Street Performance Torque ConverterGM 4L60E, 4L65E, 4L70E Trans.Stall Range: 2,800-3,200 RPMDia.: 300mmSpline: 30Bolt Circle: 11.063 in.Crank Pilot: 1.703 in.Lock Up: YesAnti-Ballooning Plates: NoBalanced: Yes JEGS 555-60426 Street Performance Torque Converter Features: Fits GM 4L60E, 4L65E, 4L70E Transmissions 300mm for LS type Engines For the 2 step input shaft � 1998 & Up 2,800-3,200 RPM Stall Speed Great Driving Characteristics Hardened Chrome Moley Impeller Hub Torrington Style Incased Bearings Modified Heavy-Duty Stator Extreme Duty Lock Up 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 & Pressure Tested Digitally BalancedJEGS 555-60426 Street Performance Torque Converter Notes: All Stall RPMs will vary Depending on Engine Set-Up VS Weight of the Vehicle VS The Gear Ratio and Tire Height Run Out For use with Grade-8 hardware only Use Blue Loctite on Torque Converter Bolts Use Type F transmission Fluid for Best Results Additional Transmission Cooler is Recommendede