? about Chassis Coding?

BigBertha442 · 03-01-2008, 09:07 PM

Does any body know what code these are in the attached image? They are on the back driver trunk area
on the chassis.
Someone once told me that they marked options and such on chassis after the car was done with production?

is this true?

don71 · 03-01-2008, 10:43 PM

I recoginize the "3667" as being a convertable. To confirm, the frame would be boxed in the appropriate areas.

I can't help with the rest.

By the way, nice job on the photo, it clearly shows the numbers.

I believe there is another series of numbers near the cowl/door area that should be vin related. Do the numbers in the photo area relate to your vin at all? These are the only two areas I am familiar with that have stampings. I don't know they have any thing to do with options though.

BigBertha442 · 03-02-2008, 09:50 AM

Yes I also noticed that # 3667 but it is not boxed in it is a 1972 442 - S Hard Top. I will look for the other numbers today.

fearthisrocket · 03-04-2008, 03:25 PM

I have just discovered after trying to figure out what one of my frames are that the first #, 7 digits is the part number. I have an old mitchell interchange manual and found my frame to be a 3960733 which is a 68 or 70 F-85. The 2 letter code will tell you the factory code for what it goes under but you will find this only in an assembly manual. I have not figured out the rest yet but will keep you all informed. I will look and see if I can find your # in my manual.

fearthisrocket · 03-04-2008, 03:35 PM

Yours is a 72 frame for cutlass/f-85. If you have a assembly manual, go to the frame ID page and there should be a box with the letter codes. The 3 #'s after the part # possibly could be a julian date but not sure on the rest. Julian date is out, Mine is 401. ???? Yours is 366, Not it either unless it was a leap year. ????

03-01-2008, 10:43 PM	#2 (permalink)
don71 feed the pig Join Date: Jun 2007 Location: Central Missouri Posts: 206	I recoginize the "3667" as being a convertable. To confirm, the frame would be boxed in the appropriate areas. I can't help with the rest. By the way, nice job on the photo, it clearly shows the numbers. I believe there is another series of numbers near the cowl/door area that should be vin related. Do the numbers in the photo area relate to your vin at all? These are the only two areas I am familiar with that have stampings. I don't know they have any thing to do with options though. __________________ 1971 Cutlass S Holiday coupe with a 455/th400 3.23 rear and whole lot of miles. Keep'em running boys! Last edited by don71 : 03-01-2008 at 10:54 PM. Reason: nice photo

03-02-2008, 09:50 AM	#3 (permalink)
BigBertha442 Member Join Date: Feb 2008 Location: East Valley, Az Posts: 63	Yes I also noticed that # 3667 but it is not boxed in it is a 1972 442 - S Hard Top. I will look for the other numbers today. __________________ Owner of BigBertha442 Sal

03-04-2008, 03:35 PM	#5 (permalink)
fearthisrocket Junior Member Join Date: Feb 2008 Location: Michigan Posts: 23	Yours is a 72 frame for cutlass/f-85. If you have a assembly manual, go to the frame ID page and there should be a box with the letter codes. The 3 #'s after the part # possibly could be a julian date but not sure on the rest. Julian date is out, Mine is 401. ???? Yours is 366, Not it either unless it was a leap year. ???? Last edited by fearthisrocket : 03-04-2008 at 03:38 PM.

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03-04-2008, 03:25 PM	#4 (permalink)
fearthisrocket Junior Member Join Date: Feb 2008 Location: Michigan Posts: 23	I have just discovered after trying to figure out what one of my frames are that the first #, 7 digits is the part number. I have an old mitchell interchange manual and found my frame to be a 3960733 which is a 68 or 70 F-85. The 2 letter code will tell you the factory code for what it goes under but you will find this only in an assembly manual. I have not figured out the rest yet but will keep you all informed. I will look and see if I can find your # in my manual.