Hey everyone, after tons of useful reads on here, Im finally writing my first post. I have a 86 K10 with a 305, Which i think is original, and its not sounding too healthy. I have this noise i cant diagnose. Can anyone tell me what this could be? Where is this noise coming from? I just replaced the fan clutch, thinking that was the issue, but no dice. Still awful noise. Stethoscoped everything I could and didn't find the cause. Any help would be amazing. Thanks!
Here are links to some videos of the noise...
https://youtu.be/OTk8F-2MmPQ
https://youtu.be/W2-TXK704Ko