{"product_id":"dart-pro2-cnc-aluminum-big-block-chevy-cylinder-heads","title":"Dart Pro2 CNC Aluminum Big Block Chevy Cylinder Heads","description":"Maximum performance, bracket racing, heads up and super classes. Over 7,500 RPM, 500+ cubic inches, a great head for maximum effort comp or bracket cars. Dart's PRO2 24 Deg 380cc CNC heads have been revised with larger 2.350 in. intake valves and a revised port design for improved airflow and a substantial horsepower increase! These cylinder heads were designed to make competitive engine building easier and less expensive by incorporating the rugged features of our famous Race Series casting into a ready to use, professional quality competition cylinder head. Every intake port, every exhaust runner, every valve bowl, and every combustion chamber is 100% digitally CNC machined for the ultimate in consistency. Assemblies include Stainless Steel valves, premium springs, locks, retainers, guide plates and seals.","brand":"Dart","offers":[{"title":"Default Title","offer_id":67609158254760,"sku":"BGWK_19674030","price":2782.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0402\/2344\/1064\/files\/CNC_PRO2_380cc-Head-ANG135_89bc0622-cd5d-4d26-97af-f89c4950f265.jpg?v=1791235497","url":"https:\/\/www.truspeedperformance.com\/products\/dart-pro2-cnc-aluminum-big-block-chevy-cylinder-heads","provider":"TruSpeed Performance LLC","version":"1.0","type":"link"}