What carb should be on my 64 Wildcat 425ci Nailhead assuming all is Stock? it is a single 4 barrel carb. I want to order a rebuild kit for it, but dont know what to order it for! The numbers on the front are 1187 9637 SA Even if those mean nothing, what carb should be on it? Thanks!
Should be a Carter 3665. It looks like you may have a replacement carb. The numbers are stamped on the mounting foot on the front passenger side of the carb base. Larry
ok, so is it the right size for the car? How many cfm is stock, and what is it for this one? Also, What numbers do I give the parts guy for a carb kit? Thanks!
CFM Venturi Diameter Bore Diameter primary secondary primary secondary -------------------------------------------------------- 400 1 1/8 1 1/4 1 7/16 1 7/16 500 1 3/16 1 1/4 1 7/16 1 11/16 575 1 1/4 1 9/16 1 9/16 1 11/16 625 1 3/16 1 9/16 1 7/16 1 11/16 750 1 7/16 1 9/16 1 11/16 1 11/16 No idea as to what the one you have goes to. You have a generic carb now. Once the original correct carb is passed in as a core, it's gone forever. Most store rebuilts for lack of a better word are garbage. Components are used out of a pile that are not designed for the engine it's to go on. The parts are tyically not kept in order and are taken out of bins. This of course would not apply to a carburetor restorer, but an assembly line type parts house. The carbs are consolidated to allow for a greater range of application. This means they'll specify the carb will fit more years of a certain engine etc. This is probably what you have now. I have found incorrect air horns, jets and metering rods. Carbs have drilled passages and metered orifices for the engine it was designed for. The passages have restrictions pressed into them and are drilled to size for correct fuel and air delivery as needed. Some cylinders may run richer or leaner during idle, part throttle or main metering operation. The carburetor is designed to correct this. HTH, Steve
It's a 625 cfm 'generic', Chevy linkage, 9637 is the model number. Carter (Federal Mogul) only has one kit out there for it, easy to find. One was on my 64 425 Riviera when I bought it.
