12 Bolt Differential Questions

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need a type o differential

Last post by monzaz « Sat Dec 28, 2019 12:04 am
Replies: 1
by jopa200 » Fri Dec 27, 2019 9:33 pm

1 Replies

1657 Views

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Sat Dec 28, 2019 12:04 am
Spring perch

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Replies: 1
by Oldsman70 » Fri Apr 12, 2019 5:24 pm

1 Replies

1965 Views

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Sun Apr 14, 2019 10:27 am
Olds Type 'O' casting date

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by GasRUp » Fri Dec 14, 2018 1:53 pm

1 Replies

2107 Views

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Fri Dec 14, 2018 11:16 pm
68 and up a body Chevy 12 width verses 65 Catalina width.

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by 652plus2 » Fri Aug 31, 2018 11:35 pm

1 Replies

2700 Views

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Sat Sep 01, 2018 8:58 am
12 bolt ring gear 10 bolt cover/ 12 bolt chevy

Last post by monzaz « Tue Aug 28, 2018 12:47 am
Replies: 1
by 652plus2 » Mon Aug 27, 2018 2:24 pm

1 Replies

2605 Views

Last post by monzaz
Tue Aug 28, 2018 12:47 am
1970 12 Bolt "O" Detroit Truetrac

Last post by monzaz « Mon May 28, 2018 5:39 pm
Replies: 3
by davel » Tue May 22, 2018 10:29 am

3 Replies

3936 Views

Last post by monzaz
Mon May 28, 2018 5:39 pm
67 Catalina

Last post by monzaz « Wed May 02, 2018 7:32 am
Replies: 3
by 67cat » Mon Apr 30, 2018 8:59 pm

3 Replies

3918 Views

Last post by monzaz
Wed May 02, 2018 7:32 am
65 rear axle question

Last post by monzaz « Wed Mar 14, 2018 1:01 pm
Replies: 5
by Classics65 » Sat Apr 15, 2017 8:27 pm

5 Replies

5811 Views

Last post by monzaz
Wed Mar 14, 2018 1:01 pm
'70 12 bolt "O" strengthening.

Last post by monzaz « Thu Jul 27, 2017 8:00 am
Replies: 1
by mr.grim » Mon Jul 10, 2017 12:04 pm

1 Replies

4117 Views

Last post by monzaz
Thu Jul 27, 2017 8:00 am
12 Bolt Cover Olds rear end

Last post by monzaz « Mon Apr 24, 2017 8:31 pm
Replies: 2
by 70supreme » Sun Apr 23, 2017 1:34 pm

2 Replies

4697 Views

Last post by monzaz
Mon Apr 24, 2017 8:31 pm
Opinions/Parts

Last post by monzaz « Tue Feb 28, 2017 10:31 am
Replies: 1
by Utah Boatail » Mon Feb 27, 2017 3:24 pm

1 Replies

3540 Views

Last post by monzaz
Tue Feb 28, 2017 10:31 am
12 bolt b body

Last post by monzaz « Mon Jan 30, 2017 5:55 pm
Replies: 3
by Lowrider » Wed Jan 25, 2017 1:51 am

3 Replies

5189 Views

Last post by monzaz
Mon Jan 30, 2017 5:55 pm
Type O? Questions.

Last post by Seth « Mon Feb 22, 2016 4:16 pm
Replies: 4
by Seth » Wed Feb 17, 2016 8:37 am

4 Replies

14559 Views

Last post by Seth
Mon Feb 22, 2016 4:16 pm
Chevy 12 bolt rear axle upgrade

Last post by Mark Demko « Sun Jan 03, 2016 7:25 pm
Replies: 2
by Mark Demko » Fri Jan 01, 2016 6:37 am

2 Replies

7538 Views

Last post by Mark Demko
Sun Jan 03, 2016 7:25 pm
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Replies: 4
by muzzy » Sat Jun 13, 2015 5:12 pm

4 Replies

5347 Views

Last post by monzaz
Wed Jun 17, 2015 8:52 pm
12 Bolt Housing

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Replies: 6
by steve69 » Fri Nov 21, 2014 6:13 pm

6 Replies

6717 Views

Last post by steve69
Wed Dec 17, 2014 11:46 am
Buick 12 bolt rear end problem

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Replies: 6
by Ricky » Thu Oct 02, 2014 1:09 am

6 Replies

5847 Views

Last post by monzaz
Fri Oct 10, 2014 7:40 am
EDB-30152 posi carrier--what's it from/what's it worth?

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Replies: 3
by 66submarine » Sun Sep 14, 2014 11:38 pm

3 Replies

4405 Views

Last post by monzaz
Fri Sep 26, 2014 12:11 am
Gear contact pattern

Last post by monzaz « Sun Aug 03, 2014 10:46 am
Replies: 1
by ScottRamsey » Sat Aug 02, 2014 11:59 am

1 Replies

3143 Views

Last post by monzaz
Sun Aug 03, 2014 10:46 am
Olds Type "O" Rear posi conversion

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Replies: 6
by csouth » Mon Apr 02, 2012 3:03 pm

6 Replies

12014 Views

Last post by monzaz
Wed Jun 25, 2014 10:54 am
Swapping out Olds 12 bolt for BOP 10 bolt

Last post by monzaz « Mon May 12, 2014 1:57 pm
Replies: 1
by lemans1 » Fri May 09, 2014 4:03 am

1 Replies

3611 Views

Last post by monzaz
Mon May 12, 2014 1:57 pm
12 bolt ID

Last post by monzaz « Fri Mar 07, 2014 1:05 am
Replies: 17
by m_kulsziski » Thu Jul 06, 2006 9:14 pm
1

2
17 Replies

17996 Views

Last post by monzaz
Fri Mar 07, 2014 1:05 am
1969 Olds rear end.

Last post by monzaz « Sat Feb 08, 2014 9:16 am
Replies: 5
by plumbbob » Sun Jan 05, 2014 4:06 pm

5 Replies

5898 Views

Last post by monzaz
Sat Feb 08, 2014 9:16 am
10-12 bolt gear ratios

Last post by monzaz « Thu Jan 30, 2014 1:42 pm
Replies: 1
by mtmay » Mon Jan 27, 2014 1:17 pm

1 Replies

3505 Views

Last post by monzaz
Thu Jan 30, 2014 1:42 pm
12 Bolt for G Body

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Replies: 3
by MWireman » Fri Jan 25, 2013 11:08 am

3 Replies

6064 Views

Last post by monzaz
Sun Jan 27, 2013 1:31 pm
1968 442 axle bearings and seals

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by als68442 » Mon Nov 26, 2012 12:20 pm

7 Replies

6313 Views

Last post by monzaz
Mon Dec 03, 2012 7:26 am
Spring Perches

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Replies: 3
by 71MONTE4YA » Thu Sep 06, 2012 4:21 pm

3 Replies

5398 Views

Last post by monzaz
Sat Sep 08, 2012 7:47 pm
Jim.

Last post by monzaz « Mon Jul 16, 2012 9:43 pm
Replies: 1
by slow72monte » Mon Jul 09, 2012 2:23 pm

1 Replies

3630 Views

Last post by monzaz
Mon Jul 16, 2012 9:43 pm
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by MikeMike123 » Tue Jul 03, 2012 2:26 pm

3 Replies

5673 Views

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Fri Jul 06, 2012 7:35 am
12 bolt 9.3

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3 Replies

4912 Views

Last post by monzaz
Sun Feb 05, 2012 4:22 pm
1970 olds 98 12 bolt diff.

Last post by monzaz « Sun Oct 02, 2011 1:54 pm
Replies: 4
by 1970 Olds 98 » Fri Sep 30, 2011 9:51 am

4 Replies

6906 Views

Last post by monzaz
Sun Oct 02, 2011 1:54 pm
1967 pontiac catalina

Last post by monzaz « Tue Aug 16, 2011 2:13 pm
Replies: 1
by navarrat » Sat Aug 13, 2011 1:20 am

1 Replies

3831 Views

Last post by monzaz
Tue Aug 16, 2011 2:13 pm
O Type

Last post by monzaz « Fri Aug 12, 2011 8:32 pm
Replies: 6
by robs70monte » Sat Aug 06, 2011 5:46 pm

6 Replies

6528 Views

Last post by monzaz
Fri Aug 12, 2011 8:32 pm
12 bolt carrier............for what?

Last post by monzaz « Tue Apr 05, 2011 3:43 pm
Replies: 1
by WMACHINE » Mon Apr 04, 2011 2:10 pm

1 Replies

4092 Views

Last post by monzaz
Tue Apr 05, 2011 3:43 pm
What makes a 12 bolt a 12 bolt??? what bolts count

Last post by monzaz « Mon Mar 21, 2011 1:54 pm
Replies: 1
by monzaz » Mon Mar 21, 2011 1:41 pm

1 Replies

3922 Views

Last post by monzaz
Mon Mar 21, 2011 1:54 pm
Posi differential ID

Last post by monzaz « Fri Feb 25, 2011 4:32 pm
Replies: 11
by Frankie » Wed Jan 14, 2009 1:30 am

11 Replies

12634 Views

Last post by monzaz
Fri Feb 25, 2011 4:32 pm
NEW PRODUCT NEW PRODUCT!

Last post by monzaz « Sat Jan 15, 2011 5:41 pm

by monzaz » Sat Jan 15, 2011 5:41 pm

0 Replies

20021 Views

Last post by monzaz
Sat Jan 15, 2011 5:41 pm
Rear disc brake conversion

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by Hoonbash » Thu Dec 30, 2010 8:54 am

1 Replies

3845 Views

Last post by monzaz
Mon Jan 03, 2011 9:22 am
12 BOLT S-10 STREET STRIP REAR DIFFERENTIALS

Last post by monzaz « Wed Aug 18, 2010 9:32 pm
Replies: 9
by monzaz » Wed Dec 17, 2008 10:39 am

9 Replies

10737 Views

Last post by monzaz
Wed Aug 18, 2010 9:32 pm
TIME

Last post by monzaz « Fri Aug 13, 2010 9:41 am

by monzaz » Fri Aug 13, 2010 9:41 am

0 Replies

18783 Views

Last post by monzaz
Fri Aug 13, 2010 9:41 am
Chevelle 12 Bolt Identification and Application Question

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by clm69z28 » Mon May 10, 2010 8:40 pm

3 Replies

5667 Views

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Wed May 12, 2010 9:29 pm
12 bolt evaluation and parts

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by GSDrew » Mon Feb 23, 2009 2:02 pm

9 Replies

8713 Views

Last post by monzaz
Sun Apr 04, 2010 10:37 am
Please comment on condition of carrier and gears

Last post by monzaz « Mon Mar 08, 2010 9:39 pm
Replies: 1
by rustyrelic » Fri Mar 05, 2010 12:57 pm

1 Replies

3903 Views

Last post by monzaz
Mon Mar 08, 2010 9:39 pm
12 Bolt carrier ID.

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Replies: 3
by BigBlockMan » Thu Nov 12, 2009 7:55 pm

3 Replies

5888 Views

Last post by monzaz
Mon Nov 16, 2009 8:07 pm
1970' Oldsmobile full size 12 bolt

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Replies: 5
by BigBlockMan » Thu Sep 24, 2009 7:56 pm

5 Replies

10043 Views

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Sat Oct 31, 2009 10:19 pm
66 Pontiac Grand Prix 12 bolt posi

Last post by monzaz « Fri Jul 10, 2009 10:49 pm
Replies: 1
by motocip » Mon Jul 06, 2009 9:11 am

1 Replies

4007 Views

Last post by monzaz
Fri Jul 10, 2009 10:49 pm
Help with casting number 393820

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Replies: 3
by Steve » Mon Jun 15, 2009 8:36 pm

3 Replies

5735 Views

Last post by monzaz
Sun Jun 21, 2009 2:20 pm
33 splines posi

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Replies: 5
by Malibu ss 64 » Sat Jan 24, 2009 10:43 am

5 Replies

5945 Views

Last post by monzaz
Wed Feb 11, 2009 9:41 pm
12 bolt pickup truck to car?

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Replies: 1
by carnutt » Wed Jan 07, 2009 12:11 pm

1 Replies

4271 Views

Last post by monzaz
Thu Jan 08, 2009 11:40 pm
MOSER 12 BOLT PICTURES

Last post by monzaz « Wed Jul 16, 2008 8:48 am

by monzaz » Wed Jul 16, 2008 8:48 am

0 Replies

7928 Views

Last post by monzaz
Wed Jul 16, 2008 8:48 am

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