[mackattack2012]

I have a 1966 mustang that I purchased 36 years ago. It has sat idle for the last 15 years. I replaced the stock intake with a ford 4barrel intake 20 years ago and put a holley 600 double pumper on it and it always bogged on heavy foot take off. I want to replace the carb an looking for recommendations for 4 barrels carbs with this intake. The rest of the engine is totally stock. Any help would be greatly appreciated.

 

[heavy metal]

Welcome to the site!! I moved your thread for better response.

 

[Print Dad]

Hello mackattack2012,
Welcome to the forum - you will get a lot of GREAT
info here. Glad to hear you are getting the car running again.
I did the same when our son was born - car sat for about 17 years.

Thye type and size of the carb can also depend on if the car is
an automatic or standard trani.
A double pumper is too much gas for a stock 289. You MAY get away with it
on a standard.

My advice is get a VACUUM secondary carb. I like Holley but zillions of others
will say Edelbrock. I think it is all in what you get used to.

Then main thing is to go with vacuum secondary - then you can adjust
the secondary "springs" to meet your motor needs

Print Dad

 

[koski19]

If you want to stay with Holley, which is a great carb you can go with a Holley 600 CFM 4bbl with vacuum secondaries.
I agree with Printdad, the double pump carb is way too much for a stock engine. Here's a link or two:
Holley Performance Products 600 CFM Four Barrel Street Carburetor*0-80450
Holley Performance Products 600 CFM Four Barrel Street Carburetor*0-80453
Holley Interactive Carburetor Selector
Carburetor Installation & Tuning Segments | Holley TV

Jeff

 

[rex1965]

Follow Print Dad's advice and get a vacuum secondary carb, and for a stock engine don't go bigger than 500 cfm, if you are planning on performance upgrades in the future, then you could go up to 600 cfm. If you have an automatic transmission, then you need the manual kickdown linkage for the trans on the carb (holley makes an adapter kit for it on their carbs). If you are wanting an autolite 4100 carb like the originals, look at the numbers in the circle with the X on the side, a 1.08 is about a 470 cfm and a 1.12 is about a 600 cfm, although current air flow tests by independent shops have shown them to be about 40-60 cfm less than advertised, but they are still the carb requiring the least amount of maintenance. My carb on my 65 FB 289/271hp top loader 4sp is a 4100 autolite 1.12, and I've had it for about 40 years, and it has out performed all the other carbs I have tried, bigger and smaller cfm. Good Luck.

 

[koski19]

I did a quick check and Holley recommends the following two carbs for a stock 289:

0-8007 390 CFM Four Barrel Street Carburetor 390 CFM Four Barrel Street Carburetor
Electric Choke; Vacuum Secondary; Street Performance Carburetor Developed for the Budget Minded Enthusiasts

0-80570 570 CFM Four Barrel Carburetor 570 CFM Four Barrel Carburetor
Electric Choke; Vacuum Secondary Street Ready out of the box; Two adjustments and go

Jeff

 

[Fstbkpieces]

I think the original Ford Autolie 4100 carb is an excellent option. They can still be found.

 

[sp66stang]

rex hit it right on the head imo. all the advice you have gotten is real good now the important thing is what you plan to do with the car. that will determine what you get. follow what the others say and you will be happy with your choice.

 

[gearheadhick429]

cant beat the annular boosters on the ford carb. holley and quick fuel both make good products. recently quick fuels have come to the street level and are very adjustable. they also sell billet metering plates that are very adjustable as well. as 66 says, it all depends what you want to do. with the car. anything around 600 or below will suite you well.

best of luck

 

[imlowr2]

Sell me your 600 CFM double pumper!!!! The advice above is good and I'll elaborate on it a bit. The 4100 Autolite is the original carb for the 289 with a 4 bbl. Very reliable, easy to rebuilt and parts are still available. Great mileage. The Edelbrock is also dependable but I find a pain to adjust with the springs, needles, etc. Very complicated to dial in. The Holley is a great carb and one of my favorites. I'm currently running a 650CFM double pumper on my 289. I did have to put smaller jets in to get the carb to stop running rich. The carb works excellent and comes unglued with the pedal is stepped on. With the double pumper is comes on immediately. It does not rely on the engine's vacuum to open the secondaries. If your just cruising, and daily driver, I'd go with the Autolite or Edelbrock. My 289 is mostly stock with a aftermarket intake, headers, mild cam and basically stock heads and valve train. The early Shelby's ran the 650 DP on the hipo 289's and they ran strong. Like I said, I'd be interested in taking that 600 Holley off your hands.

 

[mackattack2012]

Thanks for the Holley links. In the tuning section it indicates that C4 and C6 transmissions must be equipped with a kickdown linkage. I do not have one, I am confused as I have a C4

 

[sp66stang]

someone may have taken it off of your c4. when I ran one I didn't use one just manually shifted into 2nd gear when I wanted to pass.

 

[Ivy66GT]

For '66 the C4 kickdown linkage was just a wire cable connected to an accelerator pedal arm opposite the one that works the carb linkage. This picture isn't all that good but the arm sticking up at the firewall goes to the carb. The one sticking down attaches the kickdown cable. You can see the end of that cable (hanging down out of the picture) attached to the bottom of that arm.

 

[koski19]

If you or anyone else is interested in a 4100 carb for the 289 here a link to a used one, not mine:

1965 66 C5ZF D Mustang Falcon Bronco 4100 Motorcraft Carburetor 1 43 Bore 289 | eBay


Jeff

 

[Ivy66GT]

IF that tag is the correct one, that 4100 was used on automatic transmission Fairlanes, Comet, Mustang and Falcon: the 'Z' is for Mustang. My book does not list Broncos. How its supposed to be 9-1-64 is a mystery to me since the tag date says 5th week of June 1965 (5FE). It would also be an Autolite; Motorcraft did not exist until 1972.

Its fleabay - buyer beware.

 

[ceptampa]

4100 carb

Good day. I agree the 4100 is a great carb, good performance and gas mileage. I have a couple extras, both 1.12. One in need of rebuilding and one newly rebuilt from Pony Carbs with vacuum advance, only one session dyno time on it. Also lots of other 65/66 parts.
Good luck
ceptampa@yahoo.com

 

[creaky]

Its fleabay - buyer beware.

Very true. When I was shopping for a correct 4100 (my'65 had a Holley on it with purchased) I saw quite a few on fleabay, and although they were advertised as fitting a '65 Mustang, only a couple were actually correct for my '65 A code. You need to know the correct carb number for your particular car in order to get the right one.

I bought a correct one from a forum member, feel lucky to have found it.

 

[DanielP]

I have had two edelbrocks on my 66 289 and I hate them. I have never been satisfied with the edelbrock carbs, just my two cents.

 

[Lizer]

nobody take things the wrong way, but more times than not, carbs take a lot of slack not because they're actually a bad carb, but because the person adjusting or tuning it doesn't really know how to do it.

 

[DanielP]

Well I openly admit ineptness at carb tuning, it's been a headache to get right and I'm still not there. I am actually considering going down to the Holley 390 from my edelbrock 500. What do y'all think?


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