Chry B/B Wedge Action P.

The Chry B/B Wedge Action Plus Intake Manifold by Weiand is a premium performance upgrade designed for serious Chrysler big-block engine builders and street/strip enthusiasts. This intake manifold addresses the core challenge of maximizing airflow efficiency while maintaining structural integrity in high-horsepower applications. Whether you're building a 440, 413, or 383 big-block for competition or daily-driven power, the Wedge Action Plus delivers the geometry and port design needed to unlock hidden performance without requiring additional carburetor or fuel system modifications.

Weiand's Wedge Action design features optimized intake runner profiles that promote smooth, efficient fuel and air mixing across the entire rpm band, from idle to peak horsepower. The manifold's wedge-shaped port entries reduce turbulence and flow restrictions that plague stock castings, allowing better cylinder charging and more complete combustion. The aluminum construction keeps weight low while the rigid design minimizes flex under boost or high cylinder pressure, ensuring consistent performance and reliability. Precise port matching to your cylinder head is critical; Weiand engineers the exit ports to align with modern big-block heads for maximum flow transition without dead spots.

This manifold is ideal for Chrysler B/B engine platforms—440, 413, and 383 big-blocks—making it a standard choice for classic muscle car restoration, drag racing, and street performance builds. Installation requires careful port matching, quality gaskets, and carburetor compatibility verification to ensure no vacuum leaks. The 16.6 lb weight and compact footprint (14.2 x 7 x 22.3 inches) make it suitable for engine bays with tight clearance, though under-hood routing of fuel and vacuum lines should be planned before fitting. Pair with a quality four-barrel carburetor and properly tuned ignition timing to realize the manifold's full potential and consistent 50–100+ horsepower gains over stock.