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Author Topic: Subframe date stamping  (Read 3228 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
350/300HP RPO Z11
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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.
1969 Indy Pace Car
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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.
1969 Indy Pace Car
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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
68 SS/RS L35 Th-400 LOS
69 Pace Car L48 Th-350 LOS
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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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67 LOS SS/RS L35 Hardtop - Original w/UOIT
67 NOR SS/RS L35 Convertible - Restored
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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
68 SS/RS L35 Th-400 LOS
69 Pace Car L48 Th-350 LOS
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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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67 LOS SS/RS L35 Hardtop - Original w/UOIT
67 NOR SS/RS L35 Convertible - Restored
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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  
'69 SS 350/4 speed  Fathom Green--POP
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