I have a 85 ramchager that I pulled the engine and trans out of becase they were bad and put in good ones out of a 83 pickup it now has a 318 ans an auto tans(not sure witch one) and it wont move it runs fine and it drove before we made the swap it has enough tranny fluid and the lincage is hooked up properly and now when you take it out of park it acts like it is in neutral all the time any thoughts