Vehicle Identification Number
See VIN decode page

Carburetor Manufacturer 
B - Bay City
C - Carter                
R - Rochester

Engine Info
Assembly Plant
F or V - Flint, Michigan
K - McKinnon Industries
T - Tonawanda Engine Plant

Assembly Date
Month
01 - January
02 - February
03 - March
04 - April
05 - May
06 - June
07 - July
08 - August
09 - September
10 - October
11 - November
12 - December
Day   
01 to 31

Engine Suffix Code
CDA - 350 ci 2-barrel with manual trans
CDD - 350 ci 4-barrel with TH 350 trans
CDG - 350 ci 2-barrel with manual trans
CKA - 350 ci 2-barrel with manual trans
CKB - 350 ci 2-barrel with TH 350 trans
CKD - 350 ci 4-barrel with TH 350 trans
CLB - 402 ci 4 barrel with TH 400 trans
CMD - 350 ci 2-barrel with TH 350 trans
CPD - 454ci 4 barrel with TH 400 trans
CRW - 454ci 4 barrel with TH 400 trans
CTB - 402 ci 4 barrel with TH 400 trans
CTL - 350 ci 2-barrel with TH 350 trans

Rear Axle Info
Axle Prefix Code
CF - 3.31:1 with Positraction        
CH - 2.73:1 with Positraction        
CW - 3.31:1        
GA - 2.56:1        
GB - 2.56:1 with Positraction        
GC - 2.73:1        
GD - 2.73:1 with Positraction        
GH - 2.73:1
KD - 2.73:1   
RU - 3.31:1        
RV - 3.31:1 with Positraction

Assembly Plant
C - Buffalo, NY            
G - Chevrolet Gear & Axle            
W - Warren, MI            
K - McKinnon Industries

Assembly Date
Three digit Julian date starting with Jan 1, 1970
Example: 028 is January 28, 1970. 365 is December 31, 1970.

Shift
1 - First shift
2 - Second shift
Note that not all plates have shift codes

Positraction Code
E - Eaton Positraction

Assembly Month
H - August
J - September
K - October
L - November
M - December            
A -January            
B - February            
C - March            
D - April            
E - May            
F - June            
G - July

Transmission Info
Turbo Hydra-Matic 400

Model year
72 - 1972 model year

Engine Type
D - 402 engine
F - 454 engine

Date of Build
Three digit Julian date starting with Jan 1, 1971

All other transmissions

Assembly Plant and Transmission Type
B - Cleveland Turbo Hydramatic 350        
D - Sagiunaw 3-speed manual
J - GM of Canada Turbo Hydramatic 350
K - McKinnon Industries 3-speed Manual        
M - Muncie 3-speed manual        
O - Saginaw
S - Saginaw 3-speed manual
W - Warner Gear 3-speed manual
Y - Toledo Turbo Hydramatic 350

Year            
2 - 1972 model year        

Assembly Month            
M - August
P - September    
R - October    
S - November    
T - December    
A - January    
B - February    
C - March    
D - April    
E - May    
H - June    
K - July

Assembly Day
01-31

Assembly Shift
D - Day shift
N - Night shift
Note not all plates have shift codes