{"product_id":"cathedral-port-assembled-cylinder-heads","title":"Cathedral Port Assembled Cylinder Heads","description":"The LS EQ-CH364BA is a pair of fully assembled GM LS cylinder heads designed to replace casting numbers 243 and 799, commonly found on LS1 and LS6 engines. This attention to construction ensures durability and longevity for both OEM and slightly modified engine applications.\n\nThese assembled heads come complete with 100% new OE-type valves, seals, valve springs, and retainers, utilizing stock components for compatibility with beehive springs. The internal design features \"swimming-pool\" shaped combustion chambers, a 69cc volume per cylinder, and Cathedral Port styling, all contributing to a superior port finish for increased airflow. Furthermore, the water flow has been redesigned for greater thermal conductivity, and the heads are equipped with hardened exhaust seats and CNC-machined guides and seats.\n\nEach EQ cylinder head undergoes a rigorous 25-point quality check to ensure it meets high standards. The \"3-angle\" valve finish is standard, contributing to improved performance. These heads are specifically designed for Chevrolet V8 engines from 2001-2014, with compatibility for 5.3L, 6.0L, and 6.2L displacements.\n\nEngineQuest aims to provide performance that outperforms competitors, offering these heads at a competitive price point. The 243\/799 casting numbers indicate their origin and compatibility with specific LS engine platforms.","brand":"GM","offers":[{"title":"Default Title","offer_id":52662822666552,"sku":"EQ-CH364BA","price":701.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687500373.jpg?v=1784321453","url":"https:\/\/store.motormia.co\/products\/cathedral-port-assembled-cylinder-heads","provider":"MOTORMIA","version":"1.0","type":"link"}