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8 3/4 posi wanted

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youngunss1987

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looking for a 8 3/4 posi chunk for my challenger I have a 3.23 posi in it right now but would like to have one I can switch out when I go to the track .I am looking for one in 3.91 or a 3.73 gear set 489 case would be awesome but I have 741 case now and have no problems with it and my motor makes 450hp at the fly
 

moparleo

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Mopar differential options and terminology

OK guys. Here is a link that everyone should put in their favorite folder for future reference.
First thing is the term "posi has become a generic term for any LSD (limited slip differential). But that term is really a term for GM vehicles. The proper Mopar description is "Sure-grip". Dana"Track lok" and "Power lok" which are rebuildable. "Borg Warner spin resistant" Cone type " non rebuildable sure-grip found on 99% of sure grip 489 pigs.

The rebuildable clutch type are found on almost all "742" pigs.
Also 742 doesn't use a crush sleeve which also make it much easier to set-up new gears in.

http://www.waywardgarage.com/tech/rearaxlemopar.html
 
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youngunss1987

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moparleo thanks for the in info I did some research on this but I would
not consider my self a expert always good to learn new things the
website is very insightful. blewbyu I am very interested I must say
i only paid $500 for my last one on ebay but i did have to pay 600 $
after shipping so the price would have to be right i am 25 and have
collage debt definitely not a rich waxer so just be fair on the $
 
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