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Rear diff kit?
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   Forward Look Technical Discussions -> Transmission and Rear AxleMessage format
 
59ride
Posted 2019-03-08 7:01 PM (#579050)
Subject: Rear diff kit?



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Location: Chesterfield, Virginia
Does anyone know who sells a rear differential rebuild kit( bearings,seals gears,ect.) for a 59 Firesweep with a 3.31 ratio? Thanks ahead.
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58coupe
Posted 2019-03-09 2:39 AM (#579067 - in reply to #579050)
Subject: Re: Rear diff kit?



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You can find them online such as Ebay but not sure they are listed for 59 desoto. First determine if you have an open rear or limited slip because they are different size.
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wizard
Posted 2019-03-09 4:35 AM (#579068 - in reply to #579050)
Subject: Re: Rear diff kit?



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RockAuto has the bearings and kits for this - not the gears though. First check if the gears are worn - it might just be the bearings….
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59ride
Posted 2019-03-09 11:22 AM (#579077 - in reply to #579050)
Subject: RE: Rear diff kit?



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Location: Chesterfield, Virginia
The diff is an open unit. There is no noise yet ,just a lot of play on the diff yoke end ,around 1/1/2 to 2"before it engages.
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57chizler
Posted 2019-03-09 3:24 PM (#579090 - in reply to #579077)
Subject: RE: Rear diff kit?



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To order parts you need to determine the pinion size by the casting number on the lower left side of the housing. The 3.31 gears won't be available new and likely the open differential spider gears won't be either.
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Shep
Posted 2019-03-09 8:23 PM (#579094 - in reply to #579077)
Subject: RE: Rear diff kit?



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pull it out and check the backlash first.
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59ride
Posted 2019-03-11 3:39 PM (#579183 - in reply to #579050)
Subject: RE: Rear diff kit?



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Location: Chesterfield, Virginia
The diff casting #is X-1820657 (aka 657), probably the original rear with 3.31 gear.
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57chizler
Posted 2019-03-12 12:29 PM (#579240 - in reply to #579183)
Subject: RE: Rear diff kit?



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The 657 has the 1 3/8" pinion stem, equivalent of the later 741.

Edited by 57chizler 2019-03-14 12:56 PM
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59ride
Posted 2019-03-12 3:15 PM (#579255 - in reply to #579050)
Subject: RE: Rear diff kit?



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Location: Chesterfield, Virginia
My mistake;the pinion seal is 1-3/8"Early 741.
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mstrug
Posted 2019-03-12 7:07 PM (#579259 - in reply to #579050)
Subject: Re: Rear diff kit?



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I don't know if these will fit or if you even need them: https://www.ebay.com/itm/MOPAR-NOS-DIFFERENTIAL-SPIDER-GEARS-57-58-5...
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Administrator
Posted 2019-03-14 9:27 PM (#579342 - in reply to #579050)
Subject: Re: Rear diff kit?



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[2019-03-14 Automated Thread Reset]
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