{"product_id":"dart-iron-eagle-s-s-small-block-chevy-cylinder-heads-12","title":"Dart 10021070S Iron Eagle S\/S Small Block Chevy Cylinder Heads","description":"strip performance, towing upgrade with mildly modified engines from idle to 5,500 RPM. Best for 305-383 cubic inch engines. Dart Iron Eagle S\/S 23 Deg 170cc late model and Vortec style heads produce great throttle response and low to mid-range torque for street performance engines. Our precision cast ports and chambers produce outstanding air flow without time consuming porting. Dart S\/S heads are legal in many racing sanctions with Iron head rules. Assemblies include Stainless Steel valves, premium springs, locks, retainers and seals. Heads are sold individually","brand":"Dart","offers":[{"title":"Default Title","offer_id":51201833697595,"sku":"BGWK_10021070S","price":949.09,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0955\/5958\/2011\/files\/SBC_IRN_170-Head-ANG225_2d4e7534-822e-42c8-8de2-9715074a1dd2.jpg?v=1777379312","url":"https:\/\/performancepartscanada.ca\/products\/dart-iron-eagle-s-s-small-block-chevy-cylinder-heads-12","provider":"Performance Parts Canada","version":"1.0","type":"link"}