Yeah apologies for no pics I'm in Africa working, I know it's a 12 bolt truck axle it has the odd shaped cover, I can't seem to find out what the truck had originally if the 12 bolt didn't get introduced until 65??
I'm planning on changing the oil when I get home so hopefully I'll get numbers etc of the ring gear
HO33 / HO35 corporate G.M. was used thru '62. Round cover on rear, carrier housing bolts in from front, same shape a rear cover. 12 bolt, 8 7/8" ring gear axle came out in '63, has no removable carrier housing.
BC 1960 Chevy C10 driver 1949 GMC 250 project in waiting G.M dealer tech since 1980 & counting
Check the width of the rear axle from inside backing plate to the other backing plate. I’d be interested in what you get.
I’m currently parting out a 1961 C10. As I examined things, I noticed that the rear axle wasn’t original to this 1961. The X part of the X-frame makes contact with the rear swing arms with any load on the frame. The rear springs do not line up with the frame properly either. I know that the rear axle I have is 1966-72 because of the park brake cable brackets.
What I’m getting at is that a 1963-72 rear axle is not likely gonna be a direct swap into a 1962 or earlier X-frame. Can anyone tell me if the 1967-72 rear axles were the same width as the 1963-66?