Trying to figure out what caused this. SBC wiped out the bearings. Looks as if it started with the #3 main, and worked towards either end. It doesn't look to me like it was an oiling problem, because nothing really got hot except the #3 lower main. I done everything I know to do, and have always done when I put this thing together. I would just like to come up with an explanation before I start putting it back together. This is a mild 383 street engine that doesn't see over 5000 rpm. Was a brand new eagle rotating assembly. This thing also had a very serious blow-by issue that I can't seem to find the cause of either. Engine only had about 5000 miles on it, and it used about a quart of oil every 1000 miles. Is fuel injected with vortec heads. Had pcv as well. Pay attention to the second ring....I'm told that it is supposed to be a tapered ring, but just a fraction of the ring touches the cylinder wall. I was suspecting that this was the cause of the blow-by, but like I said, I was told otherwise.