A polished GReddy intercooler gets 3-in. hot side piping from Sound Performance and 4-in. cold side tubing that leads to a high-flow intake manifold, both courtesy of Virtual Works.

If you find oil in your intake manifold, it's not something that should be ignored, but what has caused it isn't always clear. Here the most likely culprits.

An intake manifold is composed of a plenum and runners that help distribute air to the intake port evenly to achieve the ideal fuel/air mixture ratio.

Vital to the performance of your car, learn all about the intake manifold gasket. Discover what the intake manifold does to the purpose of the gasket.

Lingenfelter Performance Engineering is offering up a new carbon fiber intake manifold, mating high strength and low weight for the LS3 and LS7 V8 engines.

A Weiand Street Warrior dual-plane intake manifold with the appropriate Vortec-style bolt pattern was installed onto the AFR heads.

GM is planning a new engine that will displace over 8 liters for use in future Class 7 commercial trucks. See more info on the new, high-displacement engine.

Corrective action: Dealers will replace the intake manifold. Warranty info: This service is being performed free of charge under Lexus’ federal emissions warranty, which is 48 months or 50,000 ...

GM released an improved intake manifold gasket design, and aftermarket/OEM gasket manufacturers such as Fel-Pro have improved design gaskets, but repeat problems can still occur.

To improve compatibility, the heads were designed to accept early or late intake manifolds and valve guides designed to avoid the retainer-to-guide shortcomings associated with OEM Vortec heads.

In the '50s and early '60s, aftermarket performance intake manifolds (and even many high-performance OEM systems) were typically designed to accommodate multiple carburetors, but that turned out ...