It has always bothered me that I have a steel, (built by Joey Cole) hood scoop that is not supplying air to the carbs.
I have two 750 cfm Hollys on a Marine intake. I studied the factory systems, and found that the only one with a seal on the air cleaner was an A12.
So I ordered the closest thing I could find which was a Shaker with Edelbrock carbs and a StageV intake. Of course the rear Holly carb bowl took up all the space, so I had to modify it. My goal is to build a "wa ll" like the A12,and seal the carbs to the scoop.

Metal work is a lost art, stretching, hammering and fitting, takes a LOT of time!

Now I have to fabricate a "wall" with a 1" lip to hold the rubber seal. Then,,,,,cut the metal in the triangle between the metal bracing to let the air in.

Of course I will cut the flat metal to fit the "wall". I chose a Shaker FOR the flat leaving the air cleaner

I need to do something like that for my Hemi, I was going to use the metal aircleaner base to make a fiberglass one then use it to modify for my Holley carbs. Another project on the list of TODO's

Is this for the standard height WO scoop ?

Please explain - "the only factory system with a seal to the air cleaner".

Not getting it either . Didnt the race/scoop setups use a cross ram with velocity stacks sealed to underside of bonnet cut oyt holes ?

Tex

Lynn, when you get done, have it scanned, then 3d print them for other people.

Finally everything fits, I had to trim the air cleaner element in the back where I made a plate to push out for the Holly float bowl, but it seals just fine. Now on the building the wall with the seal AKA A12. The A12 has a slope to the front, I will need to repecate that.

The factory WO/RO 23 system used an aluminum plate the required cutting essentially all of the hood bracing out, indeed, it didn't have any provision for an air cleaner, race only, no good for a street car.

Joey built my scoop to be 3" high. Chrysler tests show that it needs to be at least 2-1/2" high to clear the "boundry layer"

The only fresh air system available before 1969 was the RO/WO23 Super stock available on 55 each Belvedere and Coronet. The system was race only, cutting out most of the hood bracing and no air cleaner.

My goal is to have COOL air coming into the carbs. Right now I have a "bottom breather" Chrome Dome, this pulls air from the bottom, engine temp. For every 10 degrees of temp drop, you gain 1% of HP. So, with underhood/engine temps at 200 degrees, if I pull 85 degree temp air into the carbs, I will gain 65+ HP (engine dynode at 635 HP).

I like the finished product. Pretty neat.

I have one more day off and am spending it wisely. Here I am building a mock up of the "A12 wall". This will be recreated in 18 gauge steel and welded in place. The rubber seal goes on the top lip. I need to give credit to Tommy theChryco. He had the best deal on the parts and made sure I had them before my Christmas break.

I should have posted a photo before of what I am trying to end up with, A12 air cleaner, but for two Holly 750s

I would like to see the modifications to fit the carbs with the base. I have to do something similar with my Hemi with the stageV intake and Holleys. Tim

Tim Look at the first post at the top of the page. The second shot clearly shows his mod to the carb plate to get it to work with the Holleys.

I assume you are making the "wall" out of some sort of high density foam to seal to the hood and allow some flex for engine movement and still stay sealed up.