Drive Shaft Angles In Question

[peeblesj]

Hey Guys,

I have been doing a bunch of research on the subject, but would just like a few other more experienced opinions.... I lowered by C10 by doing the rear axle flip (leaf spring rear end). I had the drive shaft shortened due to the axle flip and the LS swap. New U joints and a new carrier bearing as well as drive shaft balancing was all done at the same time. Drove the truck daily for about 3 months and now the carrier bearing is shot. it was pushed completely through towards the rear of the truck (rubber isolater was completely torn). There was no vibration at all until all of a sudden it must have blown out and the vibration was horrible. I have drawn up the angles for the rear end, rear shaft, front shaft, and transmission. I also drew up the slip yoke in the center showing the slip yoke to shaft overlay.

Please take a look and let me know if there is something that I am missing. Are the angles usable or should I shim something? Is there enough overlay between the rear shaft and the front shaft? Is there too much of an angle at the carrier bearing? Could the carrier bearing just be defective?

I have to decide if I need to alter the shaft lengths or change the angles (currently added a 3" spacer under the trans tail to achieve shown angles, which may be too much of a spacer).... I already have a new carrier bearing ready to install. Thanks for looking!!