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#1 |
Senior Member
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Location: N.W. Arkansas
Posts: 456
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Cowl hood question
Does a cowl hood provide anything other than clearance and a different look?
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69 GMC 3/4 ton LWB 383 TH400 Dana 60 '84 300ZX '79 Nova (for sale) |
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#2 |
Registered User
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Location: East Central, MO
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Maybe vents a little hot air out, and then I'd can't prove that point either. They look good.
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#3 |
Registered User
Join Date: Oct 2004
Location: saskatoon, planet earth
Posts: 686
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Actually, it more likely lets cool air into the engine compartment. The original cowel induction hoods were designed to take advantage of the aerodynamic high presure area where the plane of the hood intersects the plane of the windsheild. There is a turbuulance at this intersection and wind is forced into the scoop portion. That, and they look really cool. They're also a lot more rigid than stock hoods becasue of the bends.
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#4 |
Stroke it!
Join Date: Feb 2005
Location: Juneau, Alaska
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Exactly what purple gas said. They are more than just for looks.
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Drog ![]() Nitrous is for those who don't know how to build. |
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#5 |
Senior Member
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Location: N.W. Arkansas
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So the consensus is that the overall effect other than "looking cool" is that they actually have a positive cooling effect on the engine compartment?
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69 GMC 3/4 ton LWB 383 TH400 Dana 60 '84 300ZX '79 Nova (for sale) |
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#6 |
Senior Member
Join Date: Apr 2000
Location: Delta,Pa
Posts: 14,950
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the air at the bottom of the windshield is very turbulent and under pressure so with a cowl hood u get air forced into the engine compartment resulting in a cooler denser air charge which helps a little bit
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Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member. |
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#7 |
Account Suspended
Join Date: Mar 2001
Location: Virginia Beach, Va. U.S.A.
Posts: 15,320
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A true cowl induction system has a rubber seal around the top of the breather that seals it to the hood. Inside the seal there is a hole in the hood under the top of the cowl scoop so that the air coming in through the cowl induction scoop is being forced into the engine's intake. 70 Chevelle SS had this. The truck cowl induction hoods are more for looks than anything.
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#8 |
Account Suspended
Join Date: Mar 2001
Location: Virginia Beach, Va. U.S.A.
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Here ya go, here's the parts that are required for a true cowl induction system. The little Solenoid in the middle of the pic is vacuum operated and opens the cowl induction plate at the top of the cowl hood at high speed.
Last edited by Randy70C-10; 03-13-2005 at 07:46 PM. |
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#9 | |
The LuvShack Garage
Join Date: Jan 2004
Location: Maple Grove, TN (West Side)
Posts: 30,477
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Quote:
AND YOUR POINT IS, I LUV MINE, EVEN THOUGH IT'S STILL IN THE BOX ![]()
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#10 |
Account Suspended
Join Date: Mar 2001
Location: Virginia Beach, Va. U.S.A.
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Well I'd love yours even more if it was on my truck. The coolness points are way up there on these, I just wanted to make sure that there's no mis-conceptions. As soon as I can afford one I'll have one too.
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#11 |
The LuvShack Garage
Join Date: Jan 2004
Location: Maple Grove, TN (West Side)
Posts: 30,477
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BOX, SURE YOU CAN HAVE THE BOX, AFTER I PUT MY HOOD ON 4/2/05
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Owner/Op: "TN Classic Transport Carriers" The Toy: "Square Vette" 72 Hybrid Blazer Toy Barn: "LuvShack" 40 x 60 x 20 Shop Tow Piggy:"Maddy" 88 Silverado 3500 Hauler: "Feathers" 14 Aluma 8218T |
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#12 |
Account Suspended
Join Date: Mar 2001
Location: Virginia Beach, Va. U.S.A.
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You're a real pal.
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#13 |
Registered User
Join Date: Aug 2004
Location: SW Washington
Posts: 947
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i got my for looks and it looks really good
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72 Chevy lwb, cowl hood, shaved antenna, shaved bedrails, blazer tank, sidemarker fill, 1pc windows, flowmaster 40's, alpine deck, infinity 6x9's, infinity 4"ers, 2 jl audio 10w0's, grant wheel, keyless entry and alarm, more waiting to be done... |
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#14 |
Senior Member
![]() Join Date: Sep 2004
Location: N.W. Arkansas
Posts: 456
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Thanks for the feedback and pictures. I think there may be a cowl hood in my future.
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69 GMC 3/4 ton LWB 383 TH400 Dana 60 '84 300ZX '79 Nova (for sale) |
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#15 |
F.A.S.T. president
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Location: Florida
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Randy is 100% right. Also the factory cowl induction are longer on the top and reach over the cowl a bit. The aftermarket hood you buy dont reach back far enough to take advantage of the pressure at the windshield. If you want it to really work you have to install the kit Randy showed us and buy a bolt on cowl hood that reaches closer to the windsheild. The non-functional ones still look great and I may be getting one myself
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