Performance Torque Converter, Fits Compatible with GM 4L80E, 4L85E Trans. for Compatible with GM LS Eng., Stall Range: Stock, Dia.: 13.750 in., Spline: 35, Bolt Circle: 11.675 in., Crank Pilot: 1.703 in., Lock Up: Yes, Anti-Ballooning Plates: No, Balanced: Yes|JEGS Stock-Style Performance Torque Converter for Compatible with GM 4L80E, 4L85E Transmissions [Stock Stall Range]