torque specs

Fastener Foot-Pounds

Axle Shaft Nuts (tapered axle end nuts) 145 (min)
Brake Support Plate to Housing Mounthing Bolt Nuts 30 to 35
Differential Carrier to Axle Housing Bolt Nuts 45
Rear Axle Drive Gear to Case Bolts 60
Differential Bearing Cap bolts 90
Rear Axle Drive Pinion Companion Flange Nut 240 (min)
Rear Spring "U" Bolt Nuts 50

Everything You Ever Wanted To Know About The 8 3/4 Axle
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What about shackle to frame?