Originally Posted by ESum
I have a couple of questions. what is the correct engine color? The two studs in the exhaust manifold that the intake seats on that are just in front of and behind the carburetor are they threaded into the exhaust manifold or pressed in?

The 1966 C10 250ci truck engine should be Chevy blue. Don't know the answer to the last part. I doubt they are threaded but someone else should know.