1966 K code carby

[usapony]

Looking for a Autolite carb to suit a 1966 K code 4 speed must be correct carb for the K codes with manual choke . Thanks

[ITHERTZ]

I hope you find one - these have become quite expensive and the crooks have been out in full force trying to sell fakes.  Hopefully you know how to identify the real deal from the clones.  It all comes down to the choke stop (:

[Fast Fords]

Not a '66 but I have a real nice C4OF-AL hipo carb that I would sell....Greg.

[gt350hr]

   4 speed Autolite HiPo carbs "should " be in less demand as they ( almost) never were used on a GT350. The automatic version has become very expensive because it was and YES by all means make sure it's not a CLONE. Some misinformed still associate the 4 speed carb with a GT350 and the only possible use would have been a FACTORY supercharged 4 speed '66. The registry has those cars noted.
   Randy

[6s1640]

The carb is C6ZF-C for standard transmission and C6ZF-F for automatic.  The standard transmission carb's are much easier to find, but will still require some patients.

This one just sold recently, February 2019, for $1100 with shipping.

https://www.ebay.com/itm/C6ZF-C-Hi-Po-289-Autolite-4100-Carburetor-1-12-K-Code-Ford-Mustang-Original-/283365927586?epid=1438113060&hash=item41f9eceaa2%3Ag%3AuuYAAOSw%7EbhcWI4J&vxp=mtr&nma=true&si=o3a0q%252BGGIP845MLSDFjebkH5PdU%253D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047675.l2557

Best of luck

Cory

[Duncan66]

I have one, but I am not sure if I want to let it go, and for how much...

[Duncan66]

There is an eBay 4100 C8, new, for $2900 I think....

[68stangcjfb]

   4 speed Autolite HiPo carbs "should " be in less demand as they ( almost) never were used on a GT350. The automatic version has become very expensive because it was and YES by all means make sure it's not a CLONE. Some misinformed still associate the 4 speed carb with a GT350 and the only possible use would have been a FACTORY supercharged 4 speed '66. The registry has those cars noted.
   Randy

What carb enclosure would have been used on these cars?

[gt350hr]

    The standard Cobra air box was used on "production" supercharged cars. Paradise Wheels has them as they own the early Paxton line .

[68stangcjfb]

Paxton made a specific box for the 4100 carb. Is that the box that the factory cars used?

[gt350hr]

    The box was a multi purpose part. It would accept a Holley or a Carter as well. The reason a Holley and Carter weren't used "was" the lack  of nitrophyl floats . Brass floats ( when inside the box) would collapse under boost. The Autolie 4100 did have them. SAI did NOT want a "blow through" design that could use a carb with brass floats.  Making the box to fit LeMans bowls ( which didn't use hollow brass floats) would have caused distributor clearance issues.
    Randy

[Silver Bullitt]

I hope you find one - these have become quite expensive and the crooks have been out in full force trying to sell fakes.  Hopefully you know how to identify the real deal from the clones.  It all comes down to the choke stop (:

Not full proof since I have seen that rib faked on at least one HiPo Autolite 4100 clone so far for a fact!

[ITHERTZ]

I hope you find one - these have become quite expensive and the crooks have been out in full force trying to sell fakes.  Hopefully you know how to identify the real deal from the clones.  It all comes down to the choke stop (:

Not full proof since I have seen that rib faked on at least one HiPo Autolite 4100 clone so far for a fact!

Really?!  Wow, the lengths some would go through to fake people out of their money.  There is still another easy tell, though (easier to fake, too).  Was already posted above (:

[Dan Case]

On carburetors, if they have ever been through a commercial rebuilder for any reason between simple freshen up to show preparation almost anything is possible.

One friend paid an insane amount of money for a very low volume high performance Ford 4100 model from a world famous shop.
1) His car's engine would not idle at low rpm with it installed.
2) Idle mixture tuning could never be done well even though the transition slots were not exposed.
3) Multiple mechanics in multiple shops tried to tune it without success.
4) For some reason somebody had been welding up something on the mounting face and crudely tried to true the surface.

I rarely work on anybody else's carburetors anymore but he begged.  What  I found:
4) Both threaded ports for idle mixture screws had been welded up, redrilled, and rethreaded. The threaded holes were so large the needles could be wiggled.  The threaded joints leaked, no surprise. Might have been where the extra air at idle was coming from.
5) One idle mixture screw didn't seem to align with the passage the needle tip belonged in deeper in the body.
6) The flange area where the original assembly identification was stamped had been welded over.
7) The freshly welded flange was machined with a end mill and left lower flatter than the original casting shape.
8 ) The number of the model my friend wanted was stamped there and then lightly media blasted to age it a little.
9) The primary and secondary venturi clusters were from standard (not enriched performance air fuel mixture) model.
10) The main jets were for the same standard model.
11) Neither dry float setting was anywhere close to what they would have been for the performance model.
12) Every screw and or washer in the assembly was something brand new that only resembled anything original at a distance.
13) The choke settings were no where close for the model my friend was hunting.

What my friend had purchased was very expensive assembly of scrap metal with a rare assembly number added for his benefit. Yep, world famous shop can be worse than nothing.

[C6ZZKGT]

Looking for a Autolite carb to suit a 1966 K code 4 speed must be correct carb for the K codes with manual choke . Thanks

I am currently restoring and road testing a proper C6ZF-C carburetor for Sam, who is the poster here this thread.

-Fred-