be specified for different crank flange bolt patterns, including 6-bolt (LS or Gen-V LT) and 8-bolt (LS or Gen-V LT) configurations. Circle D Specialties offers various bolt pattern options to ensure proper fitment with different engine configurations, including Universal (3x10.75 & 3x11.06 & 3x11.50), 4L80 (6x11.50), LS Dual 6 Lug (6x11.06 & 6x11.50), LS 3 Lug (3x11.06), LT 3 Lug (3x10.75), LT 6 Lug (6x10.75), and LT/4L80 (3x10.75 & 3x11.50).