OK Denis, you're going to love this one......
Ford Master Parts List, section 95, page 36 lists the C6ZF-C carb as fitting a 1968 Mustang (F body code) with 289 and "open emission".....but here's the kicker.....wait for it.... come on, keep waiting.....litle funny symbol next to the model.....denotes....CANADA ONLY!
They changed the carb so your car could go to Canada!!!! WOW!!!
You have a very rare carb if you indeed do have it! The application does not denote hipo or "special" in that particular listing!
However, digging deeper into page 37 we find the C6ZF-C turning up as the proper carb (replacement or original) for 65-67 Mustang "special" and 1965 Fairlane "special" models. (This may apply to Cougar and Comet accordingly....but only maybe... would need to dig into a L-M copy of the parts books...)
In 67 we find another Mustang "special" (HiPo) carb, C7ZF-C, but interestingly, also for 1967 two carbs with 68 numbers are shown, C8ZF-J and C8ZF-K. Manual choke and T/E. (these are "Identification" numbers or what you would find stamped into the base plate of the carb, or the small metal tag if so affixed, or perhaps both!)
What I would expect to find on a 1968 manual trans (M/T), emission equipped (T/E) 302, ala Mustang/Cougar/Fairlane, would be carb# C8ZF-C which is an Autolite 4V carb. This is the correct carb for the engine which was spec'd for the Goose as most of us should have had....and is what others have reported being on their cars.
There is only one 302 4V Holley carb listed as a C9OF-R, which is a 600CFM center pivot bowl model, available for 68-71 Fairlanes, Mustangs, and Cougars. I think this was an "over teh counter" factory carb for the aluminum intake manifolds that you could get......on a Shelby or for Cougar or Mustang.
So, as to the "correctness" of what should be on that invoice for 1266, I would doubt that a car that late, and being a 302, would have had that carb on the engine when it was installed. Ford would never have put that carb on a 302 since it was never spec'd for it.
Besides, your car was finished by the Germans....and they would have dropped engines in place....not mix and match old parts from 3 years earlier in production! I suspect a transcription error......by someone sitting in Italy.....making up paperwork...
IF by some odd chance you still have an Autolite carb on your car, the date code on it would need to be close to the rest of the casting dates from your block and heads etc...to be "correct". I am not saying that a car couldn't have a date correct C6ZF-C carb on a 302...... as spares were sold over the counter.....for years....but it would be unlikely...or darned coincidental! I would expect the C8ZF-C model or a later replacement.
That's what the book says!!! Can't say if it is correct....it's only a guide!!!! ....or if you were reading the Ford parts book in Italy, it would be a "suggestion"!
Ciao!
Steve
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