904 question

I put the 318 in my 67 barracuda, so it could atleast move itself, but now it won't go into gear. I jacked the rearend and still nothing. The tranny worked with the other engine and I didn't change anything. Question #1 I put new trans cooling lines on, could I have put them on the wrong port? If so could that have any effect? Question # 2 What else did I do wrong? Thanks Chris