[Formulajones]

The 9 inch does have it's weaknesses too. When running a stock center section, even the "N" case, they are prone to breaking the pinion bearing support. Doesn't take a ton of HP to do this. A decent running stick car with a good tire will do it. In severe cases the pinion ends up on the ground with the driveshaft still attached. But most of them I've seen were just broken inside on the small pinion bearing support and the pieces laying in the bottom. Those were probably on their way to dropping the pinion on the ground. Worked on quite a few with this issue.

The aftermarket cases pretty much cured that issue with more beef cast in that area and now I rarely ever see a problem there.