1965-1975 ENGINE CODE IDENTIFICATION

The 1965-1975 engine code stampings used the same basic format over the full eleven-year period and that included the stamping location as well. The V-8 engines utilized the block code pad immediately forward of the right hand cylinder head. Both of these locations were used from 1955 to 1975.
     The engine assembly code format consisted of seven alphanumeric characters from 1965 to 1969. In 1970, the letter "C" was added to the engine code to designate Chevrolet Motor Division. The first letter in the engine code always represents the engine assembly plant.