All V8s in the 64 1/2-66 production years had Autolite Carbs. The A,D, and K Code cars all used Autolite 4100 series carbs, but the K codes carb was diffrent. Its floats were diffrent, along with the size jets, the Nozzles were also diffrent.
But it was still called an Autolite 4100. I believe K code cars didnt have vacum advance, and an easier way to tell is by sound. The K code is a Solid lifter cam 289. They make a very distinct sound as to Hydrualic Cam 289's.
Also, the Freeze plugs were screw in also.
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64 1/2 "D" code Red Mustang Coupe. 289, C4, Mallory duel point. Ported & Polished 65 heads shaved .01 with 351 valves, 11:1 comp, 1.7:1 rockers, blue wolverine lumpy cam, modified 4100 Hipo 4 barrel. GT Apperance pkg. And to many others to list
2000 Perf Red Mustang GT. 5spd. BBK Underdrive pulleys, Flotech off-road H pipe. Hurst T-Handle, 40 series Flowmasters, Steeda Tri-Ax
64 1/2 red 6cyl coupe. Future resto.
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