How to Identify Chevrolet 1969 Carburetor Date Codes
- 1). Locate the Rochester/Carter date code. According to Chevelle Stuff, three sets of codes are stamped together on the side of the carburetor body, including the seven-digit model number and a four-digit date code. An example code is 1359.
- 2). Decode the Rochester/Carter date code. The first three-digits indicate the day of the year the carburetor was manufactured and the last number is the decade year. To determine the decade, the third digit of the model number is necessary; both 2 and 3 were used to designate the 1960s. Date code 1359 is a carburetor manufactured on the 135th day of 1969.
- 3). Locate the Holley date code. According to Chevy-Camaro, there are four sets of numbers located on the air horn, including the Holley list number, Chevrolet part number, an application number and a date code. The air horn is on the top of the carburetor, where air enters the unit.
- 4). Decode the Holley date code. Chevelle Stuff decodes the three-digit date code as follows: the first digit represents the decade year, the second is the month, followed by the week. Date code 933 was manufactured the third week of March, 1969. This system was used between 1965 and 1972, so there is no confusion between decade year.
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