Name this engine noise, can't be good!

Have you verified the thrust main isn't out? Had it happen more than once.

Also, had a friend wreck his B body car years ago. He wanted to put a new converter in it. I said and I quote "make double damn sure you use RED LOCTITE on those cheesy assed converter bolts...they WILL come loose and bite you in the can if you don't".

Converter is in and all is well. Looking at the plugs, I can see the engine wants more ignition. So, I order a box for him.

Two days after the box goes on, a knock develops. He thinks it's the box. So we bolt the old ignition back on. Still knocking.

Then he decides a bolt got dropped into the carb. How he figured that I've never discovered. This is 1991 and he still, to this day has never explained that bone headed thinking.

Now, both heads are off. I swing by his house after work and he has the pan off and half of the Pistons and rods out. I'm thinking WTF is going on? So I climb under the car and start looking. Nothing is wrong.

So I say to him turn the crank a couple of times so I can have a look. Turing the crank by hand I can hear the clunk. It's coming from the converter. The little bolts are loose. Like socks on a rooster. WTF???

To this day, he swears up and down he used red LOCTITE. We all know he didn't, because when I told him to use it and asked if he had any, he said no but I'll get some. I offered to loan him mine but no, he wanted his own. When he didn't ***** about the cost of a little tune of red LOCTITE I should have known he didn't use it.

So how did the car get destroyed? Easy. It was all apart and sitting in his garage. Where the washer and dryer were. They were on an inside wall, so the exhaust for the dryer went up the wall, across the ceiling and to a vent on the outside of the garage.

His wife told him the exhaust hose had fallen off the dryer, but he blew it off. A few months later he went out and went to out it back together. It was one giant pile of rust. Every machine surface was rusty, and I mean junk rusty. The master cylinder and everything else cast iron was covered in rust.

At that point, he sold the car for next to nothing. What a waste.