I have a 91 fox with a brand new 427 stroker in it, rebuilt trans, and a 2300 stall converter, get my engine fired up and my trans wont shift out of first when i drive, does anyone have any idea what could be wrong with it? any help would be great, also, if anyone has tips on smoothing out the idle, my idle surges right now, and ive run out of idea on fixing it, any help woudl be great.