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Old Jul 25, 2012 | 11:46 AM
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Default Build date code

I've seen conflicting info as to the correct month code for build. I've always assumed Aug. to be the first month of production and therefore assigned "A" in the coded sequence. I've also seen Sept. as first month and designated "A". What's the definitive answer?
Old Jul 25, 2012 | 11:55 AM
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Depends on what model year car you're thinking of.
Old Jul 25, 2012 | 12:16 PM
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Originally Posted by Mike Ward
Depends on what model year car you're thinking of.
Also depends on where the body was built
For C2 Corvettes there is this info:

1963 A is September 1962 for St .Louis bodies
1964 A is September 1963 for St. Louis bodies, A is January 1964 for AO Smith bodies
1965 A is August 1964 for St. Louis and AO Smith bodies
1966 A is September 1965 for St. Louis bodies and A is August 1965 for AO Smith bodies
1967 A is August 1966 for St. Louis and AO Smith bodies
Old Jul 25, 2012 | 01:08 PM
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My bad, you'd think I'd learn by now....1967. St. Louis.
Old Jul 25, 2012 | 01:19 PM
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Originally Posted by drlou
My bad, you'd think I'd learn by now....1967. St. Louis.
No problem
Your 1967 starts with build date code A for August 1966 (same that year for both St. Louis and AO Smith bodies)
Old Jul 25, 2012 | 02:03 PM
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Originally Posted by velox
also depends on where the body was built
For c2 corvettes there is this info:

1963 a is september 1962 for st .louis bodies
1964 a is september 1963 for st. Louis bodies, a is january 1964 for ao smith bodies
1965 a is august 1964 for st. Louis and ao smith bodies
1966 a is september 1965 for st. Louis bodies and a is august 1965 for ao smith bodies
1967 a is august 1966 for st. Louis and ao smith bodies
i believe that a o smith bodies didn't start building bodies until the month of september 1965 for 66 corvettes which makes b the correct month for build dates. St louis started in august of 1965 for building. Does anyone agree or disagree?
Old Jul 25, 2012 | 06:41 PM
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Originally Posted by maggiesadie8525
i believe that a o smith bodies didn't start building bodies until the month of september 1965 for 66 corvettes which makes b the correct month for build dates. St louis started in august of 1965 for building. Does anyone agree or disagree?
AO Smith bodies started in August 1965 for the 66 Corvettes. St. Louis bodies started in September 1965 for the 66 Corvettes. You have it just reversed. See here for one source: http://www.stl-vettes.com/65Vette/tr...ag_display.htm



Old Jul 25, 2012 | 07:07 PM
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Originally Posted by Velox
AO Smith bodies started in August 1965 for the 66 Corvettes. St. Louis bodies started in September 1965 for the 66 Corvettes. You have it just reversed. See here for one source: http://www.stl-vettes.com/65Vette/tr...ag_display.htm



According to the 1966 Corvette Technical Information Manual and Judging Guide on page 7 A O Smith did not start building until September 1965. Final monthly serial numbers and body build dates. September total 10,2031 for both A O Smith and ST. Louis. Nothing built for the month of August for either factories. Thank you for your input and discussion. Have a great week. Maury

Last edited by maggiesadie8525; Jul 25, 2012 at 07:11 PM.
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Old Jul 25, 2012 | 07:22 PM
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Originally Posted by maggiesadie8525
According to the 1966 Corvette Technical Information Manual and Judging Guide on page 7 A O Smith did not start building until September 1965. Final monthly serial numbers and body build dates. September total 10,2031 for both A O Smith and ST. Louis. Nothing built for the month of August for either factories. Thank you for your input and discussion. Have a great week. Maury
And if you study page 7 further you will notice A code for AO Smith is August 1965 and A code for St. Louis is September 1965. The OP here was asking what the date codes indicate, and all the usual references including 1966 Judging Guide confirm what I indicated... these are for reference for decoding Trim Tags and that is what the OP was asking. This is why when reviewing 1966 cars, for example, it is necessary to know St. Louis vs AO Smith source, as it changes the date code letter decoding
Old Jul 25, 2012 | 07:23 PM
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Originally Posted by maggiesadie8525
According to the 1966 Corvette Technical Information Manual and Judging Guide on page 7 A O Smith did not start building until September 1965. Final monthly serial numbers and body build dates. September total 10,2031 for both A O Smith and ST. Louis. Nothing built for the month of August for either factories. Thank you for your input and discussion. Have a great week. Maury
1. You're reading the chart backwards - the "A" under A.O. Smith is for August, 1965, and the "A" under St. Louis is for September, 1965.

2. There's no final serial number for August, as no cars were produced in August; A.O. Smith only built BODIES, not CARS, and their bodies were sent to St. Louis for final assembly. It normally took 10 days to 2 weeks for an A.O. Smith body to be finished, rail-shipped to St. Louis, and put on the Trim Line at St. Louis for final assembly. Corvettes were only serialized and produced at St. Louis; they had no VIN when they left the A.O. Smith plant in Ionia, Michigan.
Old Oct 18, 2020 | 01:47 AM
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I know this is an old thread but just to appease my feeble brain - for the 1967 model year, did very early (specifically August 1966) St. Louis Corvette bodies receive an "A" trim tag (indicating an August body build) but then finalized as a full fledged, VIN number-wearing car in September? I ask because the Birthday Book, the 1953 - 1967 Specification Guide and the Black Book all say that no cars were built (I guess that means finalized/completed) in August, 1966. Yet, as noted, the trim tag date code letter "A" corresponds to August, 1966 which kind of makes people think the car was built in August.
Thanks for the help.
Old Oct 18, 2020 | 08:53 AM
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This thread is on very thin ice. So, I will slip an answer in. The first 2110 or so 67's built wear an A month code for Sept 66. the first month of production. The A has nothing to do with August in the 67 production year. If some people think the A means that the car was built in August 66, or even say April 67, they need to become better informed.
Old Oct 18, 2020 | 01:14 PM
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Originally Posted by zo6frc
I know this is an old thread but just to appease my feeble brain - for the 1967 model year, did very early (specifically August 1966) St. Louis Corvette bodies receive an "A" trim tag (indicating an August body build) but then finalized as a full fledged, VIN number-wearing car in September? I ask because the Birthday Book, the 1953 - 1967 Specification Guide and the Black Book all say that no cars were built (I guess that means finalized/completed) in August, 1966. Yet, as noted, the trim tag date code letter "A" corresponds to August, 1966 which kind of makes people think the car was built in August.
Thanks for the help.
After 8 years, this question would be better asked in a new thread.

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