Intake Manifold - 4.0 Port Windsor 9.5

The Intake Manifold - 4.0 Port Windsor 9.5 by Cylinder Head Innovations is engineered for serious engine builders and performance enthusiasts seeking to maximize airflow and fuel distribution in small-block Ford Windsor platforms. This precision casting addresses a critical bottleneck in naturally aspirated engine combinations: the stock manifold's restricted runner geometry and inconsistent velocity profiles that rob horsepower and throttle response. Whether you're building a street cruiser, weekend race engine, or restoration project with modern performance aspirations, this manifold replaces the factory casting with geometry optimized for 4.0L displacement and 9.5-inch deck heights—a popular specification for stroked or bored Windsor builds.

Manufactured by Cylinder Head Innovations, this intake manifold features port-matched runner passages that promote laminar flow and reduce turbulence, resulting in improved volumetric efficiency across the rpm band. The casting design accounts for the specific combustion chamber geometry and valve timing windows typical of performance Windsor heads, ensuring proper plenum velocity and even fuel metering to all eight cylinders. At 28.6 lbs, the manifold's weight distribution is optimized to maintain proper engine bay balance while its 12.3 x 9.5 x 21.5-inch footprint integrates seamlessly with standard Windsor engine compartments and transmission tunnel configurations. The manifold's surface finish and material composition ensure durability under sustained high-rpm operation and elevated intake temperatures associated with forced induction preparation or naturally aspirated tuning.

This manifold is ideal for Windsor enthusiasts upgrading from restrictive OEM castings or transitioning to a performance-grade platform that matches modern cylinder head flow characteristics. Compatibility is specific to 4.0-liter Windsor applications with 9.5-inch deck heights—verify your block, head, and piston combination before purchase to ensure proper valve-to-piston clearance and bolt-hole alignment. Installation requires standard intake manifold gasket set and fasteners (not included); port matching to your specific head casting will optimize results. Whether paired with a carburetor, single-plane aluminum manifold, or fuel injection conversion, this casting provides the foundation for measurable gains in mid-range torque and peak horsepower delivery on both street and strip applications.