Marlin, This is a subject I've been looking into for quite a while. I live near Flint and know a guy that painted these engines for thirty years (now retired) he went into detail about what was on the engine at the time of painting. The only mask was on the valve covers, the intake got hit front and rear and at the end of the line there was a guy with siver pait and a brush touching up the intakes. I didn't touch my engine at all and have silver paint front and rear and several intake bolts.
