Decoding a 1968 SS 427 - Impala Tech
Tag Team De-coding tags & numbers

 
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post #1 of 7 (permalink) Old 03-06-2007, 12:06 PM Thread Starter
 
Join Date: Mar 2007
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Decoding a 1968 SS 427

Hello:

Just wondering if anyone here can help me with information on these codes? I found these codes hand written on a sheet of paper stuffed in the seat springs. They are:

526
4080 c-1
A51 C60
M40 Y02
Y03 Y10
Z03 Z24
MG
CH CH

The easy ones like Z03 and Z24 C60 A51 I know but the other ones I can't find.

Also wondering if anyone else has found a piece of paper like this in their car? Sheet measures 5" X 11" long.

Vin# 164678C106806

Engine Pad# T09281S 18C106806

10C

St: 68-16467 Body BC00187

TR: 836

C1 paint

Thanks for any help you guys can give me. Can also email a copy of this sheet in PDF form if it helps.

Regards,

Jim Pentz
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post #2 of 7 (permalink) Old 03-06-2007, 10:35 PM
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Location: Kitchener, Ontario Canada
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Jim...I can help you. If you don't mind giving me a day or two I can decode most of this for you.

Matt

www.1969chevy.com

'69 Impala LM1 F40 J52 M38 C60 N33
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post #3 of 7 (permalink) Old 03-11-2007, 09:25 PM
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Quote:
Originally Posted by Jim Pentz View Post
Hello:

Just wondering if anyone here can help me with information on these codes? I found these codes hand written on a sheet of paper stuffed in the seat springs. They are:

526
4080 c-1
A51 C60
M40 Y02
Y03 Y10
Z03 Z24
MG
CH CH

The easy ones like Z03 and Z24 C60 A51 I know but the other ones I can't find.

Also wondering if anyone else has found a piece of paper like this in their car? Sheet measures 5" X 11" long.

Vin# 164678C106806

Engine Pad# T09281S 18C106806

10C

St: 68-16467 Body BC00187

TR: 836

C1 paint

Thanks for any help you guys can give me. Can also email a copy of this sheet in PDF form if it helps.

Regards,

Jim Pentz
Jim,

Go to http://impalass427.com/
Go to the 1968 tab and select RPO codes. This is a site dedicated to all Z24 cars, and has just about all of the information you're looking for.

Bigblox
`68 Z03/Z24 L72 Sport Coupe
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post #4 of 7 (permalink) Old 03-12-2007, 10:19 PM
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Jim

Sorry for the delay in getting back to you. I have unexpectedly been away so I don't have my library and files on hand and I certainly don't have RPO's memorized!

I assume you have already decoded your tag and VIN, if not let me know and I'll dive in.

Off the top of my head it appears that the codes you don't know are M40, Y02, Y03, Y10, MG and CH CH. M40 is Turbohydromatic 400 transmission. MG and CH CH I would guess are the codes for the rear (MG) and front (CH) springs. Y02, Y03 and Y10 look like other internal GM RPO's you'll never see on an order form, in literature or published on the net. I have a listing of some but by no means all. So I will look those up.

526 and 4080 - I would have to look to see where your VIN falls in terms of production date, but I wouldn't be surprised if the 526 was the sequence number of your body as it moved down the line at Fisher Body, and 4080 could be the actual production date. The C-1 is easy...that's your paint code from your trim tag.

Now the big question - has anyone ever found a sheet like this? Yes, many people have. Save it, it's part of your car's documentation like a build sheet. Now, not really valuable like a build sheet since it is hand written, but a part of your car's history nonetheless. At various Fisher Body locations, as the cars moved through the body assembly, interior installation and final assembly at Fisher (before moving on to the final assembly at Chevrolet) very often a sheet like this would be placed in the car with a quick reference to information about how the car will be optioned, which will affect how the body gets built. This is by no means the ONLY way this was done, other plants had more formal documentation.

I found one myself under my package shelf, laying under the jute padding on the bare metal. It had far less info than yours, with only the sequence number, the model (6489, Impala, 4-door sport sedan) and the interior color ("60" short hand for 860, dark green) I've linked it here.

There was no pattern to these, they were simply scribbled out by workers with information that was relevant to their particular operations.

www.1969chevy.com

'69 Impala LM1 F40 J52 M38 C60 N33
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post #5 of 7 (permalink) Old 03-12-2007, 10:27 PM
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www.1969chevy.com

'69 Impala LM1 F40 J52 M38 C60 N33
69chevyguy is offline  
post #6 of 7 (permalink) Old 03-21-2007, 04:15 PM Thread Starter
 
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Thanks for the helps guys

Thanks again for the help on my codes guys. I do appreciate it.

Jim
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post #7 of 7 (permalink) Old 04-22-2007, 08:51 PM
 
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Jim

Basic info: Built 3rd week of October, 8 cyl Impala, 2 door convertible. Gold trim, bucket seats.

Steve
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