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1997 to 2003 F-150 4.2L, 4.6L, and 5.4L equipped F-150s

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Old Fri, April 2nd, 2010, 04:22 PM
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Originally Posted by cody994x4 View Post
i had no idea there was so much more to intakes than i knew before,i guess it reflects 'marketing'...... im glad i didnt buy one.

ill b doing the gotts and a k&n filter, this thread made me curious abt lightnings though, i wonder if they have the same stock opening at the fender well, for the supercharger on these 5.4s
That is a good question. I know that some of the aftermarket S/Cs use a CAI style filter at the end of the intake pipe but I've never looked under the hood of a stock S/C F150. As long as you leave the intake sensors and their surrounding housings alone, you can do whatever you want to the intake.
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Old Fri, April 2nd, 2010, 05:07 PM
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i guess this would apply to hoods also. although they take in more air than a hood w no induction they fail to create more pressure, not to mention delivering it into the throttle body/intake manifold at 100% efficiency.
One thing I read is that when the vehicle is travelling, the body creates an airfoil around it and that the pressurized airflow is actually about 2-3 inches above the hoodline. This means that your hood scoop would need to be at least 3 inches or higher to have ANY effect. Otherwise, you are actually operating in a vacuum.

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Old Fri, April 2nd, 2010, 05:11 PM
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Even if they are considered ineffective I still wouldn't mind having one.
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Old Fri, April 2nd, 2010, 05:39 PM
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One thing I read is that when the vehicle is travelling, the body creates an airfoil around it and that the pressurized airflow is actually about 2-3 inches above the hoodline. This means that your hood scoop would need to be at least 3 inches or higher to have ANY effect. Otherwise, you are actually operating in a vacuum.

Fun stuff, ain't it?
The pitot tube opening, that picks up ram air pressure for aircraft speed is positioned quite a bit away from any part of the fuselage or wing for that very reason.

Much of what we'd "guess" in aerodynamics is just plain wrong!

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