{"product_id":"bare-aluminum-cylinder-head","title":"Bare Aluminum Cylinder Head","description":"The Pro Comp PCE281.1488 is a high-performance bare aluminum cylinder head specifically engineered for Big Block Chevy 454 engine applications. Featuring a 320cc intake runner volume and a 119cc combustion chamber, this head is designed to provide improved airflow characteristics for demanding engine builds.\n\nThis unit is cast using a gravity die process to ensure uniform construction and robust durability. It utilizes a rectangular port design, which is recommended for engines exceeding 500 horsepower and displacement configurations under 540 cubic inches. As a bare cylinder head, it provides a foundation for custom valvetrain setups, though users must ensure compatibility with appropriate valves, springs, and associated hardware.\n\nProfessional installation is highly recommended to ensure proper valve geometry and sealing. Because this is a bare casting, users are responsible for sourcing and installing all necessary valvetrain components, including valves, springs, retainers, and locks. Always verify that your specific valvetrain setup aligns with the 320cc runner and 119cc chamber volume specifications before finalizing the assembly.","brand":"Pro Comp","offers":[{"title":"Default Title","offer_id":52663364583736,"sku":"PCE281.1488","price":546.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687529781.jpg?v=1784326269","url":"https:\/\/store.motormia.co\/products\/bare-aluminum-cylinder-head","provider":"MOTORMIA","version":"1.0","type":"link"}