[SMOKNAC]

From my understanding they started installing ZF rear-end around #2985, I own #2990. The problem I have now after installation of motor and Trans is, I have 8 degrees on my drive shaft. You should have between 3 & 5 degrees. At around 45 mph or so I have a vibration. I’ve been told that I’m going to be eating up u joints. Motor, trany, side pipes all look good. If I shim the trany, then the side pipes will be into the body. I installed a FE428 in mine. I don’t think it’s going to be any different if you put a small block in it.
SPF did not do the homework prior to installing the new ZF rear end. What SPF in Irvine is telling me is, is to raise the rear of the rear end. Well the puts a preload on the front bushings. And Barry told me that he had a customer do that, and it didn’t work, still had the vibration. Bottom line, I’m dealing with a rear-end that has been welded in, and the pinion angle is wrong. I just talked to Barry in Irvine (again) trying to get some info on what the fix on these new cars. And Berry can’t tell me anything!! I asked Berry for Jimme Price # so I could call him, but he would give me his #. As of right now my car is on the road, but don’t want to dive it tell I get this rear-end fix. I don’t want to be eating up u joints.
If anyone out there can tell me a fix, that would be GREAT!! Because Superformance is just blowing me off.