JEGS Torque Converter Fits GM 4L60E, 4L65E, 4L70E Trans.Stall Speed: 1,800-2,400 RPMDia.: 300mmSpline: 30Bolt Circle: 11.063 in.Crank Pilot: 1.703 in.Lock Up: YesAnti-Ballooning Plates: NoBalanced: Yes JEGS 555-60424 Torque Converter Features: Fits GM 4L60E, 4L65E, 4L70E Transmissions 1,800-2,400 RPM Stall Speed Hardened Chrome Moley Impeller Hub Torrington Style Incased Bearings Modified Heavy-Duty Stator NO � Anti-Balloon Plate Four Corner Tac Welded Fins or Furnace-Brazed 3 Welded Nuts with M10-1.5 Threads for Attaching Bolts to Torque Converter Leak and Pressure Tested Digitally BalancedJEGS 555-60424 Torque Converter Notes: All Stall RPMs will vary depending on the Engine Set-Up, VS Weight of the Vehicle, VS the Gear Ratio, and Tire Height Run Out