Originally Posted by prostreet6t9
To measure correctly you will need to put a loaded center section into your housing. Run a tape down your tubes and hook it on the inside of the side gear. Measure to the lip in your housing end that the axle brg seats against.
Then you can measure your axle from the tip to the inside of the axle brg.
When I measured I ran the tape in till it bottomed out on the carrier pin and measured to the outside of the housing end. My bearings are flush with the outside of the housing when they are all the way in. The GM backing plates are now my bearing retainers. It could very well be that one of my axels is still to long.