Rochester carburetor decoding
Example: # 7028219
DG 1938
7028219Prefix code. "70" will appear on all late '60's Rochester Carburetors

76 and later will start with "170"
2 - Decade produced.
702 - 1960's
703 - 1060's with A.I.R.
704 - 1970-1975
1705 - 1976-1979 
1708 - 1980's 
7028219Year produced.
8 = 1968
If the number was 7045219 then
5 = 1975
7028219Model
0 - Monojet (1 bbl) Federal standards
1 - Two jet (2 bbl) Federal standards
2 - Quadrajet (4 bbl) Federal standards
3 - Monojet (1 bbl) California standards
4 - Two jet (2 bbl) California standards
5 - Quadrajet (4 bbl) California standards
6 - VariJet (2 bbl) Fed
7028219 - Division.
0, 1, and 2 all indicate Chevrolet.
4 - Buick
5 - Olds
6,7 - Pontiac
7028219 - Transmission
Even numbers - Automatic Transmission
Odd numbers - Manual Transmission
DGProduction Plant Code.
1938 Date Code
193 = 193 rd Day of the year
1938 8 = Year

Technical Data
Throttle Shaft Clearance
Carburetor Decoding Examples
More Decoding
Buzzard Carburetors
1877 17th Avenue
Vero Beach, Florida
             772-564-9018 		This site is courtesy of Bengal E Productions.  Any questions or comments please feel to contact the webmaster. 

 quotecarinsurance.com