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#1 |
Registered User
Join Date: Mar 2006
Location: long island
Posts: 25
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putting in a posi unit
so i got a posi unit for a 8.5 rear end... i want to mabye put it in my truck it is a 86 k10 so it has 10 bolts on the cover is it a 8.5 rear?? if so do i take the cover off make sure i keep the shims in the right place swap the carirer bolt on the gears and put it back in?? if it is easy i think im gunna do it
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#2 |
Registered User
Join Date: Jan 2004
Location: Weatherford,Tx
Posts: 747
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Re: putting in a posi unit
I've heard that everything has to almost be perfect or it will wear out in no time. Also requires special tools.
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#3 |
Parts and more parts
Join Date: Nov 2003
Location: Lebo, Kansas (middle of nowhere
Posts: 6,821
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Re: putting in a posi unit
I am thinking that if you don't take the time and trouble to set the backlash and engagement, then a troublesome time is a comin.
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#4 |
Registered User
Join Date: Aug 2006
Location: ocala fl
Posts: 19
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Re: putting in a posi unit
IF all you're changing is the "posi" unit,(same ring & pinion), as long as you get the backlash,(distance between the teeth on the ring gear & the pinion teeth), as long as they are the same, you'll be fine. Just don't count on that the shims that come out will put the ring gear in the same setting as the unit you took out. because of the different center(posi) & the different bearings, it will move sideways one way or another a few thousanths.
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