Quadrajet Problem Solving > Quadrajet Parts and Numbers

Carter date code assistance requested

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VITV:
Hi there.

I have 2 Quadrajets from Carter. They are both 7042220. They both have an EM which is the plant code? One has a K1 for a date code that I believe to be November 1971 which could be correct for an early 1972 car. The second carburetor has M1. This translates to the 13th month?

It was my understanding that A = Jan, B = Feb, C = Mar and so on. Any help dating this carburetor and more knowledge on identifying the dates for Carter produced Q's would be greatly appreciated.


Thank you

Ethan1:

--- Quote from: VITV on November 15, 2016, 06:11:06 AM ---Hi there.

I have 2 Quadrajets from Carter. They are both 7042220. They both have an EM which is the plant code? One has a K1 for a date code that I believe to be November 1971 which could be correct for an early 1972 car. The second carburetor has M1. This translates to the 13th month?

It was my understanding that A = Jan, B = Feb, C = Mar and so on. Any help dating this carburetor and more knowledge on identifying the dates for Carter produced Q's would be greatly appreciated.


Thank you

--- End quote ---

 Welcome to CHP!

 Actually, K1 is October, 1971 and M1 is December, 1971. Why Rochester skipped the letter "I", I don't know.

 http://www.chevellestuff.net/qd/rochester_carbs.htm

VITV:
Thank you for the info. That helps a lot.

unruhjonny:
the date code of an original/unmodified carb will never contradict the model year.

That being said, the following "calender year" cars start to be priduced around or after August.
Also, those carbs i dicate they are for 1972 model years cars;
7042220
704 = 1970-1975 early float bowl configuration
2 = 1972

The 1972 modely year cars/parts would have been produced from about August 1971 through to June 1972.

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