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Bottom Air Intake Scoop '68

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morbank

Number of posts : 161
Location : Thousand Oaks, CA
Age : 43
Registration date : 2014-07-30

Bottom Air Intake Scoop '68

Post by morbank on Sat Aug 30, 2014 12:13 pm

When I bought my van I was given some miscellaneous parts, one of which is an air intake scoop that mounts on the undercarriage and feeds the radiator. I was wondering if this was a factory part, or aftermarket? Is it worth installing? And what's it's actual name?

Thanks,
Clay
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vanny
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Re: Bottom Air Intake Scoop '68

Post by vanny on Sat Aug 30, 2014 12:21 pm

I believe it's called a belly pan or air scoop and helps keep the radiator from overheating while driving at normal to faster speeds. Never hurts to keep air flowing through the doghouse.


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morbank

Number of posts : 161
Location : Thousand Oaks, CA
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Re: Bottom Air Intake Scoop '68

Post by morbank on Sat Aug 30, 2014 2:57 pm

Thanks Vanny!
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Vantasia

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Re: Bottom Air Intake Scoop '68

Post by Vantasia on Sun Aug 31, 2014 7:58 am

Is this the factory belly pan with the louvers in it or an additional scoop that attached below it? Ya gotta watch with these things, My PO tried a similar device and the van actually runs cooler, about 10 degrees, without it. The louvers are designed to suck air up as you move forward from pressure off the ground and enhance the air flow through the grill; adding a scoop negates this effect and slows the air flow into the slots, at least my experience. I wouldn't mess with GM's wind tunnel test results, if it needed a scoop, they would have put one on from the factory....best thing to do is try it and see what happens?
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morbank

Number of posts : 161
Location : Thousand Oaks, CA
Age : 43
Registration date : 2014-07-30

Re: Bottom Air Intake Scoop '68

Post by morbank on Sun Aug 31, 2014 1:33 pm

I don't know if it's a factory belly pan or not. Can anyone verify?

Link below shows a picture of the belly pan installed on my van:

http://goo.gl/TGjovt
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wideload
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Re: Bottom Air Intake Scoop '68

Post by wideload on Sun Aug 31, 2014 1:48 pm

Yes that's a factory belly pan. It not only aids in air flow to the radiator but helps block out debris from the road. Their pretty hard to find, most were left off at some point for convenience of access to the underneath.


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morbank

Number of posts : 161
Location : Thousand Oaks, CA
Age : 43
Registration date : 2014-07-30

Re: Bottom Air Intake Scoop '68

Post by morbank on Sun Aug 31, 2014 2:05 pm

Nice! It's in pretty good shape too, considering how thin the metal is.
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Vantasia

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Re: Bottom Air Intake Scoop '68

Post by Vantasia on Mon Sep 01, 2014 8:36 am

Yes, that one looks pristine! Now what you need to look for are the two side extensions from the pan called splash shields, you will see all the holes for them at the back of the pan and under the frame and crossmember. They help keep mud, ice and snow from hitting the brake lines and getting up in the engine box, but if you aren't daily driving under those conditions, don't worry about them, hard to find, I just got a set after over a year of looking. Search the threads to see pics of them. Just mount your pan up there nice and tight. There were 1/4-20 clip on speed nuts at the front edge and on the rear mounting holes. They can be found new if any are missing or stripped. If its too close to the bottom of the radiator, it may rattle at highway speeds, if so, bend it down a bit or put a strip of foam pipe insulation between the pan and bottom of the radiator, this stops that.
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morbank

Number of posts : 161
Location : Thousand Oaks, CA
Age : 43
Registration date : 2014-07-30

Re: Bottom Air Intake Scoop '68

Post by morbank on Mon Sep 01, 2014 10:34 am

Great info Vantasia! I'm in California so not too much weather to worry about but those splash shields look like a good way to go. Luckily I still had all of my 1/4-20 clips attached to the frame (rust finally comes in handy!). One bolt hole edge at the rear of my belly pan was torn off at some point but with all the other bolts in place I'm hopeful it won't move around too much.
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Vantasia

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Re: Bottom Air Intake Scoop '68

Post by Vantasia on Mon Sep 01, 2014 6:31 pm

Here is a link to a pic from Donivan showing those shields
http://vintage-vans.forumotion.com/t42364-1967-chevy-van-engine-covers-150-vancouver-wa#196514

I think the 2nd gen has 4, the 1st gen only had two. They also help with cooling by directing airflow out over the exhaust I'm told....

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