A high-performance intake manifold configuration consisting of three two-barrel carburetors mounted in a row. The engine runs on the center carburetor for normal cruising to maintain drivability, while the outer two carburetors open under heavy acceleration to flood the engine with fuel and air. It is most famously associated with classic Chrysler, Dodge, and Plymouth muscle cars.
Heard on the job
We're pulling the single four-barrel off the Challenger and bolting on a factory six-pack setup.