gearing problem - Page 2 - JeepForum.com

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post #16 of 20 Old 05-20-2010, 06:22 PM Thread Starter
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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post #17 of 20 Old 05-20-2010, 06:41 PM
foggybottombob
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1984 CJ7 
 
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Location: Monument Colorado
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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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post #18 of 20 Old 05-21-2010, 11:05 AM Thread Starter
pspradlin2
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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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post #19 of 20 Old 05-22-2010, 06:53 AM
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.

Enjoy!

...a well prepped, well driven, vehicle should do well in any terrain, including the highway.

Carburetors became obsolete during the last century... do what ever it takes to get fuel injection...It makes bigger grins off road.
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post #20 of 20 Old 05-22-2010, 08:27 AM
foggybottombob
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Location: Monument Colorado
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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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