The previous trans was a stock rebuild/stock TC, with no shift kit so I will have now have the chance to see for my self the difference between the "Old" and the "New" TCI 727 with a shift kit and their Breakaway converter.
That's just it. The Breakaway, while a step up from "what you had" is 25-30 year old technology.
Also consider this. As I've said many times before, Chrysler actually USED converter stall speed, unlike Ford or Chevy. The stock stall for a Chrysler converter was generally "around" 1200-1700 RPM. They knew a higher stall speed was essential in getting the car moving with that "effortless" feel, and they were right! The factory high stall ratings were "about" 1000 RPM above the stock rating. That's what you got in say a 383 HP or 440 Super Commando car. So, the converter you have chosen would be about perfect for a stock 69 440 Cuda. You have a fairly warm 383, which has a good bid less stroke (and torque) than a 440. Even with the "purple cam" and the "stealth heads" it still may not reach its full potential, since it has "only" a 3.375" stroke.
