RTS Serious Stall Converters RTS high stall torque converters are designed for serious-minded performance enthusiasts and offer additional strength and durability. The higher stall speeds of these converters will launch the car in a higher RPM range where more torque is readily available, resulting in quicker acceleration. They’re available for a variety of transmission makes and models. They are also available in a custom build model to suit any performance high horsepower application. Click here for more details on our custom built torque converters. Features Built using state-of-the-art tools & equipment Includes NEW components Welded internal hub Welded fins on turbine and impeller Welded pilot Flanged hub All critical surfaces are resurfaced by skilled craftsman Pressure tested to ensure a full and complete weld Electronically balanced for precision accuracy Made in the USA! Torque Converter Specs Stall: 2200-2500 Series: Stalker rated up to 550hp Transmission Type: LS 4L65E Size: 12.5" Turbine: 30 spline Bolt Circle: 11" Pilot Size: 1.703 Hub Style: Slotted Mount: 3 pads accept M10x1.5 bolts