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It depends on if the engine is stock or modified.

Almost any Holley will work. Modified like BC-BD which you can get reproductions of.

Even a pair of 1850's will work but they will need the Ford throttles like the original 1850 and 1850-1, for the linkages.

Drew has found issues with brand new reproduced BC-BD's. You'd have to ask him exactly where and what to look for and correct.

Generally speaking you will need more camshaft and headers with a less restrictive exhaust system will help. Better connecting rods is a VERY good idea as well.

Some think that the original carbs were selected to reduce the rpm potential of the engine and thus load the bad connecting rods less.

Many thanks Doug.
The engine is stock, and I have all the linkage for the two original carburetors.
Will two of these do the job?

https://www.holley.com/products/fuel_systems/carburetors/street/parts/0-1850S

Apart from the carburetors - the restoration job is amazing.

In case I want to buy new Holley carburetors, can anybody guide me which numbers to buy (think they are different)?

I will then send the original ones to AFS, and there will be no rush to finish them.

Again many thanks

Best regards
Jakob

My carb business is booked for about a year...
But if you want to tackle those yourself I'd be happy to coach you through it all.

The care for these is fairly specific, but not much different than any other holley.
I also have some blog posts specifically detailing multicarb ford setups on my page afscarbs.com
Feel free to check them out and also feel free to ask me anything.
I've done a few of these setups 😉

Haha, I just sent you a mail, as everybody send me your way - and then I saw this :-) Really appreciated

Just out of interest I read through Jakob's other posts.

This is what this community is all about, those with knowledge helping others out !

Mike

hi Honker - yes 100% agree with you, I have got very good guidance, which is much appreciated

Another problem may be causing some of your issues. There appears to be the tell tale signs of discoloration in the inside of the air horns, indicating a presence of backfire, which may have taken out the power valves.

Yes fully agree, something did not go well - thanks for input

I also wonder what fuel pump are you using? 
What is the pressure being delivered to those fuel lines?  (check the output side of the fuel pump for the pressure).   
I'm wondering about stuck needle and seats in the carbs? (I had one stick close as the car sat in a my hot Texas shop all summer, dried out and the stock system did opposite of yours, it couldn't open the seat and fill the fuel bowl.  There was also an issue with the float.....).

Good point thanks, I will get it checked

Hi all

GT500 #1739 almost ready to hit the road after restoration.

The car is drowning in gasoline, and my mechanic has tried several options without any luck.
I have cold started it a few times, but dont dare to drive it until the problem is solved.
The carburetors were cleaned and got new gaskets installed.

I consider to replace the carburetors with more modern ones.
Can anybody guide me what is the best option, which still will fit under the original air filter?

Many thanks

Best regards
Jakob

Those are wonderful carburetors if restored / rebuilt properly. Your photo shows a multitude of problems in the engine compartment. I would start by sending those carburetors to someone who specializes in them for a complete rework / restoration. Then take Bob up on his offer.

Many thanks - appreciate the input - yes a messy set-up

I have never seen 4 fuel lines going into the BJ BK carbs before. Modifying the bowls is one indication the carbs have been heavily messed with in the past so who knows what other things have been done inside that may be responsible for the issues. I will let someone else go through the multitude of possible thing or things that could be the cause of your symptoms. Back in the day when they had to be every day transportation we switched out the duel fours for a single carb. Of course today I would advise against the switch unless you plan on doing a lot of pleasure driving and you are not concerned about historical appearance. I would have someone who is used to rebuilding the BJ and BK carbs to go through them so you can get them running right. They will always use a lot of gas . The engine is over carburetor ated for typical street driving to begin with. Spirited driving not so much.  There are some on this forum who specialize in rebuilding BJ BK carbs. You went to the trouble of getting a historical repro coil for the engine but it is installed backwards.There are other small things that have been done that would need to be changed if you are concerned about historical look. PM me and I would be glad to help.

Greatly appreciated bob, I will get back to you

Hi all

GT500 #1739 almost ready to hit the road after restoration.

The car is drowning in gasoline, and my mechanic has tried several options without any luck.
I have cold started it a few times, but dont dare to drive it until the problem is solved.
The carburetors were cleaned and got new gaskets installed.

I consider to replace the carburetors with more modern ones.
Can anybody guide me what is the best option, which still will fit under the original air filter?

Many thanks

Best regards
Jakob

Many thanks for your replies - very useful.
I have only replaced the valve seats which were "burned"

Good day Shelby'ers

GT500 #1739 sending greetings from Greece

I had an issue with a few valve seats, and got them repaired.
On one cylinder it was both valves which had issues.
The repair shop said I could face issues, as one valve is hot and the other cold, and it could create tension.
What is your point of view?

I may look for a spare head, just in case I have issues.
one head is made Dec 12/66 - the other Dec 13/66 and the block Dec 14/66

Many thanks in advance for your assistance

Best regards
Jakob

Hi all Shelby'ers

#1739 soon ready to hit the road.
All working well, except the Amperometer.

Does anybody have a wiring diagram at hand?

Many thanks
Best regards/Jakob

thanks Bob - appreciated

I found an excellent original set - all good.

I wish you a nice weekend

Best regards
Jakob

Happy new year

I am restoring a 1967 GT500 # 1739.
I am looking for original valve covers, or possible reproduction as close as possible to the original.

Anybody have a set for sale?

Best regards
Jakob