not sure what 10 bolt i have but i found these numbers on the rear (GM 65) (8969277NF) (CON2) (K151) (67890) i found those on the center section, theres also a set of numbers on the axle tube but that could be hard to figure out since i already por15'd it anybody out there know these numbers o No:
from what i get from this site http://www.oldsmobility.com/10bolt-tech.htm it would be type O with parrellel ribs and a oval cover with no cut in's where the axle tubes are, and the cover is smooth with the buldge for the ring gear, also on the yoke it has the bolts with straps (doesn't have the U-shaped block) it also has c-clip axles will that help o No:
You have a Chevelle/Monte Carlo 8.5" axle from 1971 or 1972. Good for you since you can find the 8.5" posi units in many GM full size wagons from 80-88 and some trucks.
actually it has the posi already in it, and it seems to be good, couldn't turn the wheels holding the yoke, thanks george
Chevelle used the 8.2 Chevy rear through '72 in lower torque applications. If it's a 10 bolt rear & original in a '70-72 Monte/Chevelle/or Elco it should be an 8.2 Chevy c-clip rear. A very few late '72 Elco's recieved bolt-in axle 8.5 rears & they recieved a shorter driveshaft from the factory to make this set-up fit. 8.5 c-clip A-body rears were not used until '73 models in Chevrolet products & in occasional Pontiac A-bodys when plant ran out of certain ratio bolt-in axle 8.5 A-body rears. :3gears: Roger
