Check out this free site of online chevy manuals maintained by Keith Hardy. Go to the 1929-54 Chevy Master Parts and Accessories Catalogue. On page 97 (engine section) look for cylinder block expansion plugs.

If I have misinterpreted your question. Keep looking around in the catalogue. You should find your answer.


http://chevy.tocmp.com/index.htm


"Nothing astonishes men so much as common sense and plain dealing." - Ralph Waldo Emerson