Re: Axle ID\'s
Well, it only counts on GM axles.
The best way to identify them is by case shape.
There are a bunch of different GM 10 bolts.
Then there is the BOP 12 bolt, car 12 bolt, and truck 12 bolt.
Next there is the 14SF 14 bolt, and the 14FF 14 bolt.
We're not talking about the newer 14 bolts either like the 11.5" ring gear one.
There are other axles like the 9 bolt used in thirdgen f-bodies.
As a side note, as far as older full size Chevy trucks they didn't use many axles.
The first one was the Eaton rear axle. It looks like a Furd 9" but much bigger. You've then got the 14FF, 14SF, and the Dana 70. As you go smaller you've got the 12 bolt and then the 10 bolt.
In the front they used the closed knuckle Dana 44, the closed knuckle Dana 60, the open knuckle Dana 44 (3 different hub variations), and the 10 bolt.
I hope that didn't confuse you too much.