Transmissions & Drivetrain

Circle D HP Series LS 4L80 300mm Torque Converter 2200-2400 Stall Speed Great performance torque converter for a daily driven car or truck. This torque converter will have excellent street manners and only flash high when you want it.  *ONLY...

Circle D HP Series LS 4L80 300mm Torque Converter 1800-2000 Stall Speed Great performance torque converter for a daily driven car or truck. This torque converter will have excellent street manners and only flash high when you want it.  *ONLY...

Circle D HP Series LS 4L80 310mm Torque Converter   This unit is great for the HD trucks equipped with the 4l80 transmission. It tows well and will work with a mild camshaft and bolt ons. Available in 1600-2400 stall. Billet Front...

Circle D Pro Series LS 4L80 265mm Torque Converter  Pro Series Billet Torque Converter Converter Diameter - 265mm - 10 1/2" Available in stall speeds from 2500 - 3400 rpm Furnace Brazed  Hand TIG Welded  Torrington...

Circle D HP Series LS 4L80 300mm Torque Converter  Great performance torque converter for a daily driven car or truck. This torque converter will have excellent street manners and only flash high when you want it.  *ONLY fits the dished...

FiTech Go Shift Transmission Controller for GM 4L60/65/80/85E & Ford 4R70W, AODE FiTech Fuel Injection is introducing the all new Go EFI GO SHIFT Trans Control. If you plan on upgrading your transmission and you’ re having trouble with the...

PCS GM 6L80/6L90 Transmission Control Module TCM-2650 This TCM is designed for retro-fitting the GM 6L80/90in applications that DO NOT have the means to control the transmission. Works great for LS swaps that are using aftermarket stand alone EFI...

MSD Atomic Transmission Controller 2760 MSD Stand Alone 4-Speed Automatic Electronic Transmission Controller. Take the mystery out of programming your transmission with this easy to use transmission controller. It allows adjustments such as...