Noise from 904 trans, after rebuild, on startup

I had just got the trans rebuilt in my demon. I got it all installed, and today went to start it up. As I was cranking i could hear a different noise. Once it fired the noise didn't go away. It sounds like a starter still engeged but it is not that. Any idea what may be the problem? Did I do something wrong? Am I supposed to do any thing to the trans before i installed it? Prime anything?