Mopar 8.75 posi. wont work. Why are there 2 rows of spline?
Read this:
http://www.moparmusclemagazine.com/...8_mopar_8_3_4_rear_gear_buildup/photo_08.html
From your description, you don't have the Spicer style clutch type SureGrip but rather the "coil spring" unit. Unfortunately the shop manual handily leaves sevice for these right out of the books!!!
I'd say your axles are TOO SHORT, are not engaging the inner spline which are the side gears, and were attempting to drive the car through the SureGrip clutches, which are now ruined.
Coupl'a photos from the above article:
Read this:
http://www.moparmusclemagazine.com/...8_mopar_8_3_4_rear_gear_buildup/photo_08.html
From your description, you don't have the Spicer style clutch type SureGrip but rather the "coil spring" unit. Unfortunately the shop manual handily leaves sevice for these right out of the books!!!
I'd say your axles are TOO SHORT, are not engaging the inner spline which are the side gears, and were attempting to drive the car through the SureGrip clutches, which are now ruined.
Coupl'a photos from the above article: