My 1954 Chevy 3600 - 235 engine is painted with
Bill Hirsch Chevy Grey enamel . Excellent quality and most will
agree that the color is as close to the original as you are
going to find .
Link to the Hirsch website .
http://www.hirschauto.com/ENGINE-ENAMEL/productinfo/EE-QUART/Scroll to the bottom of the page & see the questions & answers
about this paint .
' 54 3600
George