ebay L78? Cowl tag HO90??

[PeteLeathersac]

Whether an original L78 car or not, what's HO90 on the cowl tag refer to?.

http://cgi.ebay.com/ebaymotors/1969-RPO-...1QQcmdZViewItem

~ Pete

[redeuce]

It was the 90th car to go down the assembly line on the 8th working day in January.

[PeteLeathersac]

Thanks and of course it is...stupidly I was thinking it was the two letters HO with the two numbers 90, not the single letter and three digits..

~ Pete

[Steve Shauger]

Its assumed to be a scheduling/sequencing # used in the LA plant.

[Kurt S]

It is an L78 car.
He's not clear in the ad, but that's not the original block (and it's an auto car).
The original block is still around.....

Axle looks too early for that build date.

[Unreal]

Redeuce,
Has the LA scheduling code been decoded, or is that a supposition? If it's been decoded, and January is "0", how would they have coded December? 11?

[Kurt S]

Yes, the code has been defined. From http://www.camaros.org/numbers.shtml#b:

The LOS (Los Angeles/Van Nuys) body scheduling code is a letter followed by one to three digits, e.g., F103. Based on data analysis only (there is no GM documentation yet available that describes this code) - but with consistent application to thousands of datapoints - CRG believes the code was used by LOS Fisher Body (and other plants that built multiple carlines) to aid in scheduling the body build order.

The letter indicates the approximate production day of the month for the start of the assembly of each vehicle body. It began with letter "A" on the first day of the month of the Fisher production calendar, incremented at the start of each additional production day to the next alphabetic letter, and was reset to letter "A" at the start of the next production month. (Note that the Fisher production calendar is known to differ slightly from the calendar month, and we also do not yet know exactly how the Fisher production calendar related to the Chevrolet monthly production reporting calendar.)

The one-to-three digit sequence number that follows the letter was reset to 1 at the start of each production day and was incremented serially with each body built by the factory as the day progressed. Data analysis indicates that the sequence number at the LOS plant was assigned regardless of model or body type. By this we mean that Camaros and full-size passenger cars both incremented the same sequence counter. The unit counter was reset to 1 the next day as the day-of-the-month code letter incremented to the next letter. In the example, F103 would indicate the sixth day of production for a given month and the 103rd body started on that sixth day of production.

[lzdick]

Kurt,
What would happen on the 27th day of the month (when the alphabet has been used up)? Would the 27th be 'A' or 'AA'?
Rich

[Unreal]

If I read correctly, the production month is not in the code, it comes from the build date on the tag. But since the production month and calender month may not correlate, an early production day on the scheduling number might very well relate to a 4D production date on the tag.

So H 090 would mean the 90th (090) car of the 8th (H) day of whatever month is on the tag. Theoretically there should be an H090 for each production month.
Do I understand correctly?

[wundercluck]

I've seen some really late in the month cars that used a symbol instead of a letter. One used a % sign, like %090.
Don