I have a vibration at about 1900 rpm that stops around 2300 rpm. I thought it was the flywheel maybe spun a weight, but while pulling tranny i noticed 2 bellhousing bolts (top left and next one down) were broke well the actual case around the bolt, and top right was loose could this be my vibration.

 

i would say theres a good chance thats the problem. whatever broke the bolts may have also bent something so you need to be on the lookout for anything out of wack.

 

Welcome to our Forum !

Ditto on crab's reply....

 

might be a tire problem some time you can a bad belt and drive out of the viberation at higher speeds and then it come back at lower speeds