Lloyd I take your work on this. I've not had a sidewinder for years to compare and look at. Given the fact you have one right there your the best source of information.

 

I do have that number listed as a sidewinder. Is the carb pad offset?

 

It didn't look to be offset, but I didn't know to look for that.

 

I could be wrong on that number too going from memory. I know it's either a PI or SW. I'll dig around and see which it is.

 

Yep I was wrong sorry. The C6AE-9425-H casting is an aluminum PI intake part number C6AZ-9424-H

 

A C6AZ-9424-H is a PI, but I do not have information about a C6AE-9424-H

Looks like I posted a few seconds after you did Glen...

 

9425 is the manifold itself.

9424 is the manifold assy.

By adding the WP bypass tube and threaded core plugs changed manifold to an manifold assembly. This for the intake part numbers.

Now I've seen both 9424 and 9425 in intake casting numbers as well. I'm not sure if one was a service/over the counter part vs a production part?

 

Score! Hopefully I'll have it by early this week. Thanks man.

 

BTW, what is the name of the website that shows several pictures of each intake manifold for the FE? Its an informational website more than anything, and I can't seem to bring it up on any of my net searches.

 

Here;


Bob's Ford Projects

 

FYI, The manifold in question (C6AE-H) is shown in the top row, far right.

The Sidewinder (C6AE-J) is shown next to the bottom row, far right. It is real obvious that the carb pad is offset to the left.

 

Yep, the PI in that pic is the same as the one I'm gettin'. Thanks Bear.

 

Dust, let us know how big the port openings are when you recieve your C6AE-H manifold. When folks talk about a Police interceptor intake, they generally mean the C7AE-F casting. The C7 intake was made for the raised floor velocity ports. The MR427 intake, cast as C5AE-F, also had the raised floor ports. I haven't seen a C6AE-H port recently enough to remember which port they have. If they have the larger opening, they'll match your C6AE-R cylinder heads just fine. If they should happen to have the smaller openings, thats fine too. A velocity port manifold feeding into a largeport head is just fine. Thats exactly what Ford did with the 428CJ engine. Resist any notions you or anyone else might have about grind out the openings to lower the floors- plenty of nice manifolds and heads have been ruined by this- instead, if you don't have a match, consider filling the floors with epoxy. Yes the large port heads can flow more, but that is because of throat width and bowl size, not the 'taller to the bottom' port opening.
Keisha, have you made a choice about your truck ? Your D2TE-AA heads will definately have the smaller ports. But if you find a manifold with the large ports, it could be filled in, just like Dust might need to do with his heads. DinosaurFan

 

Dino, I got the manifold and took some measurements. The port height averages about 1.945" and the width is about 1.21". Is this what would be considered the large port or the velocity port? By what I've read here the C6AE-R heads have an intake height of 2.2". You're saying it would be bad to open the port size of the manifold to match the head, and would be better instead to fill the head ports to match? If you did open the manifold, in what way does it "ruin" it? Is it because you wouldn't be really gaining much more flow, because as you said the flow is more in the throat and bowls? What would be the benefit of going thru the work to epoxy the larger head ports to match the intake? Would there be any noticable power gains from doing this in a street engine?
Sorry so many Q's, just wanting to get a thorough understanding.

 

Dust, your manifold has the smaller ports. They would match later heads very well. Opening up the manifold to match the heads would require lowering the floors. Lowering the port floors will give you more volume, but the bottom of the port will be a dead zone for flow. If you look at Ford's 428CJ, the iron intakes they came with had the same small ports your intake has, and the C8OE-N head has the same large port your heads have. If there is enough material on the bottom of the manifold's port openings to seal well you'll be fine. If you wanted to port match, you could fill in the bottoms of your cylinderhead ports. You'll pick up some velocity ( better cylinder filling ), and your C6 heads still have the nice bowls and higher exit exhaust. If anyone suggests grinding down the floors of the intake, get an axe and go after them ! DinosaurFan