C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Cowl induction hood

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Old May 10, 2003 | 10:26 PM
  #1  
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Default Cowl induction hood

Is anyone running one of these hoods on a c-4?Did it decrease engine temp dramatically?Who makes the best hood? :chevy
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Old May 10, 2003 | 10:35 PM
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Default Re: Cowl induction hood (nopain1984)

Toledo Pro and Vanacor are the only one's that I know of that make a cowl hood for the C4. I like the looks of the Toledo Pro hood better. Don't know about how much temp drop you can expect. Both are pricey in the $1200.00 + range, plus then you have to have them painted to match your car.
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Old May 11, 2003 | 08:27 AM
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Default Re: Cowl induction hood (nopain1984)

Maybe you could tell us what you want to do.
If a cooler running engine is your goal, there are cheaper/better ways to go about it. It's not necessary to have a cowl induction hood to have a cool running engine. My engine runs at about 149F on the freeway and 180F around town with the stock hood. Seldom do the fans come on in normal driving.
BIG JIM
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Old May 11, 2003 | 09:43 AM
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Default Re: Cowl induction hood (nopain1984)

Its not going to decrease your engine temps that much.

You have to do things like: better water pump, lower tstat, fan settings, bigger radiator to make it cooler.
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Old May 11, 2003 | 10:57 AM
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Default Re: Cowl induction hood (vader86)

http://www.c5west.com/dex.html
(WAIT FOR THE SITE TO LOAD, LOOK UNDER HOOD SCOOP)
you don,t need to spend that much, look at the hood scoop above, it costs about $250 plus install and paint, youll most likely spend an easy $500 plus but thats less than the $1000 plus your talking about. its easy to modify for a ram air feed of cooling air to the engine compartment, and no theres not a huge drop in engine temp. under hood temps yes because at almost any speed the constant flow of cool air over the upper engine and out the gill slits and below the headers absorbs and removes some heat,bbut not engine temps. even with the cool air feed, and there would be even less with only the back cowl area open like on most cowl induction style scoops

heres other choices
http://www.up22.com/scoopw1.htm








[Modified by grumpyvette, 9:44 PM 5/11/2003]
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Old May 11, 2003 | 03:51 PM
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Default Re: Cowl induction hood (vader86)

The engine is not running to hot(170-180 highway 180 -200 town).It's the engine compartment itself.I am running a 383 with tpis headers(carb). The 2in /14in air cleaner just clears the hood(tight)I am looking for better air flow and decreased air temp under the hood(the oil breather seals get very hot/tend to leak.)I am running a 180t-stat,high flow pump,large rad,1.5 diam hoses(evans system). Does anyone have the system that corvette america used to sell (side mounted fans, by a- arms?)Thanks for the help .Also hood is getting very hot by air cleaner, afraid it is going to damage my paint! :chevy
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Old May 11, 2003 | 04:11 PM
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Default Re: Cowl induction hood (nopain1984)

Are your headers coated?Jet-coat claims their coating lowers under hood temps dramaticly.They show a running engine with a temp gun reading the headers at 200 degrees. :chevy
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Old May 11, 2003 | 04:39 PM
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Default Re: Cowl induction hood (SPEED750)

Yes they are ceramic coated but you can notice that your feet are alot toaster than the stockheaders(1984) :chevy
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Old May 11, 2003 | 07:30 PM
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Default Re: Cowl induction hood (nopain1984)

nopain,
What intake & carb combo are you running that clears the hood?
Dave :confused:
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Old May 11, 2003 | 09:31 PM
  #10  
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Default Re: Cowl induction hood (new92racer)

I am running a 650 demon carb and a brodix hv1016 intake(brodix track 2) heads) :auto:
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Old May 11, 2003 | 10:29 PM
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Default Re: Cowl induction hood (nopain1984)

I had my cowl induction hood made, lots of work and no one makes a decent cowl induction that looks good on the Corvette. I wanted the factory groove in the center, not the small peak that was modeled from a '67 Camaro. If you have the sigs on you'll see it...


[Modified by vetracer, 8:30 PM 5/11/2003]
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Old May 17, 2003 | 04:20 AM
  #12  
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Default Re: Cowl induction hood (HWoods)

HWoods,
I love the attitude your vette has.....what did you do to lower the front end????
Is it the wheels/tire combination or what...please let me know....
I just love the way your vette sits.....
tony
:cool: :cheers: :cool:


[Modified by oldace84, 1:25 AM 5/17/2003]
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Old May 17, 2003 | 04:24 AM
  #13  
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Default Re: Cowl induction hood (nopain1984)

Just a foot note...all '84 hoods have cold air induction.....you can make it better by cutting the radiator shroud...and installing weatherstripping....to make a good seal.....check it out on the CrossFire Forum......forgot the URL...but someone must have it for you....
and believe me this mod really WORKS......................
tony
:smash:
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Old May 17, 2003 | 06:35 AM
  #14  
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Default Re: Cowl induction hood (nopain1984)

Yes they are ceramic coated but you can notice that your feet are alot toaster than the stockheaders(1984) :chevy
The jet hot coating will not cure this problem one thing that helped a lot was the header wrap it made a huge difference in my car but increased air flow will help also.
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Old May 17, 2003 | 08:46 AM
  #15  
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Default Re: Cowl induction hood (black bart)

i have the vanacor hood on mine and my underhood temp went down about 30-40 degrees only paid $900 for mine at carlisle if you get them at a large corvette show you will save a lot :cheers:
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Old May 17, 2003 | 04:08 PM
  #16  
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Default Re: Cowl induction hood (grumpyvette)

Grumpy,thanks for the hood scoop info.Paul :steering:
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