{"product_id":"pro1-180cc-bare-aluminum-cylinder-head","title":"PRO1 180cc Bare Aluminum Cylinder Head","description":"The Dart PRO1 Aluminum Small Block Chevy Cylinder Head is engineered to be an excellent performance upgrade for a variety of applications, including street, strip, oval track, truck, and marine use. It is designed to maximize torque and throttle response from idle to 6,000 RPM, and is best suited for 327-400 cubic inch engines. These PRO1 heads utilize wet flow technology and are CNC ported for superior airflow, outperforming many larger heads in their class. The head is constructed from RMR cast aluminum alloy and features a 180cc intake port volume, a 72cc combustion chamber volume, 2.020\" intake valve diameter, and 1.600\" exhaust valve diameter. Standard features include long-wearing bronze valve guides, screw-in studs, multi-angle intake seats, and hardened, radiused exhaust seats. Assemblies include stainless steel valves, premium springs, locks, retainers, studs, guide plates, and seals. However, it is important to note that some parts may not be legal for use in California or other states with similar laws and regulations. This product is sold individually.","brand":"Dart PRO1","offers":[{"title":"Default Title","offer_id":52687608348984,"sku":"DRT11710040P","price":873.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/662653483.webp?v=1784885582","url":"https:\/\/store.motormia.co\/products\/pro1-180cc-bare-aluminum-cylinder-head","provider":"MOTORMIA","version":"1.0","type":"link"}