Mike, I saw that you said that in another post. The internet and my memory say they had, what some call, serial numbers, stamped alpha/numeric, on the pad. Are you sure about stopping in 1956? The NastyZ28.com site, I always use, calls them "Engine number suffix codes". Goes way past 1956. This is the info we are all talking about. I call them serial numbers. Call them what you wish, the point is they give the info of the motor if the motor still has it's original parts. Year, CID, Application, HP, Engine VIN, BBLS, GM Body/Comments. Maybe serial number is the wrong word but the "stamp" is the subject. Your knowledge on this is appreciated.
