Cowl Vs Ram Air Hood - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2006 - 2009 TrailBlazer SS Tech > 06-09 SS Appearance > Exterior

Exterior Exterior repairs/modifications

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  #1  
Old 02-18-2009, 02:03 PM
CVnCR CVnCR is offline
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2006 Chevy TrailBlazer SS
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Cowl Vs Ram Air Hood

Looking for comments and thoughts around the Cowl hood vs the Ram air hood? I like the looks of the Cowl hood but was wonder about the performance. Also looking for links to purchase the hood...

Thanks,

CV
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  #2  
Old 02-18-2009, 03:04 PM
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glfredrick glfredrick is offline
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My experience with these styled hoods in other vehicles indicates to me that performance is probably a wash with either one, so select for style.

About the cowl induction principle:

The base of the windshield is a high pressure air area, so the air gets in as good there as from a front-facing scoop.

On my off-road Explorer, I used a small eBay plastic hood scoop facing backward and pointing to the cowl area, and even with that had noticable change in air flow and throttle responsiveness, even though I was still pushing the air through the factory air box with a True Flow filter.

On my earlier Chevelles, the cowl induction was a worthy addition, and after 7 different cars with various engine setups, I found the cowl hood worth the cost to install for performance sake.

Of course, we know that front-facing scoops work well also. That is a natural expectation from anything facing into the wind.

I sort of like this hood myself... (Vendor price seems high, no recommendation of the vendor!)
http://www.cincyramairhoods.com/chev...lazerhood.html

Here is another

http://aftermarket-hood.com/Shop_On-Line.htm


Quote:
4.2/6 cylinder engine Ram-air upgrade, Only Fits Goodhoods Non-Returnable

This dyno-proven functional ram air upgrade adds 6 HP and 14 foot pounds of torque or more when used with this Keystone functional ram-air hood. It can also be used with any stock or aftermarket hood but without ram-air effect. Easily installed in place of factory air cleaner box. Only Fits Goodhoods Non-Returnable. [B]Stock #GH-GBXTR
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  #3  
Old 02-18-2009, 11:51 PM
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i just found this hood today:
http://www.mpd-inc.net/projects.htm

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Old 02-19-2009, 07:50 AM
CVnCR CVnCR is offline
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Sweet Hood

Thanks - That's the hood I am going to get...
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Old 02-20-2009, 06:56 AM
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csc06ss csc06ss is offline
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Here's another hood that you might be interested in!

<"(((><

Scott


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Old 02-20-2009, 04:52 PM
CVnCR CVnCR is offline
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WOW Very Nice - Where can I get one...

Does it have air intake? How does it link up with air box? Can you send me the link where I can get one?

Thanks

CV
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Old 02-20-2009, 07:24 PM
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Originally Posted by csc06ss View Post

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Old 02-21-2009, 12:25 AM
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csc06ss csc06ss is offline
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Quote:
Originally Posted by CVnCR View Post
Does it have air intake? How does it link up with air box? Can you send me the link where I can get one?

Thanks

CV
It's a heat extracting cowl, which means that it allows the hot air to excape from under the hood. This will allow cooler air to be drawn into the intake. God bless! Scott
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  #9  
Old 02-21-2009, 01:23 PM
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glfredrick glfredrick is offline
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I wrote an asked about the cowl induction hood.

It does have an air-box provision cast into the bottom, which will hook up to a modified air box in the stock location.

Here is a picture sent to me from Eric of http://www.mpd-inc.net/ .
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  #10  
Old 02-21-2009, 04:27 PM
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MikeyDizzle MikeyDizzle is offline
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Quote:
Originally Posted by csc06ss View Post
Here's another hood that you might be interested in!

<"(((><

Scott


That is FREAKING BEAUTIFUL.....
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