i have a #'s matching 72z28... im wanting to see if my build date is correct or some sort of error when stamped???
it shows a build date of: 02E
i thought the only way to get a 5th week in february would be a leap year???

Depending on what day of the week the 1st of the month fell on that year and depending on what GM considered a week, any month can fall into 5 different weeks on a calendar. I think you are OK.
And, 1972 was a leap year.

Looking at the calendar for Feb 1972 (http://www.calendarwerks.com/calendars/1972/monthly/february)it does have 5 wks in it. The 5th week started on Sunday the 27th and ended on Tueday the 29th (leap year). So the car was scheduled for that week even though its possible nothing was started till Friday April 3rd which would still be consider the last week of Feb production SCHEDULE.


Keep in mind it took several days to build the complete car, 2 to 3 from start to final roll-off to the shipper, not one day as so many think. The Trim Tag was created a day ahead of time in the Body Scheduling Department in the front office, where they created the "run sheet" for the Body Shop, and they were taken out to the Body Shop in steel trays, arranged in "run sheet" sequence, and installed on the cowl at the end of the body framing line where the raw shell was welded together.

Cars did not roll down the line in VIN order, they used job number inside the plant to id the vehicle. The VIN is for use outside of the plant pursuant to federal, state and local laws.

They were stamped with computer card info, not manually. There is no absolute relationship between the cowl tag and the calendar. The production week GM used does not necessarily follow the calendar to the letter.


A week is generally a week in the body code, you just can't say that the A week started on the 1st of the month, or the E (or D) week ended on the 30th of the month. .

thanks guys.. much appreciated!!!

Looking at the calendar for Feb 1972 (http://www.calendarwerks.com/calendars/1972/monthly/february)it does have 5 wks in it. The 5th week started on Sunday the 27th and ended on Tueday the 29th (leap year). So the car was scheduled for that week even though its possible nothing was started till Friday April 3rd which would still be consider the last week of Feb production SCHEDULE.


Keep in mind it took several days to build the complete car, 2 to 3 from start to final roll-off to the shipper, not one day as so many think. The Trim Tag was created a day ahead of time in the Body Scheduling Department in the front office, where they created the "run sheet" for the Body Shop, and they were taken out to the Body Shop in steel trays, arranged in "run sheet" sequence, and installed on the cowl at the end of the body framing line where the raw shell was welded together.

Cars did not roll down the line in VIN order, they used job number inside the plant to id the vehicle. The VIN is for use outside of the plant pursuant to federal, state and local laws.

They were stamped with computer card info, not manually. There is no absolute relationship between the cowl tag and the calendar. The production week GM used does not necessarily follow the calendar to the letter.


A week is generally a week in the body code, you just can't say that the A week started on the 1st of the month, or the E (or D) week ended on the 30th of the month. .
That's useful info to know. Thanks for posting!