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**DANTIP** · 09-28-2009, 05:43 PM

The last two characters on my Q-Jet carb stamp is IU (likely in the same place as your YD) and in the carb section of my build sheet is IU, therefore I assume this was the code used at the factory. I have never seen a breakdown of this 2-letter code.

09-28-2009, 05:43 PM	#6
DANTIP Registered User Join Date: Sep 2001 Location: Fort Wayne, Indiana, USA Posts: 1,890	Re: Rochester Quadrajet ID issue The last two characters on my Q-Jet carb stamp is IU (likely in the same place as your YD) and in the carb section of my build sheet is IU, therefore I assume this was the code used at the factory. I have never seen a breakdown of this 2-letter code.