[Fred Aldrich]

Typical GM assembly plant produces 4800 cars/week on two shifts when running at max capacity without overtime. Using this "rule of thumb", a reasonable guess is that your car was built in the 13th week of production. Production usually starts in August but doesn't run at full rate for several weeks so I use Sept. 1 as a starting point. My Guess: late December or early January

Does this check out with the cowl tag?

 

[CA Elky]

Here's a ball park that might coincide with Fred's. Mine was built at the same plant and was car #156,296. It was registered in May of that year, so I'd say December or January is about right.--Amanda