I just installed one in the new lt1 setup and now I cant get the clutch to disengage. I am wondering if the disc is too thick or maybe I even torqued the pp bolts too tight. I didnt measure the disc before hand unfortunately. The hydrolics seem fine so im leaning towards this.

 

You put the clutch disc in backwards....

 

That is a possibility, but there are a few others too. I'm having a similar problem with a Ram Powergrip. My thread should be on the first page in the Drivetrain section.