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keitho64 09-04-2012 08:56 PM

Carter AFB Carburetor Identification and rebuild kit
I am trying to identify a carburetor I have for a Corvair project I am working on. It is a Carter AFB (embossed on the casting) and there is also a tag on the carb with the numbers 2632 and 42009. It is setup with a manual choke.

I found some information that shows it could be a carb off a late 50's Chrysler with dual quads and it is 400CFM. However the number should be 2632S and mine is just 2632. I hope it is a 400CFM as that is what I would like to try.

Do any of you know a place that can assist identifying the carb?
Do any of you know what rebuild kits may fit?

I am a novice with Carter's. I have worked on Edlebrock's (which are Carter AFB 9000 if my memory is correct), Rocherster's and Holley's but never an old AFB Carter.

Thank you,


raguza123 09-04-2012 09:49 PM

is this on the front right flange?
The first 4 numbers are sequence numbers, the next are the carb numbers
What I believe you have there is a 4200S, I believe it's around 475 to 575 CFM's. I might be wrong, does it have a 4 3/4" or 5 1/4" opening for the air horn

raguza123 09-04-2012 10:06 PM

And if it is the carb I am thinging it is, it's from 1964-67 Mopars, I might be wrong but it was for the 383,413,426. I check some other files out tomorrow

keitho64 09-04-2012 10:55 PM

The air horn is 4.75" in diameter.

The 'Carter AFB' is on the body of the carb on the rear left (assuming the primaries (with choke plate) are front facing).

The 2632 and 42009 are on the brass tag which is affixed to one of the screws holding the top of the carb on. Needless to say I am not confident this is the original tag but it may be.

I can post pictures tomorrow if that will help.

Thanks for helping out, I am always amazed and how many variations of carbs are out there.


raguza123 09-05-2012 07:01 AM

do you have any pictures of the carb?
It does sound like a 4200, the 9 maybe an S, sometimes the numbers and letters are not clear.
Your fuel inlet should be in the front right air horn?
and both sets of venturi's will look like the same, the rear set will be attached to the side of the float bowl not the rear as most others are.

keitho64 09-05-2012 12:11 PM

5 Attachment(s)
Here are some pictures. I can post hi resolution pictures on flickr or photobucket if these do not come across good.



keitho64 09-05-2012 12:12 PM

3 Attachment(s)
And a couple more.

raguza123 09-05-2012 12:43 PM

Ok it's looks like a early model, most of them are 575cfm's, I can not see the numbers on the rightside flange, what are the numbers?
and what are the numbers on the tag?
because the flange is the model of carb and the tag is what revisions were made during the production process, this is what I was taught about them.
It looks like a 4200S carter AFB, it's around the 1960-62 yrs. because of the secondary venturis are still on the side of the bowl, not toward the rear.

raguza123 09-05-2012 12:47 PM

Be careful with this one as it has longer metering rods, how I can tell is next to the air horn opening is a screw and a little cover and it has a raised up spot for the power piston.
It also has no secondary air valve like the other AFB's, so you may get a secondary bog, Jetting may need to be reworked a little.

keitho64 09-05-2012 12:59 PM

OK I have confirmed the following numbers:

On the brass tag on carb top: 2632 and 4200S (you all were right)

On the side of the carb body: 0-1431 and then all the patent numbers.

On the carb base plate by the idle mixture screws it is J2 4200S

On the choke pull off arm: 180-137

Then is also has Carter AFB and Made in USA on carb body.

My plan is to put this on a Corvair until winter / early summer when I hope to move to a throttle body efi system.

Thank you,


raguza123 09-05-2012 01:06 PM

You'll find the kit to rebuild it at Mikes carbs( or your local Napa will have it too.
Get yourself a lot of carb cleaner and clean every hole you can see, spray it with carb cleaner, then blow it out with air, or soak it in Chem -dry, but this stuff is nasty on the body but it'll clean the carb.
and she'll run good for you and will be dependable too.
I own 1 newer one and 3 older ones Afb's and they work. One thing check to make sure idle mixture screws aren't pitted if they are they do make them, Walker Products sells them.

keitho64 09-06-2012 08:52 PM

I ordered the kit from Mikes yesterday. I have the carb soaking in cleaner now until the kit comes in. I hope to have this done next weekend. I will post pictures when it is done.

Thanks for the tip on Mike's not only did they have the kit but I was able to get a manual and they have all the specifications / settings for the rebuild process.

raguza123 09-06-2012 09:15 PM

I'm happy to help, Mikes will have it out to you quickly. your Welcome
A trick to help later with the carb, should it ever need a rebuild again, spray all the gaskets with WD40 before assembling it. and remember to spray WD40 in the pump bore before assembling it.

keitho64 09-06-2012 09:39 PM

I never heard of the WD40 on the gaskets or accelerator pump, that sounds like an excellent idea!

raguza123 09-07-2012 05:28 AM

Wd40 oils the gaskets up so they won't stick to the carb, as much as an untreated one does,
and it helps the Accelerator pump to seal a little better and move easier in it's bore.

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