Wanted: C3OF-9510-AJ Carb
 

I know this is an extreme longshot, but if I don't ask then there may be something out there I'm not aware.

I'm looking for an original unrestored C3OF-9510-AJ carb. In the process of restoration of CSX2410 and a key component missing is the carburetor. If you have one stashed away or know of one, any leads are appreciated.

In addition, if you have other original parts which you may have interest to sell with the intention of them being utilized into the restoration of an original chassis, we're looking for a significant number of parts.

Not to throw doubt to your part number, but just so you know, I also see
C3OF-AB (autolite, also AJ)
or
C3AF-9510-B (optional holley)

For your cars date range.

Dan Case is who I would reach out to if I was you. Maybe post it in the want to buy subforum at the saacforum as well.

Bill S.

A Ford 4100-A C3OF-AJ carburetor assembly is correct for engines in the serial number range. Most likely date codes on assembly tags would be 3MA or 4AB.

Thanks Bill, yes Dan is intimately familiar on the build and is based on his input. We have looked at car and engine SNs which are documented to be original to review original parts installed and indicates the C3OF-AJ to be correct.

Thanks for the recommendation, I will plan to post on SAAC and few others as well.

Keep looking, one will show up! It only took me 10 years to find a C4OF-AT but I did it, with a little help!
Larry

Does it look like this?

Unrestored mid 1964 model year C3OF-AJ carburetor.
 

The C3OF-AJ is a Ford 4100-A Series 4V carburetor. This is an extra nice barely used unrestored one.

http://www.saacforum.com/gallery/274-091221102542.jpeg


Most available for sale the last twenty years that I have seen or worked on were nowhere near as nice condition wise and most are missing parts. Many of the used ones for sale have been robbed of parts to complete other carburetors. The only extremely rare original small part besides the assembly tag is the 1963 brass version of the Holley® spark vacuum port plug.

Standard Cobra Carburetors 1962-1965
 

Standard engines in new street Cobras meant using Ford 4100-A type carburetors Ford Motor Company installed in the Cleveland Ohio engine plant. Optional carburetors and ancillaries are not covered in this file.

Experimental High Performance 260 (XHP-260) Engines
Engineering prototype assembly, automatic choke. (New Cobra picture 1962 photographer unknown.)
http://www.saacforum.com/gallery/274-091221111906.jpeg




High Performance 260 (HP260) Engines
C3AF-9510-S automatic choke. (The assembly tag is missing in the picture below.)
http://www.saacforum.com/gallery/274-091221112057.jpeg








High Performance 289 (HP289) Engines
C3OF-9510-AB automatic choke, start of HP289 engine production March 1963 until sometime in mid to late May 1963.
(no picture available)

C3OF-AJ (1963¾ assembly version) automatic choke, sometime in mid to late May 1963 through about through June 1963 engines. (No HP289 engines were made in July 1963.) Probably used in early 1964 model year engines but no intact Cobra has been available to study.
http://www.saacforum.com/gallery/274-091221113209.jpeg







C3OF-9510-AJ (1964½ assembly version), about late November 1963 through about the second week of May 1964. (Ford changed some parts and or finishes in 4100-A series carburetors between 1963¾ and 1964½ model year versions. Most changes are not readily detectable in a single picture.)
http://www.saacforum.com/gallery/274-091221102542.jpeg









C4OF-9510-AL manual choke, used on very late 1964 model year HP289 engines made about the third week of May 1964 through July 1964. HP289 engines, five bolt ones, were introduced into Ford Fairlane and Mustang production using manual choke carburetors about June 8, 1964. (I have not come across pictures of Cobra with an engine made in this time frame with original engine completely intact to study)

http://www.saacforum.com/gallery/274-091221110534.jpeg


C4OF-9510-AL manual choke, the 48 strange HP289 engines (an odd mix of 1964 and 1965 model year parts) Ford Motor Company made for Shelby American, Inc. for new Cobras in late August 1964.







C4OF-9510-AT manual choke, one of the rarest production carburetor assemblies Ford ever released, used in 13 of the 15 late Cobras with 1965 Fairlane automatic transmission HP289 engines.
http://www.saacforum.com/gallery/274-071020184005.jpeg







All of these assemblies are 1.12 size carburetors. Ford called them 600 c.f.m. carburetors at sea level and standard conditions with no air cleaner. In use most independent tester obtained mid 500 c.f.m. values (no air cleaner).

PM sent. Jim Maxwell