Home » Public Forums » GMCnet » [GMCnet] locker diff
| [GMCnet] locker diff [message #149516] |
Sat, 12 November 2011 20:57  |
Gary Worobec
Messages: 867
Registered: May 2005
Karma: -1
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Hi, Since I had to have someone sit in the Tracker and push me up a muddy section of our road I'm looking at one of Jim's lockers. I understand they work just fine but since I have not swapped out a diff on the GMC I'm wondering how difficult it is. Is it the same as a regular diff, just adjust the crown wheel for contact on the pinion and button it up. Do the stub axles come out pretty easy? Should new bearings be installed?
Anyone have any insights,
Thanks
Gary and Joanne Worobec
1973 GMC Glacier
Anza, CA
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| Re: [GMCnet] locker diff [message #149524 is a reply to message #149516] |
Sat, 12 November 2011 22:01  |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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Gary, the best way to do it is to exchange the final drive assembly with
the one fitted with the LS. On most cases, to get the correct ring gear to
pinion side clearance, a case spreader is a very handy tool to have. Some
diffs do not require a spreader, but many do. Cinnabar is the only source
for the appropriate thickness of shims, which is how the clearance is
adjusted on that diff. It is not much of a hassle to change the
differential housing, the alignment of the drive shaft is critical when you
are lying under the coach holding the 100 pound assembly at arms length. A
transmission jack is very handy.
Jim Hupy
Salem, OR
78 GMC Royale 403
On Sat, Nov 12, 2011 at 6:57 PM, Gary Worobec <gtw5@earthlink.net> wrote:
> Hi, Since I had to have someone sit in the Tracker and push me up a muddy
> section of our road I'm looking at one of Jim's lockers. I understand they
> work just fine but since I have not swapped out a diff on the GMC I'm
> wondering how difficult it is. Is it the same as a regular diff, just
> adjust the crown wheel for contact on the pinion and button it up. Do the
> stub axles come out pretty easy? Should new bearings be installed?
>
> Anyone have any insights,
>
> Thanks
>
> Gary and Joanne Worobec
> 1973 GMC Glacier
> Anza, CA
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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| Re: [GMCnet] locker diff [message #149593 is a reply to message #149524] |
Sun, 13 November 2011 21:22 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Jim,
We supply people with shims as well.
On Sat, Nov 12, 2011 at 8:01 PM, James Hupy <jamesh1296@gmail.com> wrote:
> Gary, the best way to do it is to exchange the final drive assembly with
> the one fitted with the LS. On most cases, to get the correct ring gear to
> pinion side clearance, a case spreader is a very handy tool to have. Some
> diffs do not require a spreader, but many do. Cinnabar is the only source
> for the appropriate thickness of shims, which is how the clearance is
> adjusted on that diff. It is not much of a hassle to change the
> differential housing, the alignment of the drive shaft is critical when you
> are lying under the coach holding the 100 pound assembly at arms length. A
> transmission jack is very handy.
> Jim Hupy
> Salem, OR
> 78 GMC Royale 403
>
> On Sat, Nov 12, 2011 at 6:57 PM, Gary Worobec <gtw5@earthlink.net> wrote:
>
>> Hi, Since I had to have someone sit in the Tracker and push me up a muddy
>> section of our road I'm looking at one of Jim's lockers. I understand they
>> work just fine but since I have not swapped out a diff on the GMC I'm
>> wondering how difficult it is. Is it the same as a regular diff, just
>> adjust the crown wheel for contact on the pinion and button it up. Do the
>> stub axles come out pretty easy? Should new bearings be installed?
>>
>> Anyone have any insights,
>>
>> Thanks
>>
>> Gary and Joanne Worobec
>> 1973 GMC Glacier
>> Anza, CA
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] locker diff [message #149596 is a reply to message #149593] |
Sun, 13 November 2011 21:35 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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Thanks for the info, I did not know that. I will be in the market for a set
of 3:50 gears soon. I now have a rebuilt 455, and a locally rebuilt TH425
Transmission, and I want to have a rebuilt final drive on hand as well.
Then when I get someone that needs them, we will have them on hand with no
freight and no delay. Did you get your Torsion tools? Still thinking about
the mid west thing. I will let you know.
Jim Hupy
Salem, OR
78 GMC Royale 403
On Sun, Nov 13, 2011 at 7:22 PM, Jim Kanomata <jimkanomata@gmail.com> wrote:
> Jim,
> We supply people with shims as well.
>
> On Sat, Nov 12, 2011 at 8:01 PM, James Hupy <jamesh1296@gmail.com> wrote:
> > Gary, the best way to do it is to exchange the final drive assembly with
> > the one fitted with the LS. On most cases, to get the correct ring gear
> to
> > pinion side clearance, a case spreader is a very handy tool to have. Some
> > diffs do not require a spreader, but many do. Cinnabar is the only source
> > for the appropriate thickness of shims, which is how the clearance is
> > adjusted on that diff. It is not much of a hassle to change the
> > differential housing, the alignment of the drive shaft is critical when
> you
> > are lying under the coach holding the 100 pound assembly at arms length.
> A
> > transmission jack is very handy.
> > Jim Hupy
> > Salem, OR
> > 78 GMC Royale 403
> >
> > On Sat, Nov 12, 2011 at 6:57 PM, Gary Worobec <gtw5@earthlink.net>
> wrote:
> >
> >> Hi, Since I had to have someone sit in the Tracker and push me up a
> muddy
> >> section of our road I'm looking at one of Jim's lockers. I understand
> they
> >> work just fine but since I have not swapped out a diff on the GMC I'm
> >> wondering how difficult it is. Is it the same as a regular diff, just
> >> adjust the crown wheel for contact on the pinion and button it up. Do
> the
> >> stub axles come out pretty easy? Should new bearings be installed?
> >>
> >> Anyone have any insights,
> >>
> >> Thanks
> >>
> >> Gary and Joanne Worobec
> >> 1973 GMC Glacier
> >> Anza, CA
> >> _______________________________________________
> >> GMCnet mailing list
> >> Unsubscribe or Change List Options:
> >> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> >>
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> >
>
>
>
> --
> Jim Kanomata
> Applied/GMC, Fremont,CA
> jimk@appliedairfilters.com
> http://www.appliedgmc.com
> 1-800-752-7502
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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