So it is definitely a 1/2-ton Chevy rear-end then, not a GMC. Well it looks like my entire drive train is not original. Is there any thing note worthy about this rear-end good or bad? One thing I noticed when I had it out of the truck is when I turned the pinion shaft to check the ratio I was able to reach over and stop the axle from turning on both sides one at a time. This makes no sense to me. I would think the the gears would be coupled and if I held one axle I should be able to stop the pinion shaft from turning. The one thing I was not able to do, since I do not have three hands is to see if while I was turning the pinion shaft and holding on axle if the other axle was now coupled. Can anyone explain this to me? Thanks.

Jim


1954 GMC 1/2-ton Longbed
1971 Pontiac LeMans Sport