It was a rod bearing. The squeak was the bearing and the knock was actually the bearing, it has slipped and was knocking on the crankshaft / rod. In the 3rd pic you can see the folded edge that was catching.
Hi Everyone,
I just wanted to share a video of the sound of a spun rod bearing. I know I really struggled to identify it until I tore the engine down.
This sound started randomly on a drive and I immediately shut it down. But the damage was already done. The crank shaft was toast.
K1500 350...
Just thought I'd share this video of my truck with a spun bearing.
I know I wasn't sure if that's what it was until I tore the engine down. Maybe it will help the next guy "know" right away.
K1500 Spun Bearing
I purchased another 350 and did a light rebuild and swapped it out.
As others...