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VCCA Home Forums TECHNICAL - 1945 AND NEWER 1971-1979 Carter Quadrajet date codes

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Carter Quadrajet date codes #278028 05/12/13 06:16 PM
Joined: Mar 2011 Posts: 229 Wisconsin, USA Chevy1778 OP Backyard Mechanic
OP Chevy1778 Backyard Mechanic Joined: Mar 2011 Posts: 229 Wisconsin, USA	I have 3 Carter Quadrajet carbs. 17058204 1978 Chevrolet automatic transmission Carburetors I don't know how to decipher the rest of the codes on the carbs. 1. code 618 BHT (this is the original one on my '78 Vette) 2. code 2437 BHT 3. 3077 BHT Does anyone know how to figure out the remaining 3 codes?

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Re: Carter Quadrajet date codes Chevy1778 #278448 05/17/13 09:39 AM
Joined: Dec 2001 Posts: 399 Likes: 1 Lindenhurst, Illinois novasscott Backyard Mechanic
novasscott Backyard Mechanic Joined: Dec 2001 Posts: 399 Likes: 1 Lindenhurst, Illinois	Chevy, go to the Corvette Forum they have been discussing this very topic and I think you will find your answers there. http://forums.corvetteforum.com/c3-general/1188484-quadrajet-number-decoding-question.html also go to: http://www.quadrajetcarbs.com/rochester/ Last edited by novasscott; 05/17/13 09:43 AM. Steve Scott- VCCA Judging Committee 1985 Type 10 Cavalier Conv. 1986 Cavalier RS Conv. https://nirvcca.wordpress.com/

Re: Carter Quadrajet date codes novasscott #281080 06/16/13 11:27 AM
Joined: Sep 2005 Posts: 583 Likes: 1 Peoria, Illinois Daryl Scott Oil Can Mechanic
Daryl Scott Oil Can Mechanic Joined: Sep 2005 Posts: 583 Likes: 1 Peoria, Illinois	I'd also recommend an email or phone call to the Carburetor Shop. They list info for carbs prior to 1974, but the "Mod Quad" from 75-on are similar enough. They also show that the Carter-built Quads are numbered the same as the Rochesters. The Carburetor Shop folks may be able to help with deciphering the other codes you're interested in. Good luck! -Daryl Scott #45848 • 1947 Chevrolet Fleetline Sportmaster Sedan • 1976 Chevrolet C20 Fleetside

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