Re: 1970 L-78 Engine Code & Car Vin # Question
The "W" is actually GM's Willow Run plant which is located in Michigan. While many 1969 Norwood Camaros used the area near the oil filter to stamp the VIN derivative, I can tell you (with reasonable certainty) that Willow Run used the pad in front of the right cylinder head exclusively. I have not seen or heard of anything different on a Nova.
I know that the Willow Run plant built other cars besides Novas (Corvairs come to mind, but that would have ended in 1969), but I wouldn't rule out an error in the Colvin book either. I'm with Joe - I never heard of an L-78 Monte Carlo, but I guess stranger things have been built.
Regards,
Stan Falenski
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