Another FYI, for anyone stumbling upon this forum... The sloppy shifter on an SM465 is a pretty simple fix. GM used a collar to join the shifter handle and the snout that engages the shift forks inside the transmission. On the shifter side, the collar is held on by 2 spot welds that are commonly known to break. On the other side, they used a nylon sleeve with a roll pin to help reduce NVH in the cab. Over the course of 50 some odd years, the nylon sleeve on mine had completely disappeared.
The shifter side is pretty simple, grind off the failed weld and weld them back together. For the snout end, you can try to find a nylon sleeve that will fit in there, but my plan is to just weld them together, since NVH isn't really a concern to me... I have what I'm pretty sure is the loudest exhaust known to mankind short of a top fuel dragster, none of my window or door seals seal, and it's never going to sound/feel like my BMW, so why try?
I'll link a couple videos in a little bit too illustrate the issue.
The shifter side is pretty simple, grind off the failed weld and weld them back together. For the snout end, you can try to find a nylon sleeve that will fit in there, but my plan is to just weld them together, since NVH isn't really a concern to me... I have what I'm pretty sure is the loudest exhaust known to mankind short of a top fuel dragster, none of my window or door seals seal, and it's never going to sound/feel like my BMW, so why try?
I'll link a couple videos in a little bit too illustrate the issue.

