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Old 08/07/2007, 01:32 PM   #1
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Question Oval Air Cleaner Wingnuts ...

In March of '68 a tech bulletin came out regarding the Shelby oval air cleaner wingnut configuration (see this link: http://www.thecoralsnake.com/intakes.HTML ).

Question: for those who have these air cleaners (or at least have seen them), what do you have in place?
Both wingnuts?
Modified to 1 wingnut?
Or do you own the more modern version which already comes with 1 wingnut?

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Old 08/07/2007, 02:32 PM   #2
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My March built GT-500 has the single-post/one-wingnut arrangement with the plugs in the holes. It is original to the car.

Scott

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Old 08/07/2007, 06:43 PM   #3
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Nowhere near Scott's original, but I have a modern version with 2 wing nuts on my '66 with 351W, and it definitely twists around. I am always having to straighten it. Fortunately I have electric choke on Edlebrock 4 barrel, so no issues related to that. Just wanted to confirm the twisting problem noted on the site. Casey

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Old 08/08/2007, 06:48 AM   #4
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Smile

BTW, when I said earlier by "modern version" I meant this:

http://www.fordracingparts.com/parts...rtKeyField=161

... this type doesn't have the 2 wingnut locations, it just has a single center location ...

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Old 08/08/2007, 01:12 PM   #5
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Quote:
Originally Posted by case12 View Post
Nowhere near Scott's original, but I have a modern version with 2 wing nuts on my '66 with 351W, and it definitely twists around. I am always having to straighten it. Fortunately I have electric choke on Edlebrock 4 barrel, so no issues related to that. Just wanted to confirm the twisting problem noted on the site. Casey
I have the oval air cleaner with 2 wingnuts.. ...using a manual choke on a Holley 600. Steve
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Old 08/08/2007, 01:58 PM   #6
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Quote:
Originally Posted by Mustanger View Post
BTW, when I said earlier by "modern version" I meant this:

http://www.fordracingparts.com/parts...rtKeyField=161

... this type doesn't have the 2 wingnut locations, it just has a single center location ...
That's what I have on my car. Don't have any twisting issues. Casey's car must just put out too much torque!

Personally, I think the new double post units look better than the single posts.
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Old 08/12/2007, 07:30 AM   #7
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A little background on the oval air cleaners as I understand them.

Designed for three 2-V's, and dual quads or two 4-V's carburetors.

The two wingnut design lid is from the two 4-V version. A different base was cast for use with a single 4V carburetor. Studs were put in place to correspond with the lid for assembly. The air cleaner stud had to be removed from the 4V carburetor for use. That twisting problem is what brought on the modification.

I believe that the earliest versions of this style air cleaner were for the 1956 Thunderbird, available over the counter from Ford.

Scott Behncke
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