How to ID a 12 bolt rear end?

[Hemi_Joel]

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? http://www.yenko.net/ubbthreads/images/graemlins/confused.gif
Thanks, Joel

[Mr70]

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/t142/peterspix_2007/rearaxlecastdate.gif
[i]Drawing Courtesy of Camaro Research Group)

[John Brown]

Hi Joel, see if this helps.

General info.....

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

Axle codes....

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

Everything you ever wanted to know about Chevelle rear ends (well almost). http://www.yenko.net/ubbthreads/images/graemlins/flag.gif

[Hemi_Joel]

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

[H8tulooze]

Good info Joe Brown. Thx

[RPOL88]

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.