727 dry start

So unless the trans is separated from the motor, there’s really no way to tell if it’s a lockup or not?

Then tell Chrysler they made a mistake. That is taken directly, verbatim, from the 1969 Charger/Coronet/Dart Factory Service Manual, page 21-48. I also couldn't find anything in the TSB's on The 1970 Hamtramck Registry Home Page that contained this caution. View attachment 1715869156
Then you are damn lucky you got me around to set you straight; before you screw things all up!!