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1981 differential question

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Old Apr 8, 2011 | 10:30 AM
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From: denton tx
Default 1981 differential question

Im about to rebuild my rearend and would like to put in a set of 3:54 or 3:73 gears. The question is do I need to replace the carrier unit as well or will it work with the new gears?
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Old Apr 8, 2011 | 12:08 PM
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Do you have the dana aluminum rearend? You need to buy your ring/pinion set based on the the type of differential you have.
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Old Apr 8, 2011 | 12:40 PM
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yes rebelrob it is the aluminum rear end with 2:76 gears right now i want to upgrde to 3:54 or 3:73. I've read several posts about it but noone mentions the carrier unit in any of them.
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Old Apr 8, 2011 | 08:19 PM
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You do not have to change the carrier unless something is wrong with it. You just need new ring and pinion and differential rebuilding kit. No thrust washer on 80 - 82 diffs



I went with 3.55 and love it also have 5 speed manual trans
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Old Apr 9, 2011 | 09:04 AM
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Thank you Spedaleden that is very helpful.
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Old Apr 9, 2011 | 09:21 AM
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Stay away from Richmond Gear, used to be great but quality is not what it used to be. I used Richmond first time as gears worn in noise got worse. I think my next set was motive which have been fine so far, for 10,000 miles
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