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Old 07-23-2005, 01:17 AM
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rear gear changes

I am switching to a 700R and am going to change from 3.73 rear gears to 4.56's. I have one tire fire now. What parts will I need to do this change to posi?

Thanks.....

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Old 07-23-2005, 08:23 AM
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More informaion needed.. it appears you are working on a GM vehicle?


Make , model , year of the vehicle?


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Originally Posted by black66
I am switching to a 700R and am going to change from 3.73 rear gears to 4.56's. I have one tire fire now. What parts will I need to do this change to posi?

Thanks.....
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Old 07-23-2005, 05:26 PM
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well first off, your going to have to find out if your drive shaft needs to be shortened or lengthened. then you need to a 4 series posi carrier, your 456 gear set, make sure the carrier is for the right size rear, 10 12 bolt etc. then when you get the gears get an in stall kit with shims for the pinion and carrier. Your probably going to need a dial indicator to set the pre load on the gear's as well.
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