rear end ID - Impala Tech
Tag Team De-coding tags & numbers

LinkBack Thread Tools
post #1 of 4 (permalink) Old 10-20-2007, 07:05 PM Thread Starter
Join Date: Oct 2007
Posts: 2
rear end ID

DH0621B--also has an 'E' just underneath the serial number?
currently in a 65 impala ss
1) is this an original 65 rear end.
2) can anybody identify the 'DH' ratio code?
3) is it a posi?
bikesrususa is offline  
Sponsored Links
post #2 of 4 (permalink) Old 10-21-2007, 09:52 AM
Join Date: Jan 2006
Posts: 12,456
As to question number three the casting numbers on the case will identify if it is a Posi or open rear end. For a twelve bolt Posi-traction rear end with two series gears the casting numbers are ED 32088, for three series gears the numbers are 30140PM1, and for four series gears the numbers are EDB 30174. For a ten bolt housing the Posi-traction numbers are ED32118 for two series gears and EDB 30116 for three series gears (there isn't a four series posi carrier for a ten bolt).

My Colvin "Chevrolet 1965-69; by the numbers book" shows the DH code translates as a 3.31:1 gear with a Dana (as opposed to the Eaton) Posi-traction rear end designed for Heavy Duty use which was defined as the high horse power 327, or a 409/396 engine combination, or for use under a station wagon.

Your rear end was made at the Buffalo, N.Y. plant on June 21, 1965, and the E under the number means the Eaton Posi-traction mechanism was substituted for the stock Dana posi.

The 3852980N should match the VIN of the car, if it is a numbers matching car.

Big Dave
Big Dave is offline  
post #3 of 4 (permalink) Old 10-21-2007, 01:31 PM Thread Starter
Join Date: Oct 2007
Posts: 2
dave: thank you for the quick response,i appreciate ya.
bikesrususa is offline  
post #4 of 4 (permalink) Old 10-22-2007, 11:49 AM
Join Date: Jan 2006
Posts: 1,030
The 331 gear is the best ratio I have found for all around driving. Sounds like a keeper.

Never pay again for live sex! | Hot girls doing naughty stuff for free! | Chat for free!
1964 Impala Dude is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Impala 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:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


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

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