The new RHS 14-Degree Single Plane Intake Manifold is engineered specifically to fit RHS 14-degree cylinder heads with a 5-degree intake face. With a tall profile and long runner design, the new manifold provides the power and strong torque curve throughout the mid RPM range that is required for circle track and drag race applications up to 400c.i. This manifold offers the simplicity of a one-piece design with integral water crossover and a lightweight flange for weight critical applications. Female pipe fittings at all four corners allow external water lines for reverse cooling applications. And, with a 4150 flange the RHS® 14-Degree Single Plane Intake Manifold is easy to install in most popular Small Block Chevy applications.