I posted in the Q and A section.Post it here too.Just had the tranny overhauled in my 69 340 Dart.Car is all stock.Had them go ahead and throw a Transgo shift kit in it.Told them nothing to radical as its bone stock.Some thing along a RV shift kit Get the car back and after a few days I stomp on it from a 15 mph roll.It drops to first and the rpms climb well past 6k and I have to get completely out of the gas for it to upshift.Thinking that was weird a few days later I manually shifted it at 5500 and the rpms once again kept climbing well past there.Thoughts? They do have a warranty for a year or 12k miles.