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I have an '81 CJ7 with the AMC 20 in the rear. I know that this is the wimpiest axle to end up with, and i was just wondering what the limits on it would be, like tires and off-road use. I currently have 35's on my Jeep, and wonder if i should swap out the rear before it breaks on me in the middle of nowhere.
 

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I'd swap it out toa D44 at least. If you are going to swap to the 350, you may want to look for a D60 even. Ratio and lcoker options for both those are enormous. Might as well swap a 44 up front as well. Go full width and get some extra stability and flex (more leverage on the springs)
 

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The AMC mod 20 axle is wimpy, with the stock 2-peice axles. However, The ring & pinoin are larger than that of a dana 44. The axle tubes of a dana 44 are noticably thicker though. The AMC 20, with 1 peice axles installed becomes a much better axle than the stock AMC 20.
 

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Troy is right. The one piece shaft is the best mod for the 20. If money is tight do the shaft and call it good. You could get a boneyard 60 or Corp14, shave it, narrow it, adn call it a day too :wink:~
 

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Hey Cord, I like your new jeep name! ToyJ-7
It fit's. Level 3 511 done. Level 4 next week!
Later...
 
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