Launch With RTS Converter & Flexplate Packages and Save Package Includes: RTS Serious Stall Converter 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 RTS-FP753HD Premium Series Flexplate These RTS Black Premium Series Flexplate's are made for high performance street car drivetrains. RTS flexplate made specifically for our Holden Chevrolet LS and other popular performance cars. Each flexplate is dynamically balanced to eliminate potentially damaging vibrations and electro-coated black for protection from the elements. Fits most LS-series Gen III and Gen IV Chev Holden Commodore, 6.0, 6.2 and 7.0 litre V8 engines using a 6 bolt crankshaft flange. Drilled for 10.75" small GM converter bolt pattern and also 11.062" (281mm) LS style converter bolt pattern. Includes a converter pilot adapter that is needed if you are using a converter originally made to fit older small or big block Chevy (non-LS). Flexplate is .035" thicker than stock and the starter ring is welded to both sides of the flexplate for additional strength. Constructed from a high tensile strength material this flexplate resists elongation and cracking. Features Internal Balanced Engine Dual Pattern 10.75 & LS 11.06 Inch Bolt Pattern Convertor Mount Crank Pilot To Converter Adaptor Included Black Plated Finish 168 Tooth Ring Gear Street/Strip Applications Black Plated RTS Quality Note: Must use ARP 244-2901 Flexplate Bolts to clear inner crank ring