Re: ~Getting old records from GM~
The original "NCRS Corvette Specifications Guide" covered 1953 to 1972 because those were the Corvettes we judged at the time they were printed. As time went on and more Corvettes were added to the judging cohort the Specifications Guide was also expanded. It eventually became two volumes one covering 1953 to 1967, and the other 1968 to 1982. So what the book covers, and what is included depends on when it was printed. The very first one, which was an issue of The Corvette Restorer, Volume 16 #1 iIRC, contained some information (bulb numbers come to mind) that other issues did not contain.
The original "NCRS Corvette Specifications Guide" covered 1953 to 1972 because those were the Corvettes we judged at the time they were printed. As time went on and more Corvettes were added to the judging cohort the Specifications Guide was also expanded. It eventually became two volumes one covering 1953 to 1967, and the other 1968 to 1982. So what the book covers, and what is included depends on when it was printed. The very first one, which was an issue of The Corvette Restorer, Volume 16 #1 iIRC, contained some information (bulb numbers come to mind) that other issues did not contain.
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