SOHC Intake Manifolds

[Autoholic]

I realized last night that I am sitting on a bunch of research on the SOHC, including intake manifolds. Some of these have been found on eBay over the past 5+ years and as such, are no longer visible. I can't remember finding anywhere online where someone could find out information specifically about the SOHC intake manifolds. If the intake was a Ford part, I tried to get the part number whenever possible. Some of these intakes though are very, very rare. More pictures can be found in the link below.

https://plus.google.com/photos/108907720764484306437/albums/6146185049650914321

Single Carb Intakes

The first one is a single carb, dual plane with p/n C6AE-9424-J, which is identical to C6AE-9425-J as far as I can tell.




Below is C6AE-9425-J




The last single carb intake I know of is C6AE-9425-I. I have only confirmed the existence of this intake on 1 cammer, found in a Starline. I got the p/n from an eBay listing, I believe I spoke to the seller about it.




Dual Carb Intakes

I only know of one factory dual carb intake, C6AE-9425-L. Robert Pond makes a repro of this.

[Autoholic]

Factory Prototypes / Experiementals and Unknown Origins

I do not have a part number for the first intake but I do remember speaking to the seller about it. I thought it was a Dove intake but the seller confirmed that it was from the 60's and it had no markings on it. ANY additional info on this intake would be appreciated. This could be where Dove got their intake design.





Dual Autolite Inline 4 crossram intake, p/n XE-93248 and found in the Suncammer.




SOHC Webber Intake, I do not know much about this intake and have never seen any other pictures of it other than a promo shot for the Super Cyclone.






I do not know if this was a factory experimental or a Holman Moody part, but here is the only picture I have of a high riser tunnel port. It was Hubert Platt's Mustang and so chances are this was an experimental. http://www.mustangandfords.com/featured-vehicles/mump-1302-1969-ford-mustang-georgia-shaker-is-back/

[Autoholic]

Aftermarket Intakes

The first aftermarket is of course Dove's single plane tunnel port, which is modular. The second pic has a blower adapter.



The next one is Munro's single plane, dual carb intake. This is my favorite.




The next one I have pictures of is Munro's blower manifold.

[Autoholic]

Hilborn makes both an EFI and old school fuel injection manifold.

[cobracammer]

SOHC Webber intake was from Orlando Florida  (the guys name was Wayne Jeffers I believe).  I believe he has since passed away, and that picture you have above looks like one of a whole bunch I saved when it sold on ebay a few years ago for over $10,000.00.  I was talking with a foundry as well as a few AutoCAD people and a 3D scanner to start getting these made in the aftermarket world....  But moving jobs and moving states took up my time.  :0(

When this one sold on ebay, I liked it so much, that I saved every picture they had on the ad so that the AutoCAD people could use my Robert Pond intake and those pictures to come up with a "Wire" drawing that I could send to the mold maker  LOL

Even if there wasn't good performance from this piece (and Im not saying there wasn't because I don't know......) it still looks 10 X cooler to have IDA carbs all lined up like that!

[Autoholic]

Yep, I saved the pics too. I have a 3D CAD file that details the SOHC. The accuracy I do not know about, I've never tried to take measurements on it and have them checked by someone with real parts. Building a 3D version of that webber intake wouldn't take too much work, my only problem right now is that I do not have a high end CAD program to model it in. Nor do I have the computer to truly knock out this design, the tech stuff will take a year or two. If the CAD file I have for the SOHC is accurate, I could design pretty much to my heart's content. I have some ideas that I have worked on...

[BH107]

SOHC Webber intake was from the Orlando Florida  (the guys name was Wayne Jeffers I believe).  I believe he has since passed away, and that picture you have above look like one of a whole bunch I saved when it sold on ebay a few years ago for over $10,000.00.  I was talking with a foundry as well as a few AutoCAD people and a 3D scanner to start getting these made in the aftermarket world....  But moving jobs and moving states took up my time.  :0(

When this one sold on ebay, I liked it so much, that I saved every picture they had on the ad so that the AutoCAD people could use my Robert Pond intake and those pictures to come up with a "Wire" drawing that I could send to the mold maker  LOL

Even if there wasn't good performance from this piece (and Im not saying there wasn't because I don't know......) it still looks 10 X cooler to have IDA carbs all lined up like that!

Wouldn't have done you much good to "copy" it as it will only fit original 58mm Webers which have a different bolt pattern than the 48mm IDA.

[BH107]

There are a few other XE intakes, and several differnt original blower manifolds.

The intake on the Suncammer is not OEM.

[Autoholic]

There are a few other XE intakes, and several differnt original blower manifolds.

The intake on the Suncammer is not OEM.

Do you have any additional information to go a long with this? How do you know the XE-93248 intake was not made by Ford? Do you have examples of the other experimental intakes?

[Autoholic]

Wouldn't have done you much good to "copy" it as it will only fit original 58mm Webers which have a different bolt pattern than the 48mm IDA.

Actually, with a small modification to the design to fit a 48 mm IDA, the intake will work even better. From my CAD file, the intake ports are 54 mm. I'm not sure if this is accurate but if it is, then you would be going from a 48 mm port to a 54 mm port, giving you the ability to slightly slow down the air fuel mixture. Whenever you slow down a gas, the pressure of the gas will increase. You could design the intake to have a small expansion right before the exit of the intake. This would cause a small increase in pressure on top of the port on the heads. If my 54 mm is correct, you would be going from 48 mm to 54 mm, which is a 21% increase in cross sectional area of that pipe. That's a pretty big difference that will have to be equalized by slowing down the air fuel mixture and increasing its pressure. If designed properly, that could be a decent increase in the efficiency of the engine.

While SketchUp certainly has it's limitations, it can be useful in creating a design still. I know there are plug ins that allow you to save in formats that can be used in Pro/E and SolidWorks. They cost though and without the program to export to, I haven't had a need for them yet. Here is a teaser. I'm currently working on the tunnel pathway for the intake. With Solid Works, it would be easy to do this. Without an awesome program like that, I have to do it all by hand.

[rockittsled]

There are a few other XE intakes, and several differnt original blower manifolds.

The intake on the Suncammer is not OEM.

Do you have any additional information to go a long with this? How do you know the XE-93248 intake was not made by Ford? Do you have examples of the other experimental intakes?

Several articles on the Sunliner state that it is a custom manifold. I could not find the specific article that I remember which gave the reason that Cook chose to build the intake.  The fact that it won the Ridler meant there was a lot of coverage of the car and a lot to search. 

[Autoholic]

Alright. Seems silly to give an intake an XE number if it wasn't a Ford part. Beautiful intake though and the dual inline 4's aren't exactly cheap anymore. Do you have any additional info on experimental intakes? I'm sure there are more than what is in this thread, or at least more pictures of some of the rare intakes.

[ScotiaFE]

Me thinks you're trying to temp Jay into another intake shoot out.

[machoneman]

Cool thread. Had no idea quite so many cammer intakes were made back then, let alone some of the newer iterations. It's a bit amazing considering Ford only made 500-550 SOHC engines as most modern historians claim.

[jayb]

You'd never want to use 48 IDA Webers on an SOHC.  They are way, way too small to make decent power.  During my intake testing on standard FEs the 48 IDA Webers started giving up around 550 HP, and were way down on power compared to some of the Holley carb combinations at 650HP.  Given that a stock 4V SOHC is 616 HP, the Webers would be a step down.  And the 4V SOHCs were carb limited too, since just the change to a 2X4V setup netted an additional 40 HP. 

The Hilborn manifold, on the other hand, seems to work great; mine is converted to EFI and is very street friendly, although touchy about the butterfly adjustments.  I made 960 HP with that manifold on my big SOHC.  If you are interested in an individual runner setup, the Hilborn is the way to go.