Airflow Research 4811 Eliminator Plane Intake Manifold Small Block Chevy Flange - Single 4150

The Airflow Research 4811 Eliminator is a high-performance single plane race intake manifold designed for Small Block Chevy 23-degree cylinder heads with standard port location, making it an excellent choice for larger cubic inch serious street/strip or a wide variety of race applications. This cast aluminum manifold is manufactured in the USA and features a carburetor pad height of 5.500 inches with a 4150 square bore carb flange.

Key Features:

• Operating range: 3,500-8,000 RPM
• Cast-in nitrous bosses for direct nitrous injection capability
• Front and rear water outlets for additional cooling benefits and custom cooling system flexibility
• Dual distributor clamp hold-downs for secure mounting
• Unique clover-shaped carburetor pad pattern specifically designed to optimize AFR cylinder heads
• As-cast port dimensions: 2.01 inches height x 1.09 inches width
• 23-degree manifold configuration for proper alignment with AFR heads

The Eliminator can be run as-cast right out of the box, though AFR recommends having the runner exits port-matched to your particular cylinder heads for optimal performance. AFR recommends using intake gasket #6901 and carburetor spacer #4450 (1 inch open) or #4460 (1 inch four-hole), both made from lightweight composite material to insulate fuel from heat soak.

Note: This product is designed for racing applications and uncontrolled vehicles only. Not legal for street use on emissions-controlled vehicles.