69 Corvette M21 - first day of A_B_C code stamp suffix
EBay item (link) http://cgi.ebay.com/ebaymotors/69-Co...item3a581db305
..... provides an example of the first day (October 21st, 1968) that the Muncie plant implemented the A, B, C suffix code stamping, respecively for M20, M21 and M22, per note in A.Colvin's Chev-by-the-Numbers '70-75.
As a bonus, it's a close ratio transmission from a '69 Corvette VIN # 06595, with assembly code stamping P9R21B. Supposedly, any transmissions assembled on the 20th of October would all have the stamp P9R20 (without suffix).
Disclosure: I have no connection to this auction.
..... provides an example of the first day (October 21st, 1968) that the Muncie plant implemented the A, B, C suffix code stamping, respecively for M20, M21 and M22, per note in A.Colvin's Chev-by-the-Numbers '70-75.
As a bonus, it's a close ratio transmission from a '69 Corvette VIN # 06595, with assembly code stamping P9R21B. Supposedly, any transmissions assembled on the 20th of October would all have the stamp P9R20 (without suffix).
Disclosure: I have no connection to this auction.