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Old 03-30-2004, 06:31 PM
Morris Morris is offline
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Join Date: Dec 2003
Location: Gurnee, IL
Cobra Make, Engine: Kirkham #259
Posts: 1,396
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Kris

Here's something from Denny's Driveshaft service...

I've got some drawings .... just have to find them...

http://www.dennysdriveshaft.com/

How much driveline angle is right for my application?
Thats a loaded question. The best answer is....the least amount of driveline or u-joint angle is the best amount of angle. Try to achieve the least amount of u-joint angle but don't make it less than 1 degree. A little known fact about u-joints is that they require about 1 degree of operating angle to get the needle bearings rotating. If they do not rotate they will fail. Too much angle will also cause them to fail. The type of rear suspension also plays a big part in setting the angles as well as the engine/transmission angle. Leaf spring cars have a need for more downward pinion angle due to spring wrap-up while coil spring cars control the situation better. Hard acceleration as in the case of a drag race car requires a different setting than a street driven car. Traction bars, ladder bars, 4 links, independent rears all have special needs and requirements.

Hope this helps....
Morris
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