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Old 09-27-2020, 02:15 PM   #16
truckster
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Join Date: Jan 2001
Location: Orem, Utah
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Re: Looking at intakes and carbs

An air gap manifold has an air gap between the manifold valley and the runners (see the picture above). It's designed to keep the fuel charge cooler. The problem is that on a regular, street-driven engine, you actually need some heat to keep the fuel vaporized.
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