Bill, wow lol, 16 second quarter mile times is pretty good for a stock Packard faster than I would have guessed. I can never find anything on the Ultramatic I was going between the adapter to modern auto, modern stick, Hydramatic 4 speed or Packard manual swap. The Ultramatic has a really good torque converter it is a full lock up style from what I read that is similar to a modern one. But again NO hot rod info on them at all. I was concerned about how tough they were and if making decent power would fry it, but if high RPM (in perspective) neutral drops in a 4k pound car wont hurt it I might keep it for a while, I have the one in my car and one on my spare engine so that's 2 I can abuse lol. Worst case use up my cores and go to something else later down the road.
