I checked my axel again and found the following. On the left frontside of the differential housing I found large letters "GM 60". On the left top backside of the housing I found the letters "CON" and the numbers 1234567890 under that. Does the "CON" have anything to do with the gear ratio? Jim ________ Burgman
that rear end must be out of a car because i can not find anything on those numbers you may want to call inland truck parts at 1-800-892-5806 they might be able to tell you what it is from or who to call to figure it out.
