I have recently seen various 1963 model Ford ignition distributors advertised for sale as Cobra parts that were not. I made a reference list of known units applicable for street and race Cobra over time.
To be specific, FoMoCo® models were all made as fully mechanical advance dual point assemblies.
Experimental High Performance 260: FoMoCo XF 139764 (experimental assembly) with non-functional vacuum advance unit used as block off for a large slot in housing.
High Performance 260: FoMoCo C2FF-12127-A with empty non-functional vacuum advance unit used as block off for a large slot in housing.
1962 Experimental High Performance 289: Could have been prototype types of either the C3OF-12127-D or C3OF-12127-F as examples of them dated in 1962 have surfaced for sale. They had non-functional vacuum advance units used as block offs for the large slots in housings.
High Performance 289 1963½ models until phased out circa mid-May 1963: FoMoCo C3OF-12127-F with empty non-functional vacuum advance unit used as block off for a large slot in housing.
Shelby American racing 260 and early 289 engines, "Spalding Super Flame Thrower Ignition"
High Performance 289 circa mid-May 1963½ onward and 1964 models through July 1964: FoMoCo C3OF-12127-D with no provisions for a bolt on vacuum advance unit.
High Performance 289 five bolt engines built August 1964 and six bolt automatic transmission engines built September 1964: FoMoCo C5OF-12127-E with no provisions for a bolt on vacuum advance unit.
Thanks Dan for contributing to an expanding knowledge base!
Quote from: shelbyluva on July 29, 2023, 06:14:57 PM
Thanks Dan for contributing to an expanding knowledge base!
You are welcome.
(PS The best time to ask questions about parts is before purchase.)
Thanks again Dan. Guy advertising a distributor now as for an early Cobra, and this help verify my hunch it wasn't.
Rich