How to ID a 12 bolt rear end?
 

Hi,
I have a 12 bolt rear end from a Chevelle or something similar that I am thinking I might want to part with.
How do I identify it and figure out the date codes and stuff? https://www.yenko.net/ubbthreads/imag...s/confused.gif
Thanks, Joel

Re: How to ID a 12 bolt rear end?
 

As well as what this diagram shows,relay all the letters and numbers lightly stamped in the passenger side axle tube usually facing the floor board,or front end.
The casting date & CON1 locations have been found to interchange between those locations shown,and also at the 4 O'clock & 8 O'clock positions.
http://i159.photobucket.com/albums/t...lecastdate.gif
[i]Drawing Courtesy of Camaro Research Group)

Re: How to ID a 12 bolt rear end?
 

Hi Joel, see if this helps.

General info.....

http://www.chevellestuff.com/qd/gene..._axle_info.htm

Axle codes....

http://www.chevellestuff.com/qd/axlecodes.htm

Everything you ever wanted to know about Chevelle rear ends (well almost). https://www.yenko.net/ubbthreads/imag...mlins/flag.gif

Re: How to ID a 12 bolt rear end?
 

Thanks guys! https://www.yenko.net/ubbthreads/imag...lins/smile.gif
I'll be checking it out this weekend to see what it is.

Re: How to ID a 12 bolt rear end?
 

Good info Joe Brown. Thx

Re: How to ID a 12 bolt rear end?
 

The first thing I look for is the taper on the tube behind the flange. Chevy uses press in bearings. B O P tubes are straight. Bolt in axels.