Aluminum Cylinder Heads

The Summit Racing SUM-162111 aluminum cylinder heads are engineered to offer a balance of performance and value for small-block Chevy applications. Key specifications include a 64cc chamber volume, which helps to increase compression ratios, and 200cc intake runner volume for enhanced airflow to the cylinders. The heads are equipped with durable ductile iron valve seats. The product information indicates compatibility with conventional Gen-I SBC cylinder heads, specifically 23-degree heads with an early perimeter style valve cover and pre-1987 configurations. They are suitable for various small-block Chevy engines including the 302, 327, and 350 cubic inch displacements. These cylinder heads are an assembled pair ready for installation. Ensure proper fitment with your specific engine build, particularly regarding valve cover style and pre-1987 engine configurations.