Carter QJet for Early Build Date

[Norm C.]

The build date on my Carter Quadra Jet is a G1 I've seen both G1's and K1's as rare at they are. My question is, did Carter use any other month dates in 71 besides G's & K's? Thanks in advance for anyone's help or share knowledge!!

[Mark E.]

Re: Carter QJet for Early Build Date

The build date on my Carter Quadra Jet is a G1 I've seen both G1's and K1's as rare at they are. My question is, did Carter use any other month dates in 71 besides G's & K's? Thanks in advance for anyone's help or share knowledge!!

Norm,

Where do you see G1? Every Q-Jet I've seen uses a Julian date followed by one digit for the year. For example "1270" is the 127th day of 1970 or 1980. The date stamp is next to the carb's PN stamp on the left side of the fuel bowl.

[Terry M.]

Re: Carter QJet for Early Build Date

Norm,

Where do you see G1? Every Q-Jet I've seen uses a Julian date followed by one digit for the year. For example "1270" is the 127th day of 1970 or 1980. The date stamp is next to the carb's PN stamp on the left side of the fuel bowl.

Mark
Q-jets built by Rochester use the Julian system you describe. Q-jets built by Carter for Rochester use the Month/Year dating system described by Norm.

Norm
It is possible that Carter built those carburetors only during the two months you have observed. Input from others may expand that production window. Let's see.

[Patrick H.]

Re: Carter QJet for Early Build Date

I've got a G1 in my collection, but nothing earlier from Carter.
Very common for 72 model year cars, though.

[Leonard M.]

Re: Carter QJet for Early Build Date

Here are pictures of 3 1971 built Carter carbs. G1, H1 and M1. One has been recently sold, one is on my car and the third is not for sale at this time.
G1 date.jpgH1.jpgM1.jpg

[Norm C.]

Re: Carter QJet for Early Build Date

Thanks all for responding!!
To Terry's question, I'm not sure how they built their Carbs back then. Although Leonard's pic of his G1 on a 7042217 for a 454 gives me a little more optimism that 7042203's were built at the same time as 7042217's. That also could suggest there are at least 4 different months, G, H, K, & M that Carter built the Qjets.

To Patrick's comment, I've noticed that too. I surmise that since the 71's have different Carb numbers, and they would have ceased production that summer to switch to the 72's, that G (July) is most likely the earliest production date. Is your 72 an early build date also?
Learning of the H month helps my search, but the M is beyond by build date. Now we can only speculate there's an H is also out there stuck away forgotten on a shelf somewhere.

To all horrders, out there,,,WAKE UP, there's $$$$ in dem old carbs!!!

Thanks for the great pics Leonard!!!!

[Mark E.]

Re: Carter QJet for Early Build Date

What do the letters mean? Is A January or August?

[Norm C.]

Re: Carter QJet for Early Build Date

Mark,
Carter used the whole alphabet for their Qjet carbs. A = January & making the G1's in July. It can be confusing at times because, Carter built Qjets covered 2yrs of Vettes in one year. Adding to the confusion, GM changed the carb part #'s for each year. Thus it seems likely that in 71 A-E were for late 71's, F may have been a switch over month and or G's could have been for both, but I'm speculating they switched to the 72 part numbers resulting in the G1's are the early 72's. i.e like Patrick's and mine the date is G1 = July 71, then in January Carter starts the alphabet over so the later 72's starting with A are followed by a 2. So the 72 is correct to have both 71 and 72 Carter build dates. I've seen lots of A2's out there.

[Patrick H.]

Re: Carter QJet for Early Build Date

I would have to check what number is on the carb I own.

Of interest, it was on a very late 1971 and not an early 1972.

[Norm C.]

Re: Carter QJet for Early Build Date

Patrick,,, that would be really an interest point, as the the judges guide shows the 7042203 was for 72 only. Pg 123 of the 6th edition. Please let us know what number you have. If its a different number, then it suggests that they were making two different part #'s in the same month for two different years of Corvettes????

[Tom L.]

Re: Carter QJet for Early Build Date

Just looked, my 7042216 carter built carb is dated H1. Can take a pic if it helps.

[Mark E.]

Re: Carter QJet for Early Build Date

Patrick,,, that would be really an interest point, as the the judges guide shows the 7042203 was for 72 only. Pg 123 of the 6th edition. Please let us know what number you have. If its a different number, then it suggests that they were making two different part #'s in the same month for two different years of Corvettes????

I believe I've seen two model year carbs made in the same month with Rochester Q-Jets. For example, 7040205 and 7041205 made in the same month. But I don't recall if I've seen a specific Julian date for a newer model year precede the date for the prior model year.

[Patrick H.]

Re: Carter QJet for Early Build Date

I would have to check what number is on the carb I own.

Of interest, it was on a very late 1971 and not an early 1972.

7042202 (i.e. 1972 base motor automatic) date G1
It was on a June 1971-built 1971 coupe. I obtained it from the original owner in June 1996.

Did they put 1972-spec carbs on late 1971s? I have no idea. I've always wondered about that, though I've never seen another.

[Norm C.]

Re: Carter QJet for Early Build Date

Tom,,, a pic would be great, the H1 suggests yours, like mine was an early build date and is consistent with the JM. What is the build date for yours?

[Tom L.]

Re: Carter QJet for Early Build Date

This is not the factory installed carb for my early October '71 build. I was lucky enough to find this carb and some other rare dated parts, like the tipped fan and a bunch of other stuff, from a guy that made his '72 into a street rod?? Don't have the date of his car but he told me it was a late September build. Date on the fan was also F71 so it had to be an early car.