holley 4010 kickdown?

Don't drive it till you get it set up. Driveing it "D" will destroy the trans in 10-20 miles. And I mean destroy the trans to the point of a new one will be needed.

it doesn't slip or anything when i shift it manualy though. and i keep it real low RPM's. I drove it back from 200 miles when I bought it, and have been driving it daily for the past week. should I really stop driving it? I read somewhere on another mopar forum that i should shift manually like this so that it doesn't slipp..

but my dad said that that doesn't sound right, so maybe people saying that thats whay i should do were just talking out of their azzes