In Reply to: Re: FoMoCo LOGO -When? posted by Tim Daley(MI) on August 27, 2018 at 09:31:54:
I'm not sure if "C" designates the sixties unless Ford used different part number procedures for tractors vs vehicles. When I was at Ford, 1965 to 1973, I was a production supervisor in the heater-A/C production. Part numbers in that area started with C. Why? I don't know. The next digit in 1965 was 5. In 1966 the second digit was 6. In 1967 the second digit was 7.
Now, if an internal part was a carry over from the first year it was released it retained the first year designation. A C5++ (+ just a place holder for my explanation) might be used in a C6 or C7 vehicle model year assembly.
From there the next two digits/letters designated the vehicle product line. So, a C5TA (1965) was a truck part. A C5AA was particular carline part number. Then there was a C6OA was a new model car in 1966.
Following those digits were numbers and letters designating the type of part: ie, a heater door was a ++254A in some models and a ++254B in others depending on the handle welded to it for the mechanical operation. Similarly, defroster doors were ++478A or B or C, again depending on the lever welded to it for the cable operation from the dash. (remember those?)
That's my story and I'm sticking to it. Clear as mud? LOL