OBJECTIVE: Wet flow, pressure excursions, port volume, runner length, plenum volume—all these figure into an engine's overall efficiency. But there's more… Sometimes theory is neat, but sometimes it ...

While C&L's intake plenum isn't designed to be a dress-up item, its functional form looks more natural than the hard-edged stock plenum box. What the 4.6 GT engine needs is a good $100 bolt-on, and we ...

What’s the first thing you look at when checking out someone’s engine bay? Chances are the intake manifold is at the top of that list. The type of intake manifold can tell a lot about it; stock ...

For most gearheads, there's nothing quite thrilling like the roar of a tuned engine and the instant kick of improved acceleration. Of course, buying a muscle car to enjoy lots of raw power and torque ...

At first glance, it's easy to take a Pontiac intake manifold for granted. It appears to be nothing more than an intermediate component that's used to connect the carburetor to the cylinder heads. But ...