12 bolt rear end codes? - Chevelle Tech
Transmission & Driveline Transmissions and Differentials

 
LinkBack Thread Tools Search this Thread Display Modes
post #1 of 4 (permalink) Old Mar 22nd, 09, 3:58 PM Thread Starter
john
 
Join Date: Mar 2009
Location: tx
Posts: 6
12 bolt rear end codes?

I have a 12 bolt rearend that im rebuilding and converting to a possi. I have sand blasted it removed all the bearings and gears. The codes on the rearend are CKD 0826B, GM52, 3969278NF, H48, CON1, E stamp under cover, 1234567890. I have surched the Internet and the 3969278NF is supposed to be a 71-72 but date code dosent match. Please help make sense of this because im confused.
Thanks
John
ripper1711 is offline  
Sponsored Links
Advertisement
 
post #2 of 4 (permalink) Old Mar 22nd, 09, 4:08 PM
Lifetime Premium Member
& Administrator
 
Join Date: Apr 2005
Posts: 15,820
Re: 12 bolt rear end codes?

Appears to be from a '70 per the info I've got.
The 3969278NF was used '70-'72.
Your code CKD was '70.
Possible that the 8 in the H48 is a 0 ??
Mike is offline  
post #3 of 4 (permalink) Old Mar 22nd, 09, 4:21 PM
Lifetime Premium Member
Terry
 
Join Date: May 2001
Location: Victoria B.C. Canada
Posts: 2,662
Re: 12 bolt rear end codes?

That casting nimber was used from 70-72 but chevellestuff.com shows that your rear is a 1970, because that is the only year that shows a CKD code. Meaning it was a 2:73 ratio.
08 means the 8th month, 26 is the date and B means it was built at the buffalo plant

Terry

ACES # 5021
Experience is something you don't get until just after you need it.
bcice is offline  
post #4 of 4 (permalink) Old Mar 22nd, 09, 4:57 PM Thread Starter
john
 
Join Date: Mar 2009
Location: tx
Posts: 6
Re: 12 bolt rear end codes?

i think its a 9 the 8 9 look close alike but not a 0 diffently
ripper1711 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Chevelle Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address. Note, you will be sent a confirmation request to this address.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome