[Ramairnacho]

Can someone please help explain the code sequence is it like carburetor or is it aday and month sequence? My car is a 1970 auto ac ra3 as many of you know, assembled in 1st week of March. I own the cos but dates probably off and seen this cou but not sure of date. Plus I'm not sure about pitting or how thick.housing is. Is the pitting bad. I noticed my cos looks smooth compared to the cou. Now I understand the saying "only new once" yeah I need advise. And is it the same housing and housing number?

[Formulajones]

The COS was assembled on March 24th.

The COU was assembled January 15th.

[Formulabruce]

The COS must be your Esprit Rear end?
Your car had a COV? When new?

[Ramairnacho]

Originally Posted by Formulabruce

The COS must be your Esprit Rear end?
Your car had a COV? When new?

I don't know what it was but it wasn't posi. Docs say open 307 or 331. I found a 331 open c o u but not sure if date is to far out. It's 15th of Jan. Car assembled 1st week of March,. It looks pitted and I don't have experience in this. That's why I asked. The cos is about 3 week late but not pitted

[Formulajones]

Keep in mind, the date on the data tag of the car is just when that tag was stamped for the car when the body build started, it doesn't represent the actual completion date of the car. To find the actual completion date you would use the serial number and compare that to other build data points. Shouldn't be hard to do with Pontiac having PHS and plenty of docs as a reference. Dealer delivery may even give you an idea of a time frame.

As an example, my 69 Z/28 data plate has a date of 12D (1968) but according to the serial number and the data points collected in the 69 Camaro data base the car was actually completed between the 3rd and 4th week of January 1969.

This all varies throughout the year, some are closer than others depending on the type of car and options selected. Some cars get held up waiting on things.

[Ramairnacho]

Originally Posted by Formulajones

Keep in mind, the date on the data tag of the car is just when that tag was stamped for the car when the body build started, it doesn't represent the actual completion date of the car. To find the actual completion date you would use the serial number and compare that to other build data points. Shouldn't be hard to do with Pontiac having PHS and plenty of docs as a reference. Dealer delivery may even give you an idea of a time frame.

As an example, my 69 Z/28 data plate has a date of 12D (1968) but according to the serial number and the data points collected in the 69 Camaro data base the car was actually completed between the 3rd and 4th week of January 1969.

This all varies throughout the year, some are closer than others depending on the type of car and options selected. Some cars get held up waiting on things.

So.you saying the assembly day is the day they started putting car together? I thought it was done date. Oh wow. Then the interest day is that day arrived at deal or day it was done?

[Kenth]

You will find the "done date" on the Build Sheet in box #10.

F.e. my customer order Baltimore built 1970 Judge body plate date is 10 B and build sheet date is 11 - 8.

Does this mean you can find parts on my car that are made between 10 B and 11 - 8?

[Formulajones]

It's possible, not always likely but possible. So your car took about 3 weeks to complete from the day the tag was created.

[johnta1]

Firebirds were not available for sale until Feb 1970. The shipped date on PHS is pretty close to when it rolled off line. Unless it had some work to be done or it went to a Zone area.
Your VIN is close to when it shipped to dealer.
The interest date is for when Pontiac started charging dealer for the car sitting on the lot. (I think)
My Formula has a Feb 70 shipped date on PHS.

[Formulabruce]

Originally Posted by Ramairnacho

So.you saying the assembly day is the day they started putting car together? I thought it was done date. Oh wow. Then the interest day is that day arrived at deal or day it was done?

A F body rolled out of the assembly plant every 45 seconds. Cowl tag is pretty close to final and only nails it to a week anyway.

[unruhjonny]

Originally Posted by Ramairnacho

So.you saying the assembly day is the day they started putting car together? ...

Look at it this way;
That tag was not punched and stamped when the car came off the line, it would have been stamped in advance to, or right when the car was being put on to the assembly line.

Any car could have a myriad of issues which might cause it to be pulled aside, and completed at a later date.

[Kenth]

Originally Posted by Formulajones

It's possible, not always likely but possible. So your car took about 3 weeks to complete from the day the tag was created.

Yes, i guess the body on my car was made by Fisher Body Plant #21 in Detroit 10 B then shipped to Pontiac Plant in Baltimore where the car was assembled 11 - 8.

Since my car was XXXXX Custom Order it could have taken 3 weeks for transport and assembly?

[Ramairnacho]

Originally Posted by Kenth

You will find the "done date" on the Build Sheet in box #10.

F.e. my customer order Baltimore built 1970 Judge body plate date is 10 B and build sheet date is 11 - 8.

Does this mean you can find parts on my car that are made between 10 B and 11 - 8?

I don't have build sheet any more where can I get 1

[Ramairnacho]

Originally Posted by Kenth

You will find the "done date" on the Build Sheet in box #10.

F.e. my customer order Baltimore built 1970 Judge body plate date is 10 B and build sheet date is 11 - 8.

Does this mean you can find parts on my car that are made between 10 B and 11 - 8?

I don't have build sheet any more where can I get 1. And if my car was shipped on 3 13 1970 then parts have to be before that day 3 12 1970 I'm guessing? I'm learning this stuff as a kid I never paid attention to.detail
.,I just wanted to drive! Lol

[71GP76TA]

I'd avoid the rust pitted one. You will never get that pitting out. I'd rather have a wrong rear end than that.

[unruhjonny]

Originally Posted by 71GP76TA

I'd avoid the rust pitted one. You will never get that pitting out. I'd rather have a wrong rear end than that.

You might be one of few.
Appearance should come second to original/correct.

[Formulajones]

Restorers that want correct deal with that all the time. A little primer filler and prep work takes care of the pitting without much effort.

[Trevor78]

And that filling and cleaning up can also hide the fact it's not the correct one and no one can ever say otherwise as all the stamps now filled!

[Ramairnacho]

Filling the stamp was initially my plan. I've never done this before and I made mistakes when I was younger taking parts off my car and using them on daily driver.

[Formulajones]

Originally Posted by Trevor78

And that filling and cleaning up can also hide the fact it's not the correct one and no one can ever say otherwise as all the stamps now filled!

There are ways to keep that stamp intact while restoring that rear end to a nice finish