If you have a Rochester carburetor with the correct number (7044221) and date code for your '74 - LS4 - 4spd Corvette, I'd be interested in learning what two letter broadcast code, or rochester assembly plant code (?) is stamped on it. The '74 & '74 TIM & JG refers to these two letters as Broadcast Codes without a description of exactly what the Broadcast Code letters represent. Based on the Judging Guide and this new information, it's raised a point that requires further clarification. Any and all insights and documented information are welcomed. Thanks.
Patrick Hulst (16386)View Public ProfileSend a private message to Patrick Hulst (16386)Send email to Patrick Hulst (16386)Find all posts by Patrick Hulst (16386)Add Patrick Hulst (16386) to Your Buddy List
#5 
May 5th, 2008, 09:04 AM
William Clupper (618)
NCRS Past President
Join Date: June 1st, 1975
Posts: 3,069
Re: 1974 Corvette Carburetor #7044221 Quadrajet-Jet 454
That code is indeed the plant code per the Rochester literature, and again I would have to believe that is for the Carburetor plant where it was manufactured as opposed to any specific vehicle assembly plant. Rochester operated plants in several locations in the late 60's-early 70's timeframe, and the plant code would give them the ability to execute a campaign based on the plant code if a specific plant had a manufacturing defect that required a recall.
William Clupper (618)View Public ProfileSend a private message to William Clupper (618)Send email to William Clupper (618)Find all posts by William Clupper (618)Add William Clupper (618) to Your Buddy List
May 5th, 2008, 09:04 AM William Clupper (618)
NCRS Past President
Join Date: June 1st, 1975
Posts: 3,069
Re: 1974 Corvette Carburetor #7044221 Quadrajet-Jet 454 That code is indeed the plant code per the Rochester literature, and again I would have to believe that is for the Carburetor plant where it was manufactured as opposed to any specific vehicle assembly plant. Rochester operated plants in several locations in the late 60's-early 70's timeframe, and the plant code would give them the ability to execute a campaign based on the plant code if a specific plant had a manufacturing defect that required a recall.
#6
May 5th, 2008, 10:05 AM
Lyle Chamberlain (24961)
Extremely Frequent Poster
Join Date: September 1st, 1994
Posts: 1,974
Re: 1974 Corvette Carburetor #7044221 Quadrajet-Jet 454
Bill
As a member of the 73-74 team we have found different codes for all the carburetors used in 73-74 and so far each part number has a different code. I notice we have the DX code Ray found on a 7044221 listed as a LS4 auto and NB2 (Calif. delivered) 7044505. I would be more interested in the part number and the date when judging but if what we thought was a broadcast code is a plant code I would like to know for sure and Ray's example makes your information food for thought.
Would you know if all thease codes were all plants?
FT,FS,FV,FU,EV,ET,FB,FA,FD,FC,HR,FX,FL,DX.
Thanks Lyle
Lyle Chamberlain (24961)View Public ProfileSend a private message to Lyle Chamberlain (24961)Send email to Lyle Chamberlain (24961)Find all posts by Lyle Chamberlain (24961)Add Lyle Chamberlain (24961) to Your Buddy List
May 5th, 2008, 10:05 AM Extremely Frequent Poster
Join Date: September 1st, 1994
Posts: 1,974
Re: 1974 Corvette Carburetor #7044221 Quadrajet-Jet 454 Bill
As a member of the 73-74 team we have found different codes for all the carburetors used in 73-74 and so far each part number has a different code. I notice we have the DX code Ray found on a 7044221 listed as a LS4 auto and NB2 (Calif. delivered) 7044505. I would be more interested in the part number and the date when judging but if what we thought was a broadcast code is a plant code I would like to know for sure and Ray's example makes your information food for thought.
Would you know if all thease codes were all plants?
FT,FS,FV,FU,EV,ET,FB,FA,FD,FC,HR,FX,FL,DX.
Thanks Lyle
#7
May 5th, 2008, 05:16 PM
William Clupper (618)
NCRS Past President
Join Date: June 1st, 1975
Posts: 3,069
Re: 1974 Corvette Carburetor #7044221 Quadrajet-Jet 454
I'm sorry Lyle, but the information I have only indicates (in three separate Rochester Catalogs) that the two digit code is a plant code. I do not have a document at hand regarding what the plant code breaks down to, nor have I ever seen one. I've attached the Rochester explaination of the stamped (65-67 era) codes as well as the 68-up "rolled" codes of the type we are discussing here. The service documentation may go beyond what I have here as this is a sales/application catalog reference, but I thought it significant that all the information regarding the two-digit code is as an assembly plant code, and also references a "shift code" That is what drives my thinking that the information was an identifier to control the damage in the case of a potential recall for emissions in that the problem, if manufacturing related could be tracked to a specific plant and shift, thus limiting the number of carburetors that would be actually removed and replaced in the event of a problem.
May 5th, 2008, 05:16 PM William Clupper (618)
NCRS Past President
Join Date: June 1st, 1975
Posts: 3,069
Re: 1974 Corvette Carburetor #7044221 Quadrajet-Jet 454 I'm sorry Lyle, but the information I have only indicates (in three separate Rochester Catalogs) that the two digit code is a plant code. I do not have a document at hand regarding what the plant code breaks down to, nor have I ever seen one. I've attached the Rochester explaination of the stamped (65-67 era) codes as well as the 68-up "rolled" codes of the type we are discussing here. The service documentation may go beyond what I have here as this is a sales/application catalog reference, but I thought it significant that all the information regarding the two-digit code is as an assembly plant code, and also references a "shift code" That is what drives my thinking that the information was an identifier to control the damage in the case of a potential recall for emissions in that the problem, if manufacturing related could be tracked to a specific plant and shift, thus limiting the number of carburetors that would be actually removed and replaced in the event of a problem.