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Aloha! I am very interested in a specific 67 Big Block Coupe that says it's matching numbers, including factory AC, but starting at the basics of the block casting, the numbers on the block are difficult to read, maybe even tampered with? I have read some threads about imperfections on block castings and other mistakes GM made with tags, etc., but not sure if this is one of them. This car doesn't have any documentation that comes with it. It sold at Mecum in 2018 as a matching numbers car, just as it sits now for $159k, but the person that bought it now has it consigned to a dealer and the dealer hasn't really validated anything and will not. I was hoping to get some feedback on the pictures of the trim tag and casting number and also if anyone is maybe familiar with this actual car. I would definitely appreciate any feedback and/or advice I can get. I have never bought a classic Corvette, but have owned several C5 and C6s, and I just don't know how to confirm a car like this. Thank you!
The block VIN stamp looks like it could be a factory grind out. the number underneath is 10706, which would be real easy to do if you put the "9" in the gang holder upside down, making it a "6".
When the block was stamped with the VIN, all of the digits were held in place with a gang holder. As they went from one engine to the next, all they removed from the holder was the last digit(s) that changed, not the whole set of digits. In this case, after the previous engine was stamped 10708, the "8" would be removed from the holder, and the "9" would be inserted in it's place. I can see someone putting the 9 in upside down, and then catching it after stamping it, grinding out the mistake on the pad (something done occasionally), and then being restamped with the correct 10709.
None of this would explain how a car built approximately February 13, 1967 (the build date for 10709), could have a trim tag dated June 2, 1967. There are known cars with mistakes on the trim tag, but it's usually on the trim or paint, not the date. And the chances of a car with both a mistake trim tag, and a block grind out, are probably less than slim to none. By the way, the first "1" in the VIN is just a GM control number that all 67 VIN's got, the actual sequence number for the car is 10709, making it the 10,709th 67 Corvette built.
So if the builder or past owner was a member of NCRS paid for the shipping report and had a sticker why was the car never judged? That raises a big red flag beside the build date of the trim tag vs the vin tag build.
09-28-2022, 09:46 PM
Help Authenticating a 427 67 Couple VIN 110709
