[David_Hayward (RIP)]

Don't get me started on this! It causes my numiscalcula! After 1933 Walkerville Transmssion Plant split engine # allcoations up into batches, as against the US Flint Motor Plant's sequential series. However Flint changed that when the 1937 216 came in, with a new series starting again. Walkerville did likewise, but then moved to a new system in 1946 Model Year after the Auto Workers' Strike was settled. Then you have different series for 235, 224, 248 engines...with different prefixes! I maintain my database which quotes published engine # and serial # data and then on actual vehicles' numbers. It is not perfect and never will be but it enables me to see that there was a lot of changing-around of numbering systems in GM of C!