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1967 Upper Scoop Cutout?

Started by MuPaSo, April 15, 2020, 06:46:16 PM

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shelbydoug

I think of it more as a cigarette smoke extractor.

I couldn't confirm that it actually works one way or the other. I will say that it is quiet and not noticeable BUT the engine makes so much racket to begin with, who would notice a little whistling.

When I'm on the track, the '68 Shelby hood, combined with the KR ducting and Weber carbs has a very noticeable whistling at speeds over 100. Everyone who heard it came over to see what was going on with the hood open.

Mostly it's the Webers but that nostril in the 68 Shelby hood when functional sings some kind of song as well.

I guess to a bystander it kind of sounds like one of those one man band set ups? BUT nothing from those extractors, AND the brake scoops although "mis-titled" do provide a source of cooler air into the rear wheel wells when the tire is rotating.



68 GT350 Lives Matter!

MuPaSo

Thanks again - for the lower scoop is the blackout treatment the same - outward facing opening edge taped off with everything behind that black (assuming I have that stated correctly).  Also - is the blackout solid or heavier in the front and more of an over spray towards the back - hope that makes sense...

shelbydoug

Coralsnake posted a couple of pictures of what the blackening looks like on a 68 with the scoop off.

Even though we are talking about two different years, the procedure is similar. Someone with a rattle can, shooting paint into the scoops until you don't see anymore body color.

I redid both my 67 and 68 in that area to my own liking. I don't like drips and runs. I just made it look more professional.

The way both factories did it, it just makes the black out look like an afterthought and a chicken soup solution but the black outs on the brakes looks worse. Those were done with a brush probably right over the flash rust already on the brake drums?
68 GT350 Lives Matter!

roddster

  The next question will be: Flat, satin, semi-gloss, or gloss black paint inside the scoop?
    Runs from satin to semi-gloss blass

shelbydoug

Quote from: roddster on April 17, 2020, 12:14:14 PM
  The next question will be: Flat, satin, semi-gloss, or gloss black paint inside the scoop?
    Runs from satin to semi-gloss blass

I think it was originally intended to be flat? Depending on how well the can got shaken depends on if it has any gloss or gloss at the top of the run and not at the bottom.

Do you want to be that accurate? Maybe have a couple of beers before you start and need to take a wicked piss to simulate the original attitude of the painter?
68 GT350 Lives Matter!

davez

Here is the front of my original paint car upper scoop
Some of the black remains

S7MS427

From Chuck Cantwell and Greg Kolasa's really excellent Shelby Mustang GT350 book, Chapter 12 (pages 147 and 148), in reference to the GT40 inspired upper "scoops" that were being designed by Charlie McHose for the upcoming '67 models:
McHose liked the form of those scoops, but he wrestled with their function for the Mustang: They were designed to push in cooling air for the brakes, while McHose wanted to pull air out of the Shelby's cockpit. He and I discussed his concept, and I thought of integrating a venturi into the inside of the scoop, to help draw air out of the passenger compartment.  The theory sounded good, but we needed to test a mock-up. He, Joe [Farrer], and Carl [Nasson], developed a prototype scoop that we attached over the opening where S FM 6S800's quarter window used to be. I got behind the wheel, Charlie got into the backseat and lit up a cigarette, and we drove past a bystander who confirmed that yes, as the car passed by,there was indeed cigarette smoke coming out of the rear of the air scoop. It wouldn't suck your hat off inside, but it did provide enough airflow to be functional, so those Mk II inspired air extractors (as he called them) became an integral part of the 1967 Shelby Mustang styling package.

And now you know. So, no holes, no slots in the front of the scoops. If you are at all interested in the design and development of the early Shelby Mustangs, pick up a copy of this informative book. I highly recommend it.  If you want to know who Charlie, Joe, and Carl were, you'll just have to buy the book.  Suffice to say that they were integral to the styling of the new for 1967 Shelby models and worked magic to create one of the most distinctive looking cars in automotive history.
Roy Simkins
http://www.s-techent.com/Shelby.htm
1966 G.T.350H SFM6S817
1967 G.T.500 67400F7A03040

shelbydoug

I always suspected it was just a cigarette smoke extractor?

It isn't closed from the front though. Take an air hose and blow it into the front. You will feel the siphoning effect it has on the small interior opening.

It's a clever design. It's maybe a good thing it was never called a McHose?
68 GT350 Lives Matter!

S7MS427

Quote from: shelbydoug on April 17, 2020, 08:12:27 PM
It isn't closed from the front though. Take an air hose and blow it into the front. You will feel the siphoning effect it has on the small interior opening.

It's a clever design. It's maybe a good thing it was never called a McHose?

Well yes there has to be some small opening to pass air in order to allow the thing to operate as a venturi. That's where the inner part of the extractor meets the outer part. There just aren't any drilled holes or cut slots.

McHose?  Ouch!
Roy Simkins
http://www.s-techent.com/Shelby.htm
1966 G.T.350H SFM6S817
1967 G.T.500 67400F7A03040

shelbydoug

Nothing like the scientific method of testing? Good thing they didn't do the toilet paper tuff test?
68 GT350 Lives Matter!

The Going Thing

Quote from: shelbydoug on April 18, 2020, 07:42:38 AM
Nothing like the scientific method of testing? Good thing they didn't do the toilet paper tuff test?
Now that would have been just shitty, Doug...