Cowls are actually designed to take air from the high pressure area and feed a closed off carburetor with cold air. I guess they made it into our fuel injected cars because so many like the style. I have mine on for the looks, and weight savings -- it's a Kaenen & is probably the lightest available foxbody hood -- and they can also help when you have a taller motor and/or intake. They definitely do allow the air to vent at idle, as I can see the distorted air from the heat rise. I'm not sure how effective they are at cruise or high speed for cooling the engine bay, but I would imagine they hurt radiator flow to some degree. My personal favorite, and likely to be just about best for the radiator is the '03 Cobra-style heat extractor hood. Can't get over how good it looks on Father Time, too:
It was the right call for Father Time, and gave me the 2" Kaenen Cowl hood to swap out Black Jack's stock hood for free:
If this is hijacking, I'm happy to pull the post back down.
Anyways, I still think your louvers will be better than a cowl hood for radiator heat extraction, and frankly it's more unique & better looking when done right, IMO.
It was the right call for Father Time, and gave me the 2" Kaenen Cowl hood to swap out Black Jack's stock hood for free:
If this is hijacking, I'm happy to pull the post back down.
Anyways, I still think your louvers will be better than a cowl hood for radiator heat extraction, and frankly it's more unique & better looking when done right, IMO.









