I have never installed pulleys on an AT vehicle. I know with a MT you put it in the top gear, use the E brake and have a buddy hold the pedal down to break the crank bolt free, but with an AT what would you do? Leave it in park, drive, or do you need a device to hold the crank at the back end?

Sorry to ask a dumb Q, but better safe than sorry. Thanks for any help.

 

this could be a wrong forum for this question.
But with a breaker bar, I think leaving it in park with the e-brake engaged should do the trick