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Old Aug 28, 2009 | 02:09 PM
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Draciel's Avatar
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Question Rearends
Did and of the 4th gen Montes come with a posi from the factory or did they all come with the crappy gears?
 
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Old Aug 28, 2009 | 02:25 PM
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I was thinking of something else when I entered this thread... Dang it!

Sorry, I don't know the answer to that.
 
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Old Aug 28, 2009 | 02:38 PM
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some of them came with POSI yes.

If you look at the RPO code and see G80 that has POSI.

I believe this only applies to 84+
 
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Old Aug 28, 2009 | 05:47 PM
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second that Rick
 
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Old Aug 28, 2009 | 06:11 PM
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Where abouts is this RPO code? I think it is somewhere in the VIN but where?
 
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Old Aug 28, 2009 | 07:21 PM
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Originally Posted by Draciel
Where abouts is this RPO code? I think it is somewhere in the VIN but where?
Usually on a sticker in the glovebox or the underside of the trunk lid. My bet would be in the glove box.
 
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Old Aug 29, 2009 | 01:17 AM
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Is the posi only in the SS?
 
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Old Aug 29, 2009 | 07:21 AM
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No , you could order a posi on any model. Was an option on the ss as well. 83-84 ss has 3.42 and the 85-88 had 3.73's.
 
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Old Aug 29, 2009 | 01:10 PM
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Which is better the 3.42 or the 3.73?
 
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Old Aug 29, 2009 | 01:21 PM
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neither it's the gearin 3.42's are more like a highway gear 3.72 is more of a acceleration gear if your looking at rear ends they usually come with 7.5 in 10 bolt rearend a better one is the 8.5 in
 
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