12-Cab C60L & More

[aj.lec]

Thanks David
seems strange they started with 7 digits and dropped back to 6 later on

Here is a photo Phil couldnt see casting number at the time ,I will look a little later

[Phil Waterman]

Hi Andrew

Your picture shows what I was wondering about the alignment of the numbers which is not as even as have seen on most of the Chevy engines that I have seen, makes me wonder if it was not punched at the factory. It will be interesting when you disassemble the engine to see if the number under the side cover is the same.

Cheers Phil

[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!

[aj.lec]

Hello David
I discovered your site today ,very interesting and a great resource .Thanks
I was checking some of the trucks versus numbers and was a little suprised when i discovered one of the motors i have here was only one digit different to one listed .mine being wr3943037 and list being wr3943036 as a c15a july 31 1944 sydney assembled

[David_Hayward (RIP)]

This is quite amazing! If you can imagine, 60 + years later two engines have turned up that were built within a few minutes of each other at Walkerville! However, I seem to recall I have found similar examples before but will check.

A quick study of my database has:


WR3943037
38444S0364 ENGINE WR3943036 ORDER W.O.8 S-M0E52-446 JULY 31 1944 [SYDNEY ASSEMBLED]
3844326725 ENGINE PR3943506 CDLV 1515 NOVERMBER 19 1943
3844326798 ENGINE PR3943551 CDLV 1515 NOVEMBER 22 1943
3844031469 ENGINE WR3947470 C.D.L.V.1798 FEBRUARY 23 1944
3844032286 ENGINE WR3949573 C.D.L.V. 1798 MARCH 8 1944

[David_Hayward (RIP)]

From my notes (excuse caps.)

“R” [CAR] “AR” “CR” “FR” “PR” “SR” “TR” “WR” “ZR” WITH THE “R” FOR R.H.D. MOTORS AND ALSO “TRA” AND “TBA” AND “TBRA” IN 1940 FOR “TRUCK, RIGHT HAND DRIVE, ARMY”; “TRUCK, BUFFALO -ASSEMBLED, ARMY” AND “TRUCK, BUFFALO-ASSEMBLED, ARMY, RIGHT-HAND DRIVE” WHEN “B” FOR “BUFFALO” RERESENTED THE TONAWANDA, NEAR BUFFALO, NEW YORK STATE, ENGINE PLANT. THERE MAY ALSO HAVE BEEN “TR” ON ½ TON GMC TRUCKS,

[aj.lec]

c8 engine before it went to the machinist
One sleeve required -no guesses for which one