Hey Iamdumb, I'm dumber, I did not look as closely as you!
I tend to investigate and document the not-so-common mods. So, I take pics and measurements of a lot of critical points. There will always be newbs searching for info as we all did before and still do now.
Did Not Notice the larger holes. If they were to loosen, I am guessing belt tension would pull it down, and the alternator would tend to sit down by it's own weight anyhow. I loosened the bolts, and put a prybar between case and bracket. about 2mm of movement fwiw. I don't think it will loosen.
The wider holes are to the back, so, I think once the bolts are tightened, there's more than enough clamping force to keep it from sliding. It'd actually have to twist and there's no space for that. I'm just a bit extra with some things and making those sleeves was a quick little side project. It'll be perfectly fine as-is.
Did Not Notice the alt cable was a tower bolted to the rear, but it sits fine on the tower so I think I will leave that as well.
View attachment 399536
I would've used that tower piece if I hadn't destroyed it while attempting to modify it. That D-shaped area directly under the tower is a cover. Pop it off and you'll see a stud and 10mm nut oriented horizontally like the original alt had, just annoyingly recessed.
Good Job on the install Iamdumb!
Likewise!
I think our alternators are the same.
I think so, too. GM is known for seemingly randomly changing part numbers for the exact same part. Could even be where the alt was made/sourced.
I still consider these alternators to be "drop in". Only thing really needed is the larger cable nut.
Agreed. I just get in my own way. A lot. No ragerts.