Correct Manifold for Comp Cars with Hi Rise Heads?

[Michael4yah]

Can anyone tell me what the correct intake manifold would be for the Comp cars with the Hi Riser Heads? Also If anyone has photos of original Comp Cars with Hi Rise Webers? Heck while Im at it , anyone out there have a Weber Manifold for Hi riser eng. or some original 58s they want to sell?
At this point I might even settle for some good photos!!
Thanks, Michael

[Excaliber]

The comps cars ran a single 'center pivot float' style carb, mainly because that style carb could handle the cornering forces without flooding out from fuel slosh.

As to which ones, if any, actually ran high riser heads I don't know if they did, as delivered from Shelby anyway. No doubt some independants did. High Riser heads were discontinued in 1964 after NASCAR banned them from racing. Medium riser heads were there replacement. High riser heads have large tall ports and require special intake gaskets and a MATCHING intake manifold, medium riser intake will not work.

[Michael4yah]

Ernie, Hows it. Yeah I knew about the differences. A couple weeks ago I saw a short film on a guy that had two originals. One was a std SC while the other was called just a C model or Competiton model that he licensed for the street. In that short film he takes you through both cars and said that this C model was one of only about 12 or so that were configuired that way with Hi Riser heads but still maintained a single 4bbl carb. I was hoping that someone out there knew about these cars etc. especially the single 4bbl hi rise manifold. I had heard that some of these 12 cars were delivered with hi rise heads and 48 and 58 mm webers. I guess we'll have to wait to see if anyone really on top of this one chimes in.
Michael

[Excaliber]

It is an interesting question: Were some of the cars DELIVERED with High Riser heads? To expound on that, delivered by WHO? An authorized Shelby/Ford dealer who installed the heads at their facility? Or were some modified with High Riser heads and shipped out of Shelbys facility directly?

I run date coded OEM 1964 high riser and matching 2X4 intake on my side oiler and have wondered about this for some time. Clear answers have been illusive...

Not to mention the alloy heads available to a select chosen few back in the day! I would like to know more about them as well.

[Michael4yah]

Ernie, I'll try to get the url for that short film so you can see it. This owner is pretty knowlegable . I think if I remember right he claims that on those 12 or so COMP cars they came with hirisers and most were sgl 4bbl and 3 or 4 came with webers. Its been a while and Ive heard many stories on this subject. Too bad CS doesnt just tell what went on in that place!
Michael

[Anthony]

I believe this to be the correct single four intake for high riser heads, although it has been modified, as it originally came with 4 holes for the carb, not the two as it was modified to. C4 number, i.e. 1964 design.





another shot.




I believe this to be the correct carb, Holley list 3255-1 , 780 cfm, for ford 427 Hi-Riser race engine. The carb came as a vacuum secondary, although I know some were modified to be mechanical secondaries as raced by shelby. I don't know if they modified all carbs, some carbs, or only on a select few. They come up for sale on ebay every month or so.




Here's a shot of engine with 427 Hi-Riser heads, single four intake, and Hi-Riser carb as installed.

[richsd]

Originally Posted by Anthony

I believe this to be the correct carb, Holley list 3255-1 , 780 cfm, for ford 427 Hi-Riser race engine. The carb came as a vacuum secondary, although I know some were modified to be mechanical secondaries as raced by shelby. I don't know if they modified all carbs, some carbs, or only on a select few. They come up for sale on ebay every month or so.

Although many people think that the 780 cfm carb was used on comp cars this was actually not the case very ofter, 780s were used by some but more often a larger carb such as a 850 cfm was used on original comp cars.

[Byots]

nm .

[computerworks]

Originally Posted by richsd

Although many people think that the 780 cfm carb was used on comp cars this was actually not the case very often, 780s were used by some but more often a larger carb such as a 850 cfm was used on original comp cars.

..can you share the data that backs that up? "More often" means more than 10 cars.

Very curious about that....

[richsd]

Originally Posted by computerworks

..can you share the data that backs that up? "More often" means more than 10 cars.

Very curious about that....

Well I am not a data collector so I don't know what to provide to back this up. 850 cfm carbs were the carb of choice for comp cars. This comes from people I know that worked on comp cars back in the day. The guy that does the work on my car and his father are examples. Their shop is full of a ton of Cobra racing history but it is not in the form of data that I can quote and post here. It is in the form of many parts from original comp cars, many stories, and many pictures. With each visit I make, I learn more about the reality of what was done on these cars in the 60s and during the racing days. If you would like to further your knowledge I would highly recommend a visit to them some day. You would see some pretty cool stuff, learn some new things, and likely hear some things that are not consistent with the typical views that have been posted more widely. Many of the guys that worked with the Cobras in the day have no interest at all in a forum such as this so the only way to learn from them is to talk to them in person.

[Rick Parker]

I like the toally uncluttered appearance of the 427 Comp engine compartment....all businesslike. Great picture.

[Michael4yah]

Byots, thanks for the photos. Have you ever seen a Comp car photo with 58 Webers on a Hi rise manifold where the webers were in the same alignment as the med rise 48s manifold. I have a photo of a red car with 58s mounted sideways in the center of the manifold but I cant get it from "My Pictures" to here. I'll load it onto my Gallery.
Michael



(put the image in the post for you...CW)

[Byots]

nm .

[Michael4yah]

Wow. Those 58s are something else. They really dwarf the 48s in size. Any clues as to whether or not they worked ok on the street ? What would a set of these cost

Michael

[Cobra #3170]

My understanding was that the 427 comp cars were homologated with the single 4 barrel intake and that was the only configuration raced. The Essex Wire car ran in both AP and then the Canam race at Luguna and Riverside and to the best of my knowledge did not use Webbers. Does anyone know of a case where a Webber carbed 427 Cobra ran in sanctioned competition?

[Michael4yah]

CW can you post the 4bbl manifold in my gallery. Im a technologically handicapped!!!

[computerworks]

It's not so tough...

When you view the pic in your Gallery...just below it is a string called UBBCode.

Just highlight the whole string, point to it and right-click-COPY.

Then, start your new post and, at the point you want your picture to appear... just right-click-PASTE

[Byots]

nm .

[Cobra #3170]

Do you know what specific races Essex Wire ran Webbers and in what class did it compete? The point here is that if the car ran an unlimited class it could run Webbers if it ran A production it could not, under SCCA rules. Mr. Ford still had an Italian made wife at the time I wonder how she felt about the no Italian parts edict.
I know that they explored both Webbers and mechanical injection on the CanAm
effort but have still not heard of a specific race location and date where a Webber 427 Cobra ran. The reason for my curiosity is that I asked Shelby American that very question in 1966 and was told that it wasn't necessary because the 427 had adequate power with the single four.

[FFR428]

[quote=Byots]Here is a picture of a high riser equipped engine in CSX3002 at Silverstone in late '64: http://www.clubcobra.com/photopost/s...0&ppuser=18204

Not to get to OT but...
What about that weber tunnelport intake in the next picture? I don't think I've ever seen a pic of that before! Do you know the history on those? That is just to cool.

G.