12 Bolt Differential Questions

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Last post by jdraceco « Sun Jul 16, 2006 10:52 pm
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Last post by jdraceco
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Olds 9.3" 12 bolt or is it

Last post by monzaz « Sat Jun 01, 2024 2:30 pm
Replies: 4
by chevy56 » Tue May 28, 2024 3:54 pm

4 Replies

9145 Views

Last post by monzaz
Sat Jun 01, 2024 2:30 pm
Oldsmobile type ‘O’ 12 bolt question

Last post by monzaz « Mon Apr 22, 2024 7:47 am
Replies: 17
by 67CSConvert455 » Thu Mar 28, 2024 11:07 pm
1

2
17 Replies

24898 Views

Last post by monzaz
Mon Apr 22, 2024 7:47 am
Ringear bolts

Last post by monzaz « Mon Oct 30, 2023 2:10 pm
Replies: 1
by Malibu ss 64 » Thu Oct 19, 2023 10:36 am

1 Replies

9375 Views

Last post by monzaz
Mon Oct 30, 2023 2:10 pm
Posi id

Last post by monzaz « Thu Aug 24, 2023 10:28 pm
Replies: 2
by Malibu ss 64 » Mon Aug 21, 2023 1:22 pm

2 Replies

7414 Views

Last post by monzaz
Thu Aug 24, 2023 10:28 pm
30 splines c-clip axles

Last post by monzaz « Sat Aug 19, 2023 11:37 pm
Replies: 1
by Malibu ss 64 » Wed Aug 16, 2023 11:01 am

1 Replies

5740 Views

Last post by monzaz
Sat Aug 19, 2023 11:37 pm
1966-76 9.375" Oldsmobile 12 bolt question

Last post by monzaz « Thu Jun 08, 2023 9:47 am
Replies: 8
by funkhoss » Thu Jun 01, 2023 1:16 pm

8 Replies

13658 Views

Last post by monzaz
Thu Jun 08, 2023 9:47 am
12 Bolt Gears/Posi - Question

Last post by monzaz « Sun Oct 31, 2021 9:39 am
Replies: 1
by mphudak » Sun Oct 17, 2021 7:46 am

1 Replies

9941 Views

Last post by monzaz
Sun Oct 31, 2021 9:39 am
Chev car 12 bolt side hole spacing.

Last post by 95wagon « Fri Jun 11, 2021 9:12 pm

by 95wagon » Fri Jun 11, 2021 9:12 pm

0 Replies

8631 Views

Last post by 95wagon
Fri Jun 11, 2021 9:12 pm
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

11643 Views

Last post by monzaz
Sat Dec 28, 2019 12:04 am
Spring perch

Last post by monzaz « Sun Apr 14, 2019 10:27 am
Replies: 1
by Oldsman70 » Fri Apr 12, 2019 5:24 pm

1 Replies

10839 Views

Last post by monzaz
Sun Apr 14, 2019 10:27 am
Olds Type 'O' casting date

Last post by monzaz « Fri Dec 14, 2018 11:16 pm
Replies: 1
by GasRUp » Fri Dec 14, 2018 1:53 pm

1 Replies

10826 Views

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

Last post by monzaz « Sat Sep 01, 2018 8:58 am
Replies: 1
by 652plus2 » Fri Aug 31, 2018 11:35 pm

1 Replies

11196 Views

Last post by monzaz
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

12756 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

15721 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

17171 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

21795 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

10693 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

13479 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

9757 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

13663 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

25017 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

15598 Views

Last post by Mark Demko
Sun Jan 03, 2016 7:25 pm
Posi springs

Last post by monzaz « Wed Jun 17, 2015 8:52 pm
Replies: 4
by muzzy » Sat Jun 13, 2015 5:12 pm

4 Replies

14787 Views

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

Last post by steve69 « Wed Dec 17, 2014 11:46 am
Replies: 6
by steve69 » Fri Nov 21, 2014 6:13 pm

6 Replies

19379 Views

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

Last post by monzaz « Fri Oct 10, 2014 7:40 am
Replies: 6
by Ricky » Thu Oct 02, 2014 1:09 am

6 Replies

17543 Views

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

Last post by monzaz « Fri Sep 26, 2014 12:11 am
Replies: 3
by 66submarine » Sun Sep 14, 2014 11:38 pm

3 Replies

12160 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

8933 Views

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

Last post by monzaz « Wed Jun 25, 2014 10:54 am
Replies: 6
by csouth » Mon Apr 02, 2012 3:03 pm

6 Replies

24636 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

9263 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

50411 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

17376 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

10136 Views

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

Last post by monzaz « Sun Jan 27, 2013 1:31 pm
Replies: 3
by MWireman » Fri Jan 25, 2013 11:08 am

3 Replies

14702 Views

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

Last post by monzaz « Mon Dec 03, 2012 7:26 am
Replies: 7
by als68442 » Mon Nov 26, 2012 12:20 pm

7 Replies

20366 Views

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

Last post by monzaz « Sat Sep 08, 2012 7:47 pm
Replies: 3
by 71MONTE4YA » Thu Sep 06, 2012 4:21 pm

3 Replies

13559 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

9760 Views

Last post by monzaz
Mon Jul 16, 2012 9:43 pm
8.75 Posi Carrier in 8.875 Full Size

Last post by monzaz « Fri Jul 06, 2012 7:35 am
Replies: 3
by MikeMike123 » Tue Jul 03, 2012 2:26 pm

3 Replies

14503 Views

Last post by monzaz
Fri Jul 06, 2012 7:35 am
12 bolt 9.3

Last post by monzaz « Sun Feb 05, 2012 4:22 pm
Replies: 3
by glenn4spgs » Sat Feb 04, 2012 8:38 pm

3 Replies

13594 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

17106 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

10240 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

18917 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

9837 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

9361 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

33169 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

25025 Views

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

Last post by monzaz « Mon Jan 03, 2011 9:22 am
Replies: 1
by Hoonbash » Thu Dec 30, 2010 8:54 am

1 Replies

10457 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

25457 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

24243 Views

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

Last post by monzaz « Wed May 12, 2010 9:29 pm
Replies: 3
by clm69z28 » Mon May 10, 2010 8:40 pm

3 Replies

14736 Views

Last post by monzaz
Wed May 12, 2010 9:29 pm
12 bolt evaluation and parts

Last post by monzaz « Sun Apr 04, 2010 10:37 am
Replies: 9
by GSDrew » Mon Feb 23, 2009 2:02 pm

9 Replies

24807 Views

Last post by monzaz
Sun Apr 04, 2010 10:37 am

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