Fumblin,
I went through every truck serial number code/symbol that exists from '29 thru '55.2 to test the cruncher. I discovered a couple more errors on the Stovebolt serial/model list (note also to editor). For the 1929 1.5-ton, the symbol should be LQ, not LR. OB is the symbol for the 1933 131" 1.5-ton dually. The list also shows OB for the 1934 131" 1.5-ton dually, but that should be PB. For the '46 early series, the 2-ton COE symbols are listed as OM, ON, OP. Those should be OH, OI, OJ, repectively. Finally, the CM symbol for the early '46 1-ton should be CN. Most Chevy sources have the CL and CN symbols dropped from the early '46 lineup, but they do show up in the '49 Truck Data Book.
A note about post war year designations. The Stovebolt list shows symbols for '44-'45. The Chevy literature doesn't show '44 or '45 model years. Trucks made during the period from 1-1-44 to 8-31-45 used the symbols carried over from '42, including the M* models (which aren't shown in the list for '44-'45), but I don't know if they still called them '42s or what. Also, what is labeled as the '46 interim series, Chevy called '46 first design (from 9-1-45 to 9-1-46). The '46 late series was called '46 second design (from 5-1-46 to 5-31-47). '47 production began on 5-1-47 and went thru 3-31-48. Those dates come from the '49 Truck Data Book, but I'm wondering if the overlap in the dates is correct, or if they are typos. I also have no idea if there are any differences between the '46 first and second designs, or if there was simply a symbol change. The '46 truck resto pack, dated 5-1-46, only shows the '46 second design symbols.
Another interesting thing is that there is no such thing as '47 first or '47 second series. According to Chevy, only the new AD trucks were considered for the '47 model year, while the Art Deco's built in '47 were still considered '46s. Jim Carter even made note of this in his catalog.
I did find one minor error in the cruncher data. The 1952 symbol VL showed as a 4400, when it should be 4500. The rest of the info for that symbol was correct. For consistency in tonnage labeling, you could add the 1.5 ton rating for the COE's from '39 to '42. Also, the '55.2 3500 could be labeled as a forward control.
Would you want to add the 1.5-ton "special" AD trucks to the cruncher?
My sources for the model/series symbols are the '29-'58 and '38-'68 Chevy Master Parts Catalogs. They can also be found
here on Keith Hardy\'s site, taken from the '29-'54 Master Parts Catalog.
