Originally Posted by elesquan

So I am not 100% positive I figured out the problem, but I thought through all of the process and remembered that the shop that resurfaced the flywheel were not able to get one of the 2 dowel pins out. They machined it off flush.
The other dowel pin was put back in.
I think that the little bit of extra weight from the complete dowel pin is causing the vibration. I will try to find a different flywheel to use the LS2 type pressure plate and get that installed. Not sure how soon, but I will try to remember to post the results.