Originally Posted by sbafarm
centerline on the trans pinion and differential pinion should be parallel. Most driveline shops recommend a max of three degrees for a high speed shaft. More angle is allowed for slower shafts. For example, 11.5 degrees is ok for a shaft that only turns 1500 rpm max.

Good info!
This Tech Tip has more of the same: http://www.stovebolt.com/techtips/driveline/setup/index.html

The important thing in this situation is:
Rule #2 -- Universal joint operating angles on each end of a driveshaft should always be equal within 1 degree of each other.
(from the tech tip, and ultimately from the Spicer Driveline manual)

Grigg

•1951 GMC 250 in the Project Journals
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