TCI has been building go-fast driveline parts for racers since 1968, and have produced millions of torque converters, transmissions and shift kits over the years. Identifying a TCI converter is a bit easier than identifying the average converter, primarily because TCI goes out of its way to make this process difficult; to complete the job, you are going to have to remove the converter from the vehicle, but it's all downhill from there.
Check the color of the torque converter. Black may be the most efficient color for dissipating heat from a torque converter, but TCI paints its converters with a metallic, gun-metal gray coating called "HDT." This shade of gray disperses heat almost as well as black, and makes TCI's converters instantly distinguishable from other brands.
Flip the converter over and look at its back -- the side facing the transmission. You'll find a manufacturer identification and code stamped into the housing. TCI stamps its brand name into the housing, which is a dead giveaway. If you don't see TCI stamped into the housing, then it's definitely made by a different company.
Look for the six-digit manufacturer code stamped on the other side of the housing from the TCI logo. This, combined with the four-digit code next to the logo, will provide you with enough information to call TCI and get the skinny on your converter.
