70+ Camaro Subframe dating has been discussed several times and recently at
www.nastyz28.com in the ORIGINAL Forum. (Sorry, short on time to post direct link, Please search in Orig Forum). I repeat no conclusion was reached on plant location lettering code.
Below Picture shows month, day & year stamping. The N has never been confirmed as standing for Norwood as other Letters have been found for other frame mfg locations.
Stamping has nothing to do with VIN and nastyz28 conclusion is for numbers/mfg date only. We think the number after the letter is the day shift (1) or night shift (2).
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Chuck Sharin
[email protected]
Auburn,WA (30 miles South of Seattle)
70 Camaro R/S Z-28, L-78, R/S SS
69 Camaro COPO "recreation"