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B4U Task Force Admin
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34,460 Posts

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B4U Task Force Admin
Joined
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34,460 Posts
The guy built a very nice custom truck, a ton of time spent I'm sure, I say well done. Okay sure he could have worked on some ducting to allow the pretty much worthless cowl induction Chevrolet added to the '70-'72 Chevelle running it into the airbox. Too bad this post went south.

I just never understood what the engineers were trying to accomplish, opening a vent a top the rear part of the hood where the slip stream is causing a vortex sucking out air. Well without seeing the wind tunnel results of such a door, I suppose it could cause a back flow at the angle change at the rear edge of the hood and the windscreen (windshield).

I'll keep the Ram Air setup on my '71 442 W-30.
You have no idea how a cowl hood works. When a vehicle is moving 15mph+, high pressure builds at the base of the windshield. Even with my "for looks only" cowl hood, I can tape a ribbon or two to the back of the hood near the vent. When I start driving, the ribbons flutter, then they get sucked to the vent opening.
 
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