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hello,
i'm working on a 70 convertible 350/350 4 spd...red/black
and found these chalk marks under the carpet in the rear storage area.
not rpo codes that I can find, I found same type of marks on a 69 convertible N14 which was side exhaust,
but I dont see a "464" or "467" any ideas?
Those are merely production sequencing numbers -- if I remember correctly, it was a very quick visual to tie the in-process assembly to a build sheet order. You should be able to find the same # written in multiple locations. These numbers were not unique to your car or have any code within them. I don't remember exactly, but the sequence ran something like 0-500 and then started all over again. You could have 3 to 5 cars in a single month with the same 464 notation. There wouldn't be any confusion because the separation of the last 464 to the current would be about a week apart and the last car was already out the door.
Much has been discussed in the past about how these worked, my mind just isn't coming up with the details.
Last edited by barkingrats; Mar 6, 2025 at 10:31 AM.
Owen’s explanation of the internal job number usage is correct, however, that’s not what this particular number represents.
For your 1970, the number in this location will be either 437 or 467 which indicates the body style… 437 for coupe (194370S######) or 467 for convertible (194670S######).
The job numbers that Owen described are typically found on the outside (engine compartment side) of the passenger foot well, front, forward wheel well, the rear of the storage compartment (facing the fuel tank), and sometimes the passenger side transmission tunnel (inside passenger compartment). Fact is that most if not all of the major body parts were identified this way, but these are the ones that can be seen easily.
I was curious about these marks. They are under the car ahead of the left rear tire above the diff.
I assumed they are a date. 11/71 as my car is a 12/71 build.
Owen’s explanation of the internal job number usage is correct, however, that’s not what this particular number represents.
For your 1970, the number in this location will be either 437 or 467 which indicates the body style… 437 for coupe (194370S######) or 467 for convertible (194670S######).
The job numbers that Owen described are typically found on the outside (engine compartment side) of the passenger foot well, front, forward wheel well, the rear of the storage compartment (facing the fuel tank), and sometimes the passenger side transmission tunnel (inside passenger compartment). Fact is that most if not all of the major body parts were identified this way, but these are the ones that can be seen easily.
Regards,
Stan Falenski
Hi Stan,
(Not disputing your knowledge here.) What purpose did this number serve? Was it on the floor panel prior to body glue-up so the proper panels were assembled? Otherwise it would seem pretty obvious, to me, which body style I had in front of me if on the assembly line.
Hi Stan,
(Not disputing your knowledge here.) What purpose did this number serve? Was it on the floor panel prior to body glue-up so the proper panels were assembled? Otherwise it would seem pretty obvious, to me, which body style I had in front of me if on the assembly line.
Owen,
That’s it exactly. The floor was laid up prior to any exterior panels being bonded on… It was a quick way for the assembly personnel to check to make sure that they were assembling the correct body style.
I can’t tell you how many Corvettes that I have seen apart over the years, but it has been more than a few. Certainly for the 1968 - 1972 cars, that storage area floor will always have 437 or 467 written on it depending upon the body style.
70 convertible chalk marks
