Oops, bad math. It's an 82 and from what I've read on this board, it's the worst casting along with some other issues. The pcv valve does rattle freely when I shake it but I got a new one last night anyway along with a new coil. When I got home and tried start it after the new pcv valve, I wasn't getting any fire. After the new coil, wires and plugs, I'm still not getting very weak fire. So now there's a new problem and I can't even tell if the new valve is doing any good.