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functional cowl indution hood

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Old May 1, 2012 | 08:58 AM
  #1  
taonindo's Avatar
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Car: 82 firebird
Engine: 406
functional cowl indution hood

did a search on cowl induction and seen a lot of nice hoods, found nothing on where it meets the carb. does the carb need to be sealed off from the under hood air? or should it be sealed off? thanks
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Old May 1, 2012 | 10:24 AM
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Re: functional cowl indution hood

NEED to be sealed? No. CAN you seal a carb or TBI to a Cowl Induction hood? Yes.

But a lot of 3rds are TPI, LT1 or LS1 (includes the LQ-series engines) so sealing those engines intakes to a Cowl Induction hood is rather difficult to do. It is possible to do, but the amount of fabrication required to seal those engines to utilize a Cowl Induction hood would require some interesting duct work.
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Old May 1, 2012 | 06:53 PM
  #3  
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Re: functional cowl indution hood

my bad .... to be a little more clear, should it be sealed off from the under hood air. nothing is stock including the engine position... to make a long story short theres a hole in the hood and the air cleaner sticks through the hood, i have a "cowl" covering the air cleaner.... am i making any sense? lol ill try to post some pics if that would help. thanks agian
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Old May 2, 2012 | 09:05 AM
  #4  
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Re: functional cowl indution hood

search again, not long ago there was a whole thread devoted to the same question, i know 86TA has a functional cowl
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Old May 2, 2012 | 09:42 AM
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Re: functional cowl indution hood

As a car punches through the stagnant air at high speed, there are a number of areas that tend to accumulate high-pressure pockets. The front bumper, grille, headlights, windshield and wheel-well are the most common areas.

Since engines make more power with cool outside air than the hot ambient air found in the engine bay, it seems logical to tap these high-pressure pockets to feed air to the engine. In addition to lowering air temperature, increasing the air pressure around an intake artificially crams more air into the engine than the static air could, which is similar to how a supercharger functions.

Cowl induction hoods can help to smooth the airstream passing over a car at speed, but can be more of a detriment to high-speed handling than anything else. If the cowl inductor is not sealed to the intake, the cowl can actually pressurize the engine bay at high speeds. This can lift the front of the car slightly, causing a dangerous understeer condition at speeds over 150 mph.


Read more: Pros and Cons of a Cowl Induction Race Hood | eHow.com http://www.ehow.com/about_5571485_pr...#ixzz1tiuWrd6T


this is what i was looking for. i only see slightly over 100 mph so im not sure what ill do.
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Old May 9, 2012 | 01:22 AM
  #6  
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Re: functional cowl indution hood

Not sure if I'm understanding your question completely but, You need a half bulge hood,(formula, 82-84 trans am), with the cowl induction assembly and solenoid. you will also need a air cleaner lid with rubber boot from 82-84 trans-am. These are the only 3 years those hoods were functional with a few exceptions.
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Old May 9, 2012 | 01:25 AM
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Car: 89 Formula
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Re: functional cowl indution hood

I have a functional cowl bulge hood system on my 89 formula. It took alot of hunting around to get all the parts required, but I love it. Any questions, just ask. I'll help any way I can. I also have some parts for that.
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Old May 9, 2012 | 01:34 AM
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Re: functional cowl indution hood

Originally Posted by taonindo
my bad .... to be a little more clear, should it be sealed off from the under hood air. nothing is stock including the engine position... to make a long story short theres a hole in the hood and the air cleaner sticks through the hood, i have a "cowl" covering the air cleaner.... am i making any sense? lol ill try to post some pics if that would help. thanks agian
Ah...I understand now what your aiming for by reading your other posts after this one.

Here is 1 pic that does what your looking for. Not the picture I was looking for but I'll keep searching for it.
Attached Thumbnails functional cowl indution hood-100_0563.jpg  
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Old May 9, 2012 | 01:41 AM
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Transmission: 700R4
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Re: functional cowl indution hood

Use this to seal an open element filter to the hood.


http://www.summitracing.com/parts/MOR-97070/
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Old May 10, 2012 | 08:56 AM
  #10  
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Re: functional cowl indution hood

i uploaded a pic that shows a small problem... my stb is about 1/4 inch from the air cleaner.
Attached Thumbnails functional cowl indution hood-cimg2529.jpg  
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Old May 10, 2012 | 09:09 AM
  #11  
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From: Central Texas
Car: GTA
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: Aussie 9-bolt/3.27 posi
Re: functional cowl indution hood

Trying to think of options for you.....

It looks home-fabbed (nothing wrong with that, just means that you can fab so....) could you cut out the middle & replace the cut out section with a piece lower to go under the filter box?

Os use a filter spacer to raise the filter up & a shorter filter, to use a filter box like the one from Summit.

Or just buy the foam to seal to your hood & build your own filter box.
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Old May 10, 2012 | 02:00 PM
  #12  
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Re: functional cowl indution hood

Originally Posted by BlackenedBird
Trying to think of options for you.....

It looks home-fabbed (nothing wrong with that, just means that you can fab so....) could you cut out the middle & replace the cut out section with a piece lower to go under the filter box?

Os use a filter spacer to raise the filter up & a shorter filter, to use a filter box like the one from Summit.

Or just buy the foam to seal to your hood & build your own filter box.


good ideas, thanks. ill be messing with the car this weekend and see what i come up with
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Old Jan 27, 2015 | 08:50 AM
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Re: functional cowl indution hood

Originally Posted by BlackenedBird
NEED to be sealed? No. CAN you seal a carb or TBI to a Cowl Induction hood? Yes.

But a lot of 3rds are TPI, LT1 or LS1 (includes the LQ-series engines) so sealing those engines intakes to a Cowl Induction hood is rather difficult to do. It is possible to do, but the amount of fabrication required to seal those engines to utilize a Cowl Induction hood would require some interesting duct work.
This is an older post, but this is something I'm looking into now. I have a future plan to go Fuel Injected and have been looking into ideas to somehow also connect the cowl induction set up on my 84 T/A to the new CAI ducting I'll be using for the miniram.
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