Performance Intake Manifolds

An intake manifold is a cast iron, aluminum, or plastic engine component (usually one piece but can involve a lower and upper intake manifold assembly) that directs and distributes the air and fuel mixture from the carburetor or throttle body into the cylinder heads. The mixture is then ignited in the combustion chamber and pushes down on the pistons, moving the engine block rotating assembly. It is sealed to the cylinder heads and block with an intake manifold gasket. Some late model factory manifolds use an intake manifold valve that varies the length of the intake manifold runners / passages to adapt to different driving conditions, improving horsepower and torque.

A custom or performance intake manifold has improved runners and passageways, allowing better fuel and air mixture flow from the carb or throttle body to the cylinder heads. This improves engine efficiency and horsepower. Replacing a factory cast iron intake manifold with an aluminum version also helps save weight as well as allow better heat dissipation that the lighter alloy creates. It is important to correctly match the runner length and carburetor pad height to the rest of the engine components for maximum performance.

Depending on the material the intake manifold is made from, the steps to clean it will differ. In most cases, first use a soft cloth with mild detergent to wipe down the intake manifold, removing any loose dirt or contamination. For more stubborn areas, an appropriate brush that will not damage the finish can help to break up further discoloration and staining. Engine degreasers and cleaners can also be used for tough stains.

A JEGS expert is ready to answer your questions and help you find the performance intake manifold, intake manifold gasket replacement, intake manifold tuning valve, or other accessory that you require for your specific car (for example, Ford Mustang) or truck application.