Idle-5500 RPM Power! Performer manifolds are dual-plane, low-rise intake manifolds with a 180° firing order and a patented runner design that delivers outstanding performance. This patented design greatly improves torque over a wide rpm range, especially off-idle through 5500 rpm. Provides crisp throttle response. Most Performer intakes are 50-state legal, when used with the correct carburetor and in the correct application.
* Note: 50-state legal for use on vehicles originally equipped with a 4-bbl carb.
