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 ...

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 ...

We may receive a commission on purchases made from links. Moe's Performance advertises gains of 29 horsepower and 16 lb-ft of torque at the wheels from the intake manifold swap. However, in addition ...