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Unread 10-17-2009, 07:42 PM   #1
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Hey can anybody advise me on a rear driveshaft for my 1981 CJ7. I have 1981 CJ7 with a chevy 350 GM 4 speed bull dog and np205 transfer case, rear axle is GM 14 bolt running 38 tsl for tires. Im having a hard time with this due to the pinion angle and will a stock drive shaft work any advise would be great thanks.

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Unread 10-17-2009, 07:45 PM   #2
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1994 XJ Cherokee 
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I doubt a stock axle shaft will work in length, let alone hold up to a V8 and 38.5" TSLs.

Call Tom woods or High Angle Driveline. Ive heard good things about both of them
5 Speed XJ Build - Daily Driver & Weekend Wheeler
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Unread 10-18-2009, 01:17 AM   #3
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1983 CJ7 
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Originally Posted by jmna View Post
... Im having a hard time with this due to the pinion angle and will a stock drive shaft work any advise would be great thanks.

A couple of bits of info could help us a lot...
1) What is the pinion yoke angle?
2) What is your TC yoke angle?
3) What gearing you have... if it's numerically low you'll put more stress on the driveshaft.

Your stock driveshaft (single cardan) will only work if it's the correct length and the angles match. Most times that means the rotational center of the TC output and axle input are parallel. Make all your measurements with the vehicle on its wheels at ride height.

Click here then see section on driveline

Tom Woods site will help you determine how to take length measurements.
Vibration? Bump steer? Wandering? Read: Steering, suspension, and driveline basics. An article on how it works and where to look for problems.

83 CJ7, 4.1L 6cyl (4.0L bored .030" over), 35" tires, T-5 transmission, Dana 300 TC, Trussed AMC 20.
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Unread 10-19-2009, 08:49 AM   #4
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See the tech pages at (Tom Wood's site) to see how the angles should be depending on what type of driveshaft you have.
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