| |
Click on image for the lowdown. 
====
| | | Forums66 Topics128,175 Posts1,057,054 Members48,460 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Nov 2007 Posts: 11 New Guy | | New Guy Joined: Nov 2007 Posts: 11 | can some tel me where i can fine a webpage on the rear axle code or ratio is on my 63 pickup any help thanks alot | | | | | Joined: Jun 2005 Posts: 1,756 Shop Shark | | Shop Shark Joined: Jun 2005 Posts: 1,756 | | | | | | Joined: Sep 2003 Posts: 324 Shop Shark | | Shop Shark Joined: Sep 2003 Posts: 324 | I think that the standard gear ratio for that year was a 3.90 if memory serves me correctly. | | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | 3.73, 3.07, and 4.11 are the listed options. There is a 3.90 listed as well, but I beleive that it may either be for the 4x4 option or possibly the Positrac option. The plant listed for the 3.90 is the Detroit gear and Axle (Eaton) instead of the Warren plant for the others (12 bolt).
Bill Burmeister
| | | | | Joined: Sep 2003 Posts: 2,384 Shop Shark | | Shop Shark Joined: Sep 2003 Posts: 2,384 | In half tons(C10),the 3.07 was the economy six option, 4.11 was usually used w/3 spd/OD, 3.73 is the most common. The code should be stamped on top of the pass side axle tube.
Last edited by 64fleetside; 11/07/2007 12:27 AM.
| | | | | Joined: Nov 2007 Posts: 11 New Guy | | New Guy Joined: Nov 2007 Posts: 11 | hey thanks to all the answer i got i did fine a code stamp on it
it is hc1024n2
e this what i found not sure how to read it but that is what is stamp on it thanks again for the info | | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | Comes up as a '65-'66 3.73 axle according to my info. Perhaps it's been changed by a po?
Bill Burmeister
| | | | | Joined: Nov 2007 Posts: 11 New Guy | | New Guy Joined: Nov 2007 Posts: 11 | hey thanks for the info is there a web page u fine this at ?? sounds like a good highway gear .thanks again
| | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | I've got a spec book handy that I look it up in.
Bill Burmeister
| | | | | Joined: Nov 2007 Posts: 11 New Guy | | New Guy Joined: Nov 2007 Posts: 11 | thanks longbox55 i have a extra rearend in the shop when i fine time i,ll look it up and send it to u if that is ok thanks u sir for your help.guess i need a book like that | | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | It's the Catalog of Chevy truck ID Numbers, 1946-1972. Published by Cars&Parts. It is still in print. I got mine from WaldenBooks. It's alright by me if you can get the codes, I can break them down for ya!
Bill Burmeister
| | | | | Joined: Nov 2007 Posts: 11 New Guy | | New Guy Joined: Nov 2007 Posts: 11 | ok cool that be nice sure thank u for the help u gave | | |
|
|
| |
