what carbs should i use for a 3x1 intake.

[Patrick66]

sorry if this topic has already been posted and i just havent been able to find it.

what carbs should i use for a 3x1 setup and what jets should i use, i have read on here that i should use a larger jet on the middle one, seems im gonna be using progressive linkage, and i should use smaller jets on the others.
And do i need a fuel block, do i need a new pump, where do i get progressive linkage and all that?
thanks

 

[mustang652]

Various Holleys including the 1904s, the various Autolite 1100s, which I tried to use and never got to work properly and the Weber 34 ICH or ITH(one has a choke and the other does not)

The Webers were not availible do to a factory strike when I started the project but if I were to try it again I would go with the Webers. New carburetors, less trouble.

 

[JOHN G]

The webers are very tunable and relatively cheap. I didn't use a fuel block-just a fuel line to the carbs that is split to each. You'll want a regulator in line as well cause the webers can't handle any more that 3 lbs of pressure max. Stock pump seems to work just fine for me.

 

[mluck]

webers..34ich

 

[HighVolkage]

webers..34ich

thats what i'm running, 3 34 ic series, one with choke, 2 without. very tunable and very easy to work with. you will have to up the jets from stock but thats no biggie.

 

[Junk-Falcon]

im running

 

[mugsy]

Clifford used to sell 34 ICH for the offenhauser (sp) triple barrel adapter. Weber also makes a 34 ICT, that is very similar to the ICH, but it does not have a choke. I have a set -up ready to put on my car. I went with a regular OEM carb (bought it at an AutoZoo-type place); but I told the parts guy it was for a '69 Mustang with 200. This carb has ported vacuum and not the LOM/spark control valve. The end carbs are 34ICTs. I did put this on my car right after I rebuilt the engine, but had problems with the linkage (end carb wouldn't open up) so I made block off plates for the end holes and went back to an OEM carb in the middle so I could drive it.

 

[Patrick66]

cool, i got a lot of info now.
im gonna go with the webers, should i use 3 with choke or should i use one with choke and the others without a choke.
thanks

 

[HighVolkage]

cool, i got a lot of info now.
im gonna go with the webers, should i use 3 with choke or should i use one with choke and the others without a choke.
thanks

one with choke is sufficient.

 

[Anonymous]

The outboards should be 34 ICT and the center 34 ICH ( this one has the choke )

 

[jahearne]

The Holley 1904s can be a pain in the a$$; sometimes they leak, flood and hard to find, but they look cool.

they're also the shortest carbs I could find. Since I'm running a 250 cu in motor that's nearly 2" taller, hood clearance is a problem. If I can't get these to run in a reliable daily driver then I'll switch to Webers like the other members suggested.

 

[mugsy]

The reason I went with ICT on the ends is that they are eaisier to find. Or at least at that time (2004) I could find ICT any time I checked e-bay. The ICH were tougher to find/come across. If you can find 3 ICHs, go for it. But you'll need to remove or disable the chokes from the end carbs.

tanx.
Mugsy

 

[shmoozo]

The Holley 1904s can be a pain in the a$$; sometimes they leak, flood and hard to find, but they look cool.

That's a heck of a nice looking setup there. Nice work. If it runs anywhere near as good as it looks it'll be fine.

 

[Patrick66]

that is nice. hope mine looks that good.
found a ich and an ict on ebay, just need another ict.

 

[Stubby]

At 107.oo each, they aren't bad. Check out these guys.

http://www.cbperformance.com/catalog.asp?ProductID=502

 

[ludwig]

Woah, Jahearne. That throttle linkage is a really slick solution to a knotty problem; simple and direct. Did you refashion the stock bar by cutting and bending or is it something else?

 

[CobraSix]

I ran 1100s on my old Offy set up. I found with the 65 body style, hood clearance was a serious issue and the 1100 is the shortest of the easily available carbs. Plus they are relatively straight forward. I just removed the choke assemblies from the forward and rear carbs.

 

[jahearne]

The Holley 1904s can be a pain in the a$$; sometimes they leak, flood and hard to find, but they look cool.

That's a heck of a nice looking setup there. Nice work. If it runs anywhere near as good as it looks it'll be fine.

That's what I'm hoping! got my fingers crossed.

 

[jahearne]

Woah, Jahearne. That throttle linkage is a really slick solution to a knotty problem; simple and direct. Did you refashion the stock bar by cutting and bending or is it something else?

I took a length of threaded stock that I got from the hardware store and bent it to shape. I'll get some better photos of it.

 

[jacks66mustang]

I went with the Webers after trying a Carter RBS for center carb. Also tried running 3 holley 1904's. Weber ICh running in center seems really good and fixed my rough idle problems.