Looking for a compatible parts carb for said tubes. Lots of Autolite 4100 carbs on eBay, just don't know which might have usable tubes for my C6ZF-F?
Any carb Guru out there know?
I guess you mean what Ford Motor Company called a "support" under group number 9A523 (a.k.a. booster, booster venturi, auxiliary venturi, booster cluster, venturi cluster) ? The “support” assemblies include the auxiliary venturi, emulsion tubes, and assorted air bleeds. The primary support also contains the accelerator pump jet nozzles.
Bob Mannel’s excellent book lists the “MA” (C4OZ-9A523-C) primary support and the “BA” (B8AZ-9A523-L) secondary support for a C6ZF-9510-F carburetor.
The “MA” stamped assembly is only listed in his book for some 1965-67 versions of HP289 carburetors. They are pretty rare. I personally have only come across two of them ever in carburetors for cars with automatic transmissions.
The “BA” stamped assembly is fairly common. Three or four were for sale on eBay® during the last two weeks from looked okay to new old stock in the box.
Buyer beware: It is wise to ask exactly what is in any carburetor core you are considering buying. In the last ten years it has become real common for somebody to remove supports applicable to HP289 engines from cores and replace them with something else. Three of the last four HP289 specific carburetors I bought had at least one support replaced and at least one pair of main jets replaced with more common ones before sale. The best looking (really nice looking lightly used with faint patina) core I bought had both supports and one pair of the main fuel jets replaced with place holders while it sold. (The body, cover assembly, and ancillary exterior parts were is such excellent condition I could stand to find interior parts that were replaced.)
Dan