[1968k10blue]

okay, but I have another question you may know. I read that there are some locking hubs that if you put the vehicle in reverse while they are engaged and the transfer case is in 4wd that they will automatically unlock. do you know if this was the way they were in that era? because I have a steep gravel driveway so I thought I would try to spin both tires to see if the 4wd worked(it is a new truck to me) and when I found out it didn't work I backed down the driveway and I heard a clicking and the truck was jerking backwards. I recently found out that this was once a feature and I never checked to see if either one was disengaged, so do you have an answer to this?