4 Before we can install our Dynamic Racing Transmission C4, the provided 10-inch "street and strip" torque converter from its sister company, Torque Converter Techniques (TCT), needs to be seated onto the input shaft. If you've never installed a torque converter, it can be hard to "feel" the different steps the converter must be aligned with and slid past. A gentle rocking and twisting motion while pushing the converter inward usually gets the job done. Make sure the converter is fully seated before trying to bolt up the transmission. See more on TCT converters in the sidebar.