I just swap a th400 into my 98 formula. i was wondering if i have to do anything with the park neutral switch?
is there anything from the trans side that would keep it from starting up?

 

There should not be the PRNDLE is in the console in that car.

 

Ok i took it out of the car and jumped the wires dark green to purple.
It starts now.

Any secial way i should break in this trans i built it myself and it turns the wheels just didnt know if i should take it gentle for awhile or what?

I figured i would let it run on the jackstands for awhile, and run it up through the gears.