I have an AAM 14 bolt rear end in my truck. The axle tubes measure 3-1/2" in diameter. That is the sum total of everything I know or can find out about it.
If anyone can post a link to specifications for American Axle & Manufacturing rear axles I would appreciate it.
Of particular interest to me is the axle weight rating. That is to say the axle manufacturers weight rating - not the rating Dodge publishes on the door sticker. That rating is something like 6,000 pounds.
My plan is to put a rather heavy truck camper on. I've already got air bags to help out the leaf springs. I plan to replace the LT tires and 17" wheels by adding 19.5 Rickson Wheels with some killer truck tires pretty quick.
There's no need to over do it though - if the axle itself will only carry so much, so be it.
That about says it - if someone can help me out on the axle weight rating as put out by the manufacturer I would appreciate it.
Pictures with all kinds of weird numbers follow.