Protect-O-Plate Documention
While browsing through my 70 AIM (of all things), I came across a sheet that explains the data coded on my Protect-O-Plate, which might be of interest to some. For example:
Looking at the Protect-O-Plate in a mirror, in the upper right corner of the metal tag is a letter which represents the Carb Source:
B ---- Bay City
C ---- Carter
H ---- Holley (it’s misspelled ‘Holly’ in the AIM)
R ---- Rochester
Mine's a Carter.
There's more info there that duplicates some info found on the build sheet.
You're right, there's a lot of information on the plate..... I guess more than any place else on the car since it lists the VIN, Engine Assembly Information, and many but not all options.
UPC 0, Sheet B-3.
Regards,
Alan
The Protecto-Plate was to be used for warranty repairs and service.
(My AIM shows codes in rows A, B, and C only).
At position
A-15 -- Vehicle Serial Number
***A-29 - Carb Source
B-1 --- Engine Source, Date, & 3 Digit Type Code
B-15 -- 3 Digit Rear Axle Type, Date & Source Code
#B-29 -- Month Produced
*C-1 --- Chevrolet Manufactured Use Source & Date
*C-15 -- Power Steering Code; 1 = N40
*C-16 -- Power Brake Code; 1 = J50
*C-17 -- Radio Code; 3 = U69 or U79
*C-19 -- Air Conditioning Code; 1 = C60
*C-20 -- Power Window Code; 3 = A31
The *** refers to the Carb Manufacturer Table
Bay City --- B
Carter ----- C
Holley ----- H
Rochester - R
The # refers to the Month Table - Jan = 1, Feb = 2, etc.
The * refers to note - for other plate details, see DSSM No. 6.
So if you card is blank at any of the matrix positions, your car did not originally have that option.
JSYK, I just found this sheet, so I'm certainly not an expert. I'm still not sure what the code at C-1 means, and also where to find DSSM No.6.
Let's hope others can help.
















