Editor's Note: As inanimate as intake manifolds may appear, they provide a path to both major and minor on-track power gains. Selection is one thing; "tuning" them to specific applications is a blend ...

In the first installment we dealt with the essentials of spec intake manifolds. The story was intended to establish a level of understanding that would enable more specific information to be helpful, ...

The intake manifold on your Toyota VVTi engine is represented by those plastic tubes that reunite at some point in a large tube right behind the radiator. Their function is to allow filtered air to ...

Internal combustion engines are fairly simply machines. When you break it down, they are nothing more than air pumps. When it comes to making horsepower and torque, the simple fact is the more air you ...

Horse Sense:The more we test the GT-40 intake manifold, the more impressed we are. It's well over 15 years old and it's still being compared to the most contemporary hot-rod intakes. Not many cams, ...