3.42 O gears I have 2 sets of brand new Olds 12 bolt gears!

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Jun 25, 2014 | 07:46 AM

monzaz

Thread Starter

Registered User

Joined: Jul 2006

Posts: 1,826

From: Richfield, Oh

3.42 O gears I have 2 sets of brand new Olds 12 bolt gears!

I have 2 sets of BRAND NEW in the BOX Oldsmobile 12 BOLT 'O' type 8.5 diameter gears !!!

Anyone interested?

Look in the for sale forum
or PM me

Jim
J D

Jun 25, 2014 | 10:56 AM

Fun71

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Joined: Feb 2013

Posts: 15,409

From: Phoenix, AZ

GM or aftermarket? Specifically, which carrier do they fit?

Jun 30, 2014 | 08:21 AM

442Harv

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Joined: Mar 2007

Posts: 1,735

From: Tracy Ca

Are you saying 12 bolt cover and 10 bolt ring gear, or 12 bolt ring?

Jun 30, 2014 | 09:35 AM

joe_padavano

Old(s) Fart

Joined: Mar 2007

Posts: 50,802

From: Northern VA

Quote:

Originally Posted by 442Harv

Are you saying 12 bolt cover and 10 bolt ring gear, or 12 bolt ring?

Type O is the ten bolt 8.5" ring gear. There is no such thing as an 8.5" ring gear with 12 bolts. The Chevy 12 bolt ring gears are 8.875".

Jul 5, 2014 | 05:05 PM

monzaz

Thread Starter

Registered User

Joined: Jul 2006

Posts: 1,826

From: Richfield, Oh

12 BOLT OLDS 'o' tYPE

THIS IS A Oldsmobile site CORRECT?

Gear has been missing for about 3 years now.

12 bolt cover, 10 bolt ring, BOLT IN AXLES is a 12 bolt 'O' type OLDSMOBILE Differential.

12 bolt cover and 12 bolt ring and C-clip axles is always a Chevy rear Differential ...Even if it originally came in a Oldsmobile it is a CHEVY rear.

These gears are for the 12 bolt cover 10 bolt ring 8.5 diameter.
These Richmond gears fit the 3 series carrier (3.08 3.23 carrier)
This is the way Richmond made the 3.42 and 3.90 gears for the 12 'o' type rear.