It is a "TV" (throttle valve) cable, NOT simply a kickdown cable, like the older THM-350's had. Not only is the adjusted length important, the "geometry" of the lever on the carburetor is critical... it's effective length, and it's angular position the the TV cable. Since you have changed out the carburetor and the intake, the correct geometrical relationship of the linkage may no longer exist. Some years ago, Car Craft had a good short article on how to make this all work. I lost the link in a computer crash, perhaps someone else has it. If you don't get it right, the transmission line pressure won't build up as needed, with the increased torque, as the gas pedal is mashed down, and the tranny clutches will go up in smoke. Hopefully, someone can point you to the diagram I am referring to, or something similar, so you can verify your setup is correct, or you can correct it as needed.
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