Online discussions concerning intake manifolds and whether or not they genuinely affect engine performance are very common. We'll try to find the answer, but ford 302 windsor intake manifold offers some great information on the subject. The box that rests on top of the engine and houses the carburetor and fuel injectors is known as the intake manifold. It regulates the amount of air that enters the combustion chamber and decides how much of that air is actually burned by the fuel to produce electricity. https://www.totalperformance.net.au/~25557