I just had some PPG Concept matched to an NOS 216 timing cover and the correct gray from The Filling Station, which was real close to the cover. It's a lot darker blue-gray than the paint offered by suppliers such as Bill Hirsch. There has been lengthy discussions about this at the VCCA website. Chevy probably purchased large amounts of paint from different suppliers over the years so I don't think you could come up with a standard color. Anyways, the number on the can is DCC 36304, Dark Gray.
