I bought this truck in 2015 knowing it had this pop that happened sporadically. It did it while I was test driving it, but I figured having extra parts from other '65 3/4 ton's laying around that I could fix it. I have replaced engine mounts, bell housing mounts, complete front suspension including a front disc conversion. Replaced u-joints, cab mounts, core support parts. Rebuilt the transmission. All of which did not eliminate the pop. We have taken this truck on numerous 1,000+ mile trips and nothing leaks or overheats. Just the pop that can happen in succession, or not at all for many miles/days, and then all of a sudden it happens. It will cause the truck to veer a tiny bit and then it corrects on its own. I was thinking the trailing arms, but those are tight, cannot get them to budge with a big pry bar. The only thing I can think of is the rear axle.
Would the "No-Spin" device do this? I have replaced the gear oil in the axle and there was no shavings, nothing out of the ordinary. I did pour in good heavy duty gear oil and limited slip additive when I sealed it back up.
Could it be jumping a tooth or something. When it pops it is loud and if you're in deep thought it'll startle the crap out of you. I just bought an old gopro and am trying to source a proper mount that I can secure to the frame in hopes of catching it happening and then seeing it on video. But have any of you experienced gentlemen had this happen in one of your trucks with an HO52? I am at a loss. I can't see any loose or missing rivets, no odd coloring at the cross member/frame connection points like things are shifting around. I am baffled on this one.
Last edited by DoubleDingo; 08/14/2020 10:59 PM. Reason: Corrected it to "No-Spin" from "No-Slip", and corrected some grammar
