Join Date: Feb 2010
Location: Virginia U.S.A.
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This is a Pontiac, MI plant only thing. The other plants that built Pontiac cars did not use this number.
I will give you some more info on what I think it is but there is nothing to back it up. I think this number was on the passenger broadcast sheet from the early 60s to 1964. This number was under the title of SOS. Not sure what it means (I think, special option station) but some of the 62 and 63 super duty cars had these higher numbers. The red car that was used in the famous 1964 Car and Driver had a number 6 in this SOS title and these numbers refer to some kind of station where they were built and might have put these numbers on the cowl tags as well (the number in question that the original poster asked about). PON plant carried on with the number on the cowl tags but no longer had the SOS on the build sheet by 1965.
1 & 2 = The average build car.
5, 6, & 7= Special order request cars.
Again just my theory.
Last edited by Roger that; 01-13-2015 at 04:54 AM.