Mopar 8.75 posi. wont work. Why are there 2 rows of spline?

Yup, that's not the type I originally posted. From your description, it sounded right. Here again, the shop manual is not a hell of a lot of help. They don't even SHOW an exploded view of an 8 3/4 clutch pack. Here's one of a 9 3/4 which is similar

This thread:

http://www.forabodiesonly.com/mopar/showthread.php?t=57471

and here

http://www.moparts.org/Tech/Archive/axle/13.html

"Sure Grip - clutch type

If it's a clutch type sure grip (741/2 casting), there will be "pins" in the hole where the axles go in. I've seen sure grips at swap meets that are missing the pins. They might give you a little hassle finding some but they are avail."












"I just asked DocDiff about the 8 3/4 clutch sequence and yes it is different then the larger rear. Here is his PM he sent me:
OEM clutch pack orientation starting at clutch hub:
1. Flat plate with ears
2. Flat disc
3. Dished plate with ears**
3. Dished disc**
4. Thin flat plate with ears
** Install with ID contacting outer plates (away from clutch hub).
Pre lube clutch plates with straight friction modifier additive.
Torque case-half bolts to 50 lbs with red loc-tite."