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Qjet Application Code Help

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Old Dec 8, 2006 | 05:19 PM
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Default Qjet Application Code Help

A Qjet 7029202 DH?

70 = Manufacturer's code, Rochester Products Division
29= 1969
2= Quadrajet
0= Chevrolet
2= ?

DH= ? Corvette Black Bookm does not have the last Alpha characters defined but you see these advertised on ebay a great deal. Any good websites that can help with this.
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Old Dec 8, 2006 | 05:24 PM
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Originally Posted by SoCalErv
A Qjet 7029202 DH?

70 = Manufacturer's code, Rochester Products Division
29= 1969
2= Quadrajet
0= Chevrolet
2= ?

DH= ? Corvette Black Bookm does not have the last Alpha characters defined but you see these advertised on ebay a great deal. Any good websites that can help with this.

even = auto, odd = manual...2=auto trans
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Old Dec 8, 2006 | 07:33 PM
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Anyone have any ideal what the DH denotes?

On my carb I have 70292207 and to the right I have 1911. I understand the carb is for a 350/360 mt but what is this 1911 number?
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Old Dec 8, 2006 | 07:39 PM
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Typo on the 360hp? should be 350. the 1191 is a julian date code. Your 1969 carb,(7029207), was manufactured long after 1969. Well into the 90's in fact. So pick a decade on that 1191 date. 119 day of 71, 81, 91???
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Old Dec 8, 2006 | 07:45 PM
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Good information, BADDDDDDD news. I thought I might have something to sale later on. Trying to get a carb for my feb 69. Waht would the Julian number be for a Feb 15, 69 car?
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Old Dec 8, 2006 | 08:02 PM
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This a test? I'll say 0469.(46th day of 69)

BTW that carb was GM's "old faithfull". Great carb, with a variety of use.
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Old Dec 8, 2006 | 08:06 PM
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take a look at ebay item#120060636690. on the small pictures it shows the stamp with the DH. I do not see a Juliand date however.

Also on your first response I thought the first number was the year of the decade?

Do all carbs have this date as the photo on evbay does not have one?
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Old Dec 8, 2006 | 08:24 PM
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Originally Posted by SoCalErv
take a look at ebay item#120060636690. on the small pictures it shows the stamp with the DH. I do not see a Juliand date however.

Also on your first response I thought the first number was the year of the decade?

Do all carbs have this date as the photo on evbay does not have one?

119 day with a 1 year=1191. Last digit is the year

I can't say for certain if all the 7029207's had date codes. If it were me, I'd be happier if my carb had one. Then I would know the carb would have to be correct time wise. Thats just me.
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Old Dec 8, 2006 | 11:15 PM
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Here is a great website that explains the codes

http://www.carburetion.com/quadnumber.htm
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Old Dec 9, 2006 | 04:15 AM
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Originally Posted by SoCalErv
Anyone have any ideal what the DH denotes?

On my carb I have 70292207 and to the right I have 1911. I understand the carb is for a 350/360 mt but what is this 1911 number?
On my carb i have 7029202 and A9 DH. I think its Januar 9. I have no ideas what DH means.
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Old Dec 9, 2006 | 06:13 AM
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DH etc are just customer code from what I have learnt.
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Old Dec 9, 2006 | 06:18 AM
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Produced 1976 or later
17080243
2629 CNO

170 - Prefix Code
8 - Decade Produced
5 - 1976-1979 (1705)
8 - 1980's (1708)
0 - Year Produced
2 - Model
0 - Monojet (1 bbl) Federal standards
1 - Two jet (2 bbl) Federal standards
2 - Quadrajet (4 bbl) Federal standards
3 - Monojet (1 bbl) California standards
4 - Two jet (2 bbl) California standards
5 - Quadrajet (4 bbl) California standards
6 - VariJet (2 bbl) Fed
4 - Division.
0, 1, and 2 all indicate Chevrolet.
4 - Buick
5 - Olds
6,7 - Pontiac
3 - Transmission
Even numbers - Automatic Transmission
Odd numbers - Manual Transmission
CNO - Customer Code
2629 - Date Code
262 - 262nd day of the year
9 - Year

Pre-76
7028219
DG 1938

70 - Prefix code. "70" will appear on all late '60's Rochester Carburetors.
2 - Decade produced.
2 - 1960's
3 - 1060's with A.I.R.
4 - 1970-1975
8 - Year produced. 8 = 1968
2 - Model
0 - Monojet (1 bbl) Federal standards
1 - Two jet (2 bbl) Federal standards
2 - Quadrajet (4 bbl) Federal standards
3 - Monojet (1 bbl) California standards
4 - Two jet (2 bbl) California standards
5 - Quadrajet (4 bbl) California standards
6 - VariJet (2 bbl) Fed
1 - Division.
0, 1, and 2 all indicate Chevrolet.
4 - Buick
5 - Olds
6,7 - Pontiac
9 - Transmission
Even numbers - Automatic Transmission
Odd numbers - Manual Transmission
DG - Customer code.
1938 - Date Code
193 - 193 rd Day of the year
8 - Year
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