I started looking for AFBs to use for the dual quads a couple of weeks ago. Personally I usually like to find a pair of used carbs that are matched and build them myself. I usually have at least some AFBs sitting on the shelf but over the last few years a lot have been used or sold so I didn’t have anything suitable on hand. The local wrecking yards were picked over years ago so I went on E Bay and Craigs List to see what was out there. It’s been a few years since I've bought any and boy did I get a bit of sticker shock.

There was a swap meet in Tucson last Saturday that I was going to anyway so I figured I'd see if I could find anything up there. There were several used AFBs around but most sellers were asking E Bay prices. I did find one Carter 9635S that the guy was asking $60 on (about twice what I’d normally pay for a builder) but I bit the bullet and bought it anyway……..if I didn’t find a mate for it I figured I could built it and either keep it on hand or sell it. I found the “bargain of the day” a little later when a guy set up across the road from me (selling mostly flea market stuff) and set out a pretty grungy looking 9625S for $5.


sm2 by M Patterson, on Flickr


There are a couple of minor external differences between the 9635 and 9625 but they are both 625 CFM and internally identical.

They both cleaned up well and I had enough parts on hand to build one so I only had to buy one kit. I verified they were both jetted the same and have the same step rods and springs so that will be my starting point.

I built the carb I’m going to be using as the primary carb back to the way it originally was and removed the choke from the carb that will be used as the secondary carb. It happens the carb spacing on the factory manifold is just right to use an aftermarket fuel line for a Holley dual feed double pumper, which takes care of having to build fuel lines. The carb spacing is the same on both the First Gen Chrysler Hemi and the factory B and RB cast iron in line dual quad manifolds the fuel line will work for either

DQ by M Patterson, on Flickr

So with the cost of the carbs and 1 kit, I’m into the carbs for about $100……sometimes life isn’t not too bad.