Did you know that they used to make a kit for most transmissions that delays the lockup to a higher MPH?
Might want to chk into that before getting into it too far.
yea we just installed one on the 46. a lot of extra wiring and cost involved with those though as you have a pressure switch and relay for both 4th and lockup. with the lock up under control i'll be able to see if I need to go that far or not.