Number stamped on cowl ??? not the tag

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Old Nov 3, 2010 | 11:22 AM
  #1  
arodenhiser's Avatar
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Question Number stamped on cowl ??? not the tag

While cleaning up the cowl area of my '68 Cutlass I discovered a set of stamped number/letters on the top of the cowl near the edge of the firewall.



They are upside down if looking straight down from the underside of the hood. So I would think they were stamped preassemby. They are just slightly on the passengerside from dead center. Any ideas what they are? Another day, another question.

Adam
Old Nov 7, 2010 | 05:24 PM
  #2  
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Come on JOE P ? No ideas? Really? ha ha

Adam
Old Nov 8, 2010 | 05:25 AM
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bil
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Do they match up with any of the other numbers on your car? ---bil
Old Nov 8, 2010 | 06:55 AM
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If you flip the picture it really looks like an RPO followed by a SS396 body number.
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Old Nov 8, 2010 | 07:12 AM
  #5  
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Were exactly is this number located? Is it on the cowl at the base of the windshield or on the firewall itself?
Old Nov 8, 2010 | 08:52 AM
  #6  
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Originally Posted by joe_padavano
Were exactly is this number located? Is it on the cowl at the base of the windshield or on the firewall itself?

The numbers at at the edge vertical and horizontal part of the firewall, facing the sky (if I had no hood).



At the top of this picture you can see the top of the voltage regulator just past the edge of the cowl/firewall 90 degree transition.



I haven noticed that they are the same as any other stamping. I will try to make some more out.

If you flip the picture it really looks like an RPO followed by a SS396 body number.

I have had lots of people ask what year is my Chevelle, maybe they are are right

Adam

Last edited by arodenhiser; Nov 8, 2010 at 10:25 AM.
Old Nov 8, 2010 | 10:17 AM
  #7  
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Originally Posted by bil
Do they match up with any of the other numbers on your car? ---bil
Not yet... I do own a Frankencutlass though.

Passenger side door - Z24 33667


Diriver side door - Z14 33667 It might be a weird Z24 but it really looks more like a 1 to me.





Any ideas where to look on the hood or trunk?

Adam

Last edited by arodenhiser; Nov 8, 2010 at 10:23 AM.
Old Nov 11, 2010 | 05:17 PM
  #8  
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Regarding stamped letters and numbers on sheetmetal, check out what the Camaro Research Group's website has to say:

Sheetmetal was stamped with a Fisher Body "run number" by the stamping plant that produced the part. The run numbers were inserts in the draw die to identify the plant and the week of production and also served as proof marks to verify full die travel to closure. Almost every panel on the body will have a run number. The first letter (occasionally 2 letters) of the run number identifies the stamping plant and the number is the week (e.g. 40th week) of the calendar year when the panel was stamped.
Chevrolet-stamped parts (fenders, header panels, etc) only have the production week stamped on them.
Note that their interest is purely '67 - 69 Camaros. Your mileage may vary.
Old Mar 10, 2011 | 05:24 PM
  #9  
arodenhiser's Avatar
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Originally Posted by InfoJunkie
If you flip the picture it really looks like an RPO followed by a SS396 body number.
I just read on another thread that Oldsmobile never used the plastic grills inserts in the cowl holes. They just used the screens. During the tear down, I found pieces of the inserts that were broken and brittle in the bottoms of the cowl holes. I had also had the screen on top.

I don't know what I this means, if anything, just another tidbit of info.

Could I have a SS396 firewall/cowl? Bizzare!

Adam
Old Mar 10, 2011 | 06:05 PM
  #10  
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Windshield pillars on 68 convertibles are stamped with the week of production. It will be W-- with the "--" being the week of production
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