It's often very difficult to determine why one engine outperforms another. Basically there are two factors which govern available horsepower from an engine, volumetric efficiency and thermal ...

During the course of building, modifying or merely "sharpening up" an overhead valve V8 engine, the question of intake port alignment usually arises. With in-line and flathead V-type engines the ...

Intake manifolds may not be the most well-known automotive components, but that doesn't take away from their importance. These devices are responsible for sending a precise mixture of fuel and air to ...