Since Middy posted that intake design topic, my brain has been workin'.


Here's an idea, based on the Yamaha/Ford SHO intake:

There will be one long pipe, or perhaps a 'bathtub' design. This will be the plenum. It will run the length between the #1 and #6 intake ports, and the carb/TB will mount onto that. For the long runners, there will be six tubes coming out of the plenum, angling away from the engine. (Visually, they'd come out about...35 degrees, perhaps, from the vertical centerline of the plenum tube) They will then curve around and go to the head. The short runners will come out on the 'head' side of the plenum, and go straight to the ports. The secondary runners will operate on a mechanical butterfly setup at first, for simplicity (to work out the kinks). The height of the plenum will be something to consider, as the secondary runners should be at enough of an angle to provide a straight shot at the back of the valve head, but still have hood clearance. I'm thinking to make the most of it, you'd need MPI or a side draught carb for clearance, to reduce the height.


This is still a rough idea, so I could use some feedback.

Look what ya did, Middy, you got me thinkin'.

Neat idea, you'll have to draw it up....

I just posted this pic elsewhere, but this shows you how much space you have to work with in a late A-body (boy the truck and C-body guys have it good!!!!).


Intake comparo:





-D.Idiot

I think what I'm gonna do to save time and money is fab up the plenum and the mounting flange for the head with about 1-2" of the runner pipes welded on, and attach the runners with a piece of hose and hose clamp. That way I can play around with the runner lengths/angles without having to tool up a new plenum and flange every time. Infinite options, indeed!



Is that an early A or late A engine bay?

I can "name that engine bay..." Late A-Body

As for the adjustable runner / hose clamp idea, that is what the factory did to "dial-in" the H-Pak, it works!
DD
http://www.slantsix.org/articles/hyper- ... inkage.jpg

Yep, that way, I figger I can fab up several different lengths/bends for both sets of runners.

Sounds like an interesting setup, would have to be drafted up tho...

Lou, you think ya got it bad i'm in the same boat as you now, and trust me, my Aspen dont have any room, compaired to my truck its like trying to shove a hemi into a K-car!

Justin