AMC 20: Open or Trac-Lok -
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Unread 08-02-2011, 09:02 PM   #1
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Join Date: Aug 2011
Location: San Antonio, TX
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AMC 20: Open or Trac-Lok

I have taken the differential cover off and im not sure it i have the open or trac-lok. Can someone post a picture of the two so i can see the difference. I have a 79 CJ5 and it has the AMC 20 narrow axle. I have lifted the rear up and turned one wheel, both spun the same direction. But i put it in gear with the jeep on and i was able to stop one of the tires while the other continued to spin. I want to make sure i dont have the true-lok before buying an Aussie locker for it.

Does anyone have anything they dont like about the Aussie locker for the AMC 20?

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Unread 08-03-2011, 05:17 AM   #2
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1971 CJ5 
Join Date: Jan 2002
Location: Eagle Point Oregon
Posts: 6,186
Google images.
The Trac Lok has squared shoulders on the carrier while the open unit is rounded.
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amc 20 , differential , open differnetial , Trac-lok
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