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Unread 05-20-2010, 05:22 PM   #16
pspradlin2
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1983 CJ7 
 
Join Date: Dec 2009
Location: SIERRA VISTA ARIZONA
Posts: 94
so i came up with the idea that i was going to put an auburn locker in the amc 20 with 4.56 and just keep the dana 30 open in the front with 4.5 as well. but i called a local auto shop that specializes in driveline and they said that a dana 30 with 3.54 is as low as it gets. in order to go lower you have to get an axle that is made for 3.73 and up(in number). so now i guess this thread was wasted cause i am just gonna have to find some junk yard 44s.

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Unread 05-20-2010, 05:41 PM   #17
foggybottombob
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1984 CJ7 
 
Join Date: May 2008
Location: Monument Colorado
Posts: 5,830
That is not at all true. You have to change the Dana 30 carrier for 3.73 and up. That carrier still fits in any Dana 30 housing. Whomever you spoke to does not know what they are talking about. You only need a series 4 dana 30 carrier. I have at least a couple in my garage right now.
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Unread 05-21-2010, 10:05 AM   #18
pspradlin2
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1983 CJ7 
 
Join Date: Dec 2009
Location: SIERRA VISTA ARIZONA
Posts: 94
ok i thought i would just have to get a new carrier and all the gears but he said that it would not fit. i think i should call back and talk to the guy that actually owns the place.
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Unread 05-22-2010, 05:53 AM   #19
Happy Joe
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1985 CJ7 
 
Join Date: Jun 2007
Location: Colorado
Posts: 2,365
T-5s came with 2 different overdrive ratios; the .8X ratio is a good match to 4.56 gears and 35 inch tires, but the .7x ratio is excessively high in overdrive for 4.56 gears and seems to be a better match for 4.88 gears with 35 inch tires on the highway.

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Unread 05-22-2010, 07:27 AM   #20
foggybottombob
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1984 CJ7 
 
Join Date: May 2008
Location: Monument Colorado
Posts: 5,830
I agree with Happy Joe. The two ratios are 0.76 and 0.86. The 0.86 ratio is most common but I happened to find one with 0.76 so 5th gear is really tall.
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