Does anyone know what the last series of cowl tag numbers (I believe they are plant codes) stand for? My 1970 Camaro was built in the Van Nuys plant. I believe there are two sets of six digit codes on the bottom center of the cowl tag.

 

www.nastyz28.com has extensive cowl tag decoding info

FWIW...my 70 Z does not have the series of numbers you suggest. Mine is a Norwood built car, so I'm guessing yours is a LA Built, and this is referred to as a "DP sequence", for which there appears to be very little info.

 

Yep, its a LA built car. Vin sequence shows its number 932 from the plant in 1970. Not a Z - just a standard V8 with Cranberry exterior and black interior.

Thanks for the information.