Grinding, " diesel " noise under valve covers

My pulley set up is kinda Frankensteined, the car aint, but all the parts I've gotten are from here and there. And that's a Blessing! But with the alt belt on, so is the WP.... .and the Original a/c pulleys of a 66 273,. They got more shake and jive than a small town hustler. Well, not really. But they have run out. They were sparking when I first built it. Self clearanced. Converter and flex both got blue locktite and a TQ wrench .hell, I put that thing on anything I can. I may wait till the morning, when I can see...