The Tork Master 2400 fits 1984-93 GM 700R4/4L60 w/30 spline input, 1993-1996 4L60E w/30 spline input, and 1997-04 Corvette transmissions. This converter retains the lock-up feature. The Tork Master will provide noticeably quicker launches and harder acceleration while maintaining normal daily driving qualities.