PPG Glass Date Codes?

**Kurt S** · #1 08-05-2003, 07:17 AM

Off the top, doesn't the -30 indicate the plant code it was made at?

Musclecarkid · #2 08-05-2003, 07:29 AM

I don't know what 27 30 means. I hope someone can figure this out.

JoeG · #3 08-06-2003, 08:11 AM

musclecarKid,
I pulled out two original side pieces of PPG glass that came off my '69 chevelle to check the code.The rt frt.PPG glass reads flow lite [27-29],the smaller rt.r.PPG reads flow lite[26-49]

Now I'd say it's a rating of the glass--at first I thought it was a light transmission rating, but then I found some info on [noise reduction ratings ]and [sound transmission class] on safety tempered glass ,and it's rated by thickness of glass, manufacturing process etc.---the rating system is similar[ 27-30 ]--[26-47]---[25-29] and so on.---Just some more info to kick around----JoeG

**Mr70** · #4 08-07-2003, 03:33 PM

Aren't they still around??
They should have records on file.
Is it possible to stil contact PPG today and ask them what they mean?

JoeG · #5 08-07-2003, 03:59 PM

Mr70,
Good idea----Oh yeah---copo9566aa/Roger said ,the Canadian Maple Leaf he painted on the side of your Chevelle is not permanent.

I Called PPG Rick, cust. service said first 2#'s = plant, second 2#'s= day/ month ------but they were thinking of changing over to noise transmission ratings : [img]/ubbthreads/images/graemlins/tongue.gif[/img]------- [img]/ubbthreads/images/graemlins/grin.gif[/img] [img]/ubbthreads/images/graemlins/beers.gif[/img]

Musclecarkid · #6 08-08-2003, 07:36 AM

Joe G,Are you saying 27-30 is: 27 = Plant Code and 30 = March 70? Or 3 = day and 0 = ? I'm lost!!Kevin

Mark_C · #7 08-08-2003, 02:42 PM

I don't think that is correct:

My glass (04L Pace car) are coded as follows:

Drivers door: 26-29
Drivers Quarter: 27-29
Passenger Door: 16-29
Passenger Quarter: 27-29

My passenger door has no DOT codes on it which would indicate it was made before 1/1/69 since glass had to carry a DOT code after that date.

A wild guess would be that the first 2 numbers are a week code based on the production year. The first week of August would be 1, January 1, 1969 would be 23. The second one could be the assembly plant if there are 29 of them, or it could be plant no. 2 in year engine in a 9.

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