# Max rear driveshaft angle?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by djohnsn, Aug 8, 2001.

1. ### djohnsn1/2 ton status

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What problems should I expect from running my rear driveshaft (non-cv style) at 17 degrees? Short U-joint life? I thought that I read somewhere that the maximum angle for this type of shaft should be at 15 degrees.

I have the pinion and transfer case output angles equal at 6 degrees. This is a 350, th350, np205, 4" spring with 1" ORD add a leafs in a 78 Blazer.

Would it be better to convert to a CV-style shaft?

DJ
78 K5

2. ### ftn961/2 ton status

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Im confussed? You have the angles at 6 degrees even but where is the 17 coming from?
If you working angle at the T-case is 6 and the working angle at the pinion are the same at 6 degree each you are good to go.

Does anyone have a grinding disk I can borrow?3/4 in progress
<a target="_blank" href=http://www.nashvillek5.freeservers.com>www.nashvillek5.freeservers.com</a>

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I think he means the pinion and transfer case are 6 degrees off from level but due to the height difference between the two the driveshaft is at 17 degrees (correct me if I'm wrong). From a level standpoint the drive shaft is running at 11 degrees (17-6) relative to the yokes. The optimum angle is about 3 degrees, so you will experience shortened u-joint life. I was running about 8 degrees before the conversion and my u-joints lasted quite a while.

If you didn't build it yourself, how can you call it yours.......?

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