thanks to Tim's Trucks website: my block# is 3733950 and head# is 3836850, serial number is W540002869. And thanks to Jim Carter, I have green engine paint in the mail. I have the head off and figured I would paint as I put things back together. There has been a lot of oil, mud, and dirt/rust on parts, so I am using a puddy knife and wire brush on a drill to clean parts before reassemble. I still don't know if I can get it running, but figured to paint parts. what is proper method? how many coats? is a primer needed with engine paint?