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Author Topic: Subframe date stamping  (Read 3284 times)
LVN 67
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« on: March 11, 2012, 11:20:36 AM »

I have been following the restoration of two 67 pace cars on their web site. On one, it shows the subframe stamped up side down, and the other, right side up.  Did the subframe providers stamp their products differently?  I didn't catch if they were NOR or LA cars   Huh
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Mark
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« Reply #1 on: March 11, 2012, 07:05:29 PM »

Subframes were shipped and store upside down, they had an orange inspection stripe on the side between the firewall body bushing support, and the control arm bushing mounts, that always have the drips on the top (because they were inspected when they were already upside down), so if they were date coded they should probably be upside down, but I guess it would all be in the way the guy grabbed the stamp, upside down, rightside up, vertical probably didn't matter to the inspector.
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Mark C.
1969 Indy Pace Car
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« Reply #2 on: March 12, 2012, 09:33:30 PM »

Where are the subframes stamped at?  I never took notice of this.
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Mark
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« Reply #3 on: March 13, 2012, 11:10:03 AM »

Its a painted on stamp (not a stencil) with a production (or inspection) date, that sat on top of the black coal tar paint that the subframes were dipped in so 99 percent of them faded away, and fell off with the coatings over the years. Very few cars have them.  Most don't even have the orange inspection stripe on them anymore and that was alot heavier paint than a stamped date.  most of the cars you see them on are in the restoration grafitti class of cars, and have 500 chalk marks on the firewall and every color known to man inspection paint daubs on every bolted connection on the car.  Same with powered coated subframes, gloss black painted undercarriges and suspensions that rival the finish on the top of the car.  GM slapped 900 of these cars a day out of the plant, they didn't pay as much attention to the bottom of the cars as owners do today.  They did what was required to build as many of these cars as they could to meet the demand.
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Mark C.
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« Reply #4 on: March 13, 2012, 05:18:47 PM »

Where the 69 subframes also marked and does anyone have a photo of what it looked like
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Mark
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« Reply #5 on: March 13, 2012, 07:08:28 PM »

Heres a date code from a 67, and an orange inspection line on a Norwood 69,thats the only inspection mark on a 69 I've seen
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Mark C.
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« Reply #6 on: March 13, 2012, 11:41:48 PM »

I've never seen one of those '67 Sub-frame date stamps.  I found some stamped partial #'s  on the outside Pass. side about a foot from the back end.  I could not clearly make them out.  I do remember that part of it looked like it could be I 42, which would be close to build date of my 11A car.  Most other Date codes I've found are week 41 to week 44.
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1967 Camaro  LOS  11A
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« Reply #7 on: March 14, 2012, 02:18:04 AM »

This is the stamp on my 69 LOS 04C Z11

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Jim
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« Reply #8 on: March 14, 2012, 08:35:41 AM »

Might be an LA/NOR thing.  LA would probably have sourced their subframes locally since the shipping on them from the Michigan area would have been problematic.  Orange inspection stripes Norwood, date stamps for LA?  Maybe we need a thread like gas tank stamps to see who has what inspection mark, and where the car came from.  Originals only, no restored cars unless it was documented on the car itself.

My 04L Pacecar has just the slightest hint of an orange line behind the drivers side front wheel on the subframe.  I have never touched the subframe of my car except to replace springs and shocks.
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Mark C.
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« Reply #9 on: March 14, 2012, 06:10:48 PM »

 I never knew what this mark on my car was until I read this thread. Here is a picture of what remians of the stripe in front of the left front tire.
This is on my unrestrored 67 LOS 4B car.
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« Reply #10 on: March 14, 2012, 10:30:00 PM »

Orange inspection stripes Norwood, date stamps for LA? 

Yes, Mark the car has an Orange stripe also
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Jim
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« Reply #11 on: March 15, 2012, 05:04:29 AM »

Great topic more info and pictures needed was there a date stamp on 69 norwood car rails
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OG69Z
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« Reply #12 on: March 15, 2012, 10:59:53 AM »

No date stamp, but here is a photo of the yellow mark on a 03B  LA car.
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Mike S
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« Reply #13 on: March 15, 2012, 12:12:15 PM »

No date stamp, but here is a photo of the yellow mark on a 03B  LA car.


Is there an attachment missing?

Mike
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« Reply #14 on: March 15, 2012, 12:27:20 PM »

Look at the bottom of the picture and slide it over. It's there.
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Daniel  
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« Reply #15 on: March 15, 2012, 12:44:56 PM »

Look at the bottom of the picture and slide it over. It's there.
Was this reply to me? I'll be darn if I see a picture mentioned in OG69Z's reply.  Huh

Mike
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« Reply #16 on: March 15, 2012, 01:06:35 PM »

Hi Mike,
  Yes, I attached a photo to the post. I see it on my monitor, but if there is a problem , I'll attempt to post it again. Otherwise, it looks just like your photo.
Bob
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tmodel66
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« Reply #17 on: March 15, 2012, 01:21:48 PM »

Look at the bottom of the picture and slide it over. It's there.
Was this reply to me? I'll be darn if I see a picture mentioned in OG69Z's reply.  Huh

Mike

Yeah Mike I'm sorry I didn't "Quote" you so you would know. The pic shows up but on my monitor it's a little too big to fit so I have to scroll it over to see the paint stripe is what I meant.
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Daniel  
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« Reply #18 on: March 15, 2012, 02:58:50 PM »

Heres another 67 LOS Pacecar stamp.  Believe its on the passenger side frame rail under the door; it also has the orange stripe on the outer face of the frame infront of the drivers wheel.

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Mark C.
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« Reply #19 on: March 15, 2012, 04:35:51 PM »

Quote

Yeah Mike I'm sorry I didn't "Quote" you so you would know. The pic shows up but on my monitor it's a little too big to fit so I have to scroll it over to see the paint stripe is what I meant.

That was strange. My IE browser at work didn't display the pic but now I see it at home.

Mike
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67 LOS SS/RS L35 Hardtop - Original w/UOIT
67 NOR SS/RS L35 Convertible - Restored
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« Reply #20 on: March 15, 2012, 08:08:32 PM »

My 69 Z10 Norwood 04C  "422  69" just a couple of inches behind the bumper extension Left outside rail.The paint looked more yellow than orange.
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69 Z10,72 corvette
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« Reply #21 on: March 16, 2012, 04:53:32 AM »

Would a 69 late built car have had a date code  painted on the siderail
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Mark
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« Reply #22 on: March 16, 2012, 07:54:51 AM »

Thats sort of what we are trying to figure out.  Which ones had it, and where is it.  67's seem to have them on the passenger side rail in the vicinity of the firewall bushing support, so far the 69's seem to have them on the left front frame horn near the radiator bushing support hole, but thats only from 4 or 5 cars total, way to early to say anything definative.
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Mark C.
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« Reply #23 on: March 21, 2012, 07:57:03 PM »

Thank you guys for pointin this out - I knew/found the orange stripe, but never knew about the number
unfortunately 35 years of road grime and the like have not been kind
I see three distinct white marks but they are all illegible. I used dish soap to find the markings, but alot of the black paint is also gone, and all that is left is rust
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Chris
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