1975 Early or Late Model
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Not a definite cut off that I've heard of. Early or late would depend on when the early parts ran out and the assembly line started with the late ones. Not all the early parts ran out at the same time, wire harnesses for the seat belt starter interlock might have ran out at one date and some other "early" part on another date from what I understand.
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Not a definite cut off that I've heard of. Early or late would depend on when the early parts ran out and the assembly line started with the late ones. Not all the early parts ran out at the same time, wire harnesses for the seat belt starter interlock might have ran out at one date and some other "early" part on another date from what I understand.
Last edited by Jon Hekking; Mar 24, 2019 at 07:00 PM.
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...I like to think of this as "early, mid & late" production seeing how they made so many. I used to have a '75 coupe, #35026(last five digits of the VIN #) which was built July 10 of 1975. So, out of 38,465 built, it was a very late car. Used to own '68 coupe #14222 and out of 28,566 cars, it was almost in the exact middle to the day in production. My '74 is #01950 and was built 9-11-73, so it's a very early car.
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Character Position Code Significance
1-2 1Z Chevrolet Corvette
3-4 67 Convertible
3-4 37 Coupe
5 J Base Engine
5 T L-82 Engine
6 5 Last Digit of Model year
7 S St Louis Assembly Plant
8-13 6 Digit Build Sequence Number
https://www.c3registry.com/index.php?job=BirthdayCalculator
Character Position Code Significance
1-2 1Z Chevrolet Corvette
3-4 67 Convertible
3-4 37 Coupe
5 J Base Engine
5 T L-82 Engine
6 5 Last Digit of Model year
7 S St Louis Assembly Plant
8-13 6 Digit Build Sequence Number
Last edited by pmr2000; Mar 26, 2019 at 03:47 PM. Reason: typo
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FWIW: "early" and "late" usually refer to running changes made on the assembly line during the production run. As an example, if a part was changed during the run, early cars had the original part and "late" car got the new part.
Page notes in the assembly instruction manual (AIM) will sometimes show part number changes and a date the AIM page was revised. This could be a clue to a production change date but is not ironclad.
Page notes in the assembly instruction manual (AIM) will sometimes show part number changes and a date the AIM page was revised. This could be a clue to a production change date but is not ironclad.
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My 75 coupe last 5 are 07743, that's about Dec 14th of 1974 i think.
When did they start making 75s ? If they got to 7743 by mid December.
When did they start making 75s ? If they got to 7743 by mid December.
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