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Old Feb 14, 2013 | 05:46 PM
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Default Quadrajet numbers
I have a extra carb that I bought with my 74 vett. I believe it's the original but how will I know for sure ?? Where it says quadrajet there's 2 sets of numbers
7044211fd
2993

Anyone know what these mean
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Old Feb 14, 2013 | 06:02 PM
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That's the correct part number carb for a '74 Corvette with L82 and 4 speed. The 2993 means it was made on the 299th day of 1973 which was October 26.
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Old Feb 14, 2013 | 06:11 PM
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Oh wow good info then it must be off my car I would love to see what carb is in there now I will have to check it once I see my car in the spring

Thanks
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Old Feb 14, 2013 | 06:16 PM
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We're carbs set up differently for auto vs manual. I wonder why the previous owner replaced it
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Old Feb 14, 2013 | 06:32 PM
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Originally Posted by redwhitekat
We're carbs set up differently for auto vs manual.
Yes. Usually it was a matter of jet sizes.
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Old Feb 14, 2013 | 08:08 PM
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Originally Posted by Easy Mike
Yes. Usually it was a matter of jet sizes.
You'd probably have kickdown linkage on an auto carb vs a manual as well, no?
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Old Feb 14, 2013 | 08:18 PM
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I'm not sure what the kick down linkage is bit I do notice why I'm on the hwy and I floor the gas peddle it does seem to almost have an overdrive or something just feel an extra kick to it
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Old Feb 14, 2013 | 08:45 PM
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Originally Posted by redwhitekat
I'm not sure what the kick down linkage is bit I do notice why I'm on the hwy and I floor the gas peddle it does seem to almost have an overdrive or something just feel an extra kick to it
It's an extra cable that the transmission uses to initiate a downshift when the throttle is open a certain amount.
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Old Feb 14, 2013 | 09:27 PM
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Originally Posted by redwhitekat
I'm not sure what the kick down linkage is bit I do notice why I'm on the hwy and I floor the gas peddle it does seem to almost have an overdrive or something just feel an extra kick to it
That's the other 2 barrels kicking in!
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Old Feb 14, 2013 | 09:44 PM
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Originally Posted by Billem
That's the other 2 barrels kicking in!
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Old Feb 14, 2013 | 09:47 PM
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Well I'm not sure what's wrong with it or why they took it out hopefully nothing major is screwed as I'm shipping it to Lars and he will have to take a look at it
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Old Feb 15, 2013 | 06:56 PM
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Looking forward to going though your original carb - it should run very well for you once set up correctly. In addition to the carb, make darned sure you have your timing and timing advance system correctly set up - the timing will have a bigger effect on performance than the carb, in most cases. If it's not right, it will make it seem as if you have carb problems: "90% of all carb problems are ignition system problems." You can e-mail me for my timing papers for complete setup instructions.

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Old Feb 15, 2013 | 07:01 PM
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Thanks Lars back in the summer I had my distributor gear replaced as my tach wasn't working and also had the timing set up properly by a very good shop here in town.
So that should be good I just don't really know if I have the proper jets or setup on my current carb. That's why I want to put the original carb back in
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