Topic: VIN for 1940

40cabriolettony    -- 09-05-2022 @ 11:16 AM
  Hi All, I cannot locate a vin number near the steering box, however I did find one below the horn next to the water pump on the rail, it is 5756494 which matches title. Did not find any numbers beginning with 16 or 18. Any thoughts? TIA

alanwoodieman    -- 09-05-2022 @ 11:19 AM
  did you find a 6 point star? if not go back and clean the frame some more, the number can be anywhere from the front crossmember to the fire wall area on frame

40cabriolettony    -- 09-05-2022 @ 11:28 AM
  Will try that, thanks

40cabriolettony    -- 09-09-2022 @ 2:39 PM
  can't seem to find it - I think I should be looking for an 18 as it is a deluxe cabriolet

kubes40    -- 09-09-2022 @ 3:30 PM

There is no such thing as a 1940 Ford cabriolet. What you have is a 1940 Ford Convertible Club Coupe.

It does appear you'd located the serial number, albeit not in its entirety. It is, after eighty plus years, typically hiding beneath paint, rust, etc. and as such, can be difficult to locate.
As Alan had advised in a previous post, there should be a star, followed by 18, a dash, and then the serial number followed by another star.

Mike "Kube" Kubarth

carcrazy    -- 09-09-2022 @ 4:54 PM
  The number you found places the engine build date within the month of May, 1940. The engine was probably completed on May 12th or May 13th. The lack of the stars and the "18" prefix number is puzzling.

kubes40    -- 09-09-2022 @ 6:02 PM
  Wow! I'd sure like to understand how you had managed to narrow down the build date of the engine / trans assembly to within two days (approximate).

I have some (read: not complete) engine logs but certainly not enough to do what you have done.

Mike "Kube" Kubarth

carcrazy    -- 09-09-2022 @ 7:57 PM
  Here was the reasoning I used to come up with the engine build date. Some assumptions were made so these dates must be regarded as a "calculated guess". Here is the data available from published Total Production records for 85 Horsepower Engine Build Dates:

From Date Beginning No. To Date Ending No.
May 1, 1940 5729320 May 29, 1940 5792910

The no. of the engine in question is 5756494.
The total number of engines built between May 1 and May 29 is 63,590
Dividing the total number of engines built by the number of build days yields 2,193 engines per day.
Assumption #1: Approximately 2,193 engines were built each day between May 1 and May 29.
Assumption #2: Approximately the same number of engines were built on each of the days in this period.

Subtracting the beginning engine no. for May 1 from the no. of the engine in question yields 27,174. Dividing this number by 2,193 (no. of engines built per day) yields 12.39 days.
This falls between May 12th and May 13th

Do you think this reasoning is logical?

kubes40    -- 09-13-2022 @ 5:31 AM
Yes, I think your formula is logical. Accurate? Not so sure.

Mike "Kube" Kubarth

40cabriolettony    -- 09-20-2022 @ 7:13 PM
  2 great things - it is a Deluxe and since I own it now I christen thee a Cabriolet.

kubes40    -- 09-21-2022 @ 8:58 AM
  You can call it a Buick. Doesn't make it so.

Mike "Kube" Kubarth

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