Help Id dual quad set up

[ford88]

I p/u this ford dual quad set up and was wondering is anyone had any info on it,or has one I was told it was used on shelbys.no ford or shelby on it but ford part number as follows.  C6ZZ-6B068-A   CARBS  C0AE-9510-N  LIST 1848 Would like to know if carbs came with this set up  thanks

[CSX4781]

Can't tell much about the carbs, but the manifold is the 2nd generation 2-4 manifold that Shelby American sold over the counter in real late 1966-1967 (Shelby offered the same type of manifold after the Cobra name was sold to Ford). This is the same manifold used on the 67 Trans-Am cars (factory and customer). The 1st gen manifold is the one that has been reproduced for years now.

Dave

[GT350Shelb]

I would be interested if you would like to sell it
the above post is correct  I dont know if carbs are correct

[TA28]

carbs are more than likely off 352/390/ FE series motor.

[shelbydoug]

I get confused on the part numbers because the casting numbers are different. I can't tell which manifold it is without more detail and the carbs out of the way BUT I have no reason to doubt the information as correct.

It was my understanding that it is the first generation of the manifold which was raced, has the C6ZZ casting number and as a matter of fact the second generation is the one without the number but only has the Ford logo, BUT not to argue? I've got the "second" generation, high riser rather then the medium riser original Trans-Am. Either one of the two is very desirable and run like a bat outa' Hell.  Or is it that they told me to get the Hell out of here with that thing...I forget now? So long ago?

The carbs you have are the 58-60 Lincoln 450 carbs and what was originally recommended for the set up. Correct? I don't know? Does it matter?

I can tell you that a pair or 1850's, i.e., 600cfm carbs really run very well using the Ford 427 dual 4 linkage.

I wouldn't be shocked if the 715 427 carbs ran even better either, but I digress...as usual I suppose?

Either way, this set up is very impressive performer to say the least and makes me wonder why all Shelbys didn't come that way to begin with? Probably to much bit chin by the geeks in their Tom McCann loafers? Hey...you were supposed to wear socks with them things? To bad but it is what it is?

The Shelby catalog said an additional 50 horse over the single four barrel and I believe it...for sure dudes and dudettes!

[jk66gt350]

6S1575 has the 2x4 setup - the original owner purchased as a dealer option setup.  My manifold looks the same but the carbs are Holley 4160's - list 3360 and 3361.  And I second the comment about the extra 50 hp.  The engine runs very strong as compared to the stock setup - especially over 4,000 rpm.   

[rickmustang]

I have the same intake. No casting numbers. Only FoMoCo cast into the manifold. It came off a T/A Cougar raced in Mexico. A lot of the old American iron T/A cars went south after they were used up in the U.S. Rick

[Cobrafixer]

Look at the firing order on the intake, see if the last digit is a 9 instead of an 8.  I sold one of these that came off my car to a guy in Southern CA, nice intake!

[no1musclecar]

Here's another link to what he's referring to:
http://www.mustangtek.com/C6ZZ-6B068-A.html
Aloha!

[shelbydoug]

Here's another link to what he's referring to:
http://www.mustangtek.com/C6ZZ-6B068-A.html
Aloha!

That is the 67 Trans-Am manifold. It is a medium riser by comparison to the later. It has a different runner pattern also. I don't know which is better or which makes more horsepower but they both really run well.

If you have ever seen the Shelby script 2 x4 for the Boss 302, this is the manifold that it resembles. That is what I would run on a Boss 302. Not Webers.

I would switch my Pantera to 2 x4's in a nano second and dump the Webers if I could find one. Anyone have a 2x4 Holley manifold for a 351c to sell or trade me? 

I am running both right now on two different cars and the 2x4 Holley set up is by far the better performer on the street. The track is another thing altogether but I live on the street, not the track.

Thanks for posting the link. Those really are great pictures of the manifold.  

[gt350hr]

    ShelbyDoug,
        The T/A style intake pictured is far more powerful than the early version Ford released. I have run them all and currently have the T/A style on 6S477. When Shelby sold these set ups , some came with "1848's" (465 cfm) and later "1850's" (600 cfm).
   The Ford carbs were "3360 & 3361" (465cfm but specific calibration for 2x4 application). Both engines I built for the ex John McComb #33 Shelby built T/A coupe have these intakes with special "SK' numbered Holleys.
      Doug I too have searched for 40 years for the Factory 351C dual quad intake. I finally found 1 owned by a friend in Florida that is NOT for sale sadly. This is one of the few experimental Ford Engineering manifolds I have never owned. I have all kinds of factory information and can pin down the date it was drawn up and sent to be cast but can't get my hands on one. Factory aluminum Cleveland blocks and heads cast in late '68 , tri power 351C, XE Austrailian block, no problem in stock, but this damned intake is elluding me big time.
      Randy

[shelbydoug]

    ShelbyDoug,
        The T/A style intake pictured is far more powerful than the early version Ford released. I have run them all and currently have the T/A style on 6S477. When Shelby sold these set ups , some came with "1848's" (465 cfm) and later "1850's" (600 cfm).
   The Ford carbs were "3360 & 3361" (465cfm but specific calibration for 2x4 application). Both engines I built for the ex John McComb #33 Shelby built T/A coupe have these intakes with special "SK' numbered Holleys.
      Doug I too have searched for 40 years for the Factory 351C dual quad intake. I finally found 1 owned by a friend in Florida that is NOT for sale sadly. This is one of the few experimental Ford Engineering manifolds I have never owned. I have all kinds of factory information and can pin down the date it was drawn up and sent to be cast but can't get my hands on one. Factory aluminum Cleveland blocks and heads cast in late '68 , tri power 351C, XE Austrailian block, no problem in stock, but this damned intake is elluding me big time.
      Randy

The SK's are cool. I'm running 600 Holleys on mine. Yes the jetting is special for the SB 2x4s. I went with the Weatherly index specs on the original application. The primaries are 52's. Didn't see anything else unique such as air bleeds or idle transfer slots, but I could be wrong.

I'm glad that  I went with the 600s initially instead of the 450s. The 600s pull very hard and I love the sound of the secondaries wamping open and the darkened puff of exhaust suddenly.

The nose of the car comes up noticeably too. Of course the extra cubes of the 347 and the 368 gram pistons help allot as well.

I saw the 351c 3x2 holleys on Jeff Burgys Pantera way back. Maybe 1982 in Dearborn?

Jeff said he had 'heard" of the  351c 2x4 but had never seen one but was looking. There can't be many at all Randy. Maybe one?

I don't run the iron heads in my Pantera anymore. I have a set of A3 heads that came off of a circle track race car in it. The iron head manifolds need to be filled about 5/8" on the bottom of the port to fit the A3 heads. So even if I found one now it is too late for me on that account. Probably? 

[sportyworty]

the carbs are 465CFM common to see on a Tiger LAT set up. These are great little carbs on a slightly warmer 289 in single form as well.

[ford88]

Anyone have a value on this set-up ? Its has linkage and fuel log.This is the first one in a long time that was compleat...ED