Product Description Cast aluminum intake manifold. Satin finish. Suitable for Chevy Small Block 265 350 400 engines. Dual plane intake style. The basic operating RPM range is idle to 5500 RPM. Intake Manifold Center Maximum Height: 4.8" Engine Block Style: Stock/OEM Standard Deck Carburetor Quantity: One Cylinder Head Type: Standard Air gap's design keeps hot engine oil away from intake runners resulting in a cooler, denser charge for more horsepower, torque, and efficiency. Package Description Including all items in the picture. Note: Professional installation is highly recommended (No instruction included). We have multiple warehouses from which your package will be shipped.