{"product_id":"dart-13072143-pro1-chevrolet-big-block-head-225-00-cc-port-62-00-cc-chamber","title":"Dart 13072143 - Pro1 Chevrolet Big Block Head - 225.00 CC Port, 62.00 CC Chamber","description":"\u003cp\u003eDart 13072143 - Pro1 Chevrolet Big Block Head - 225.00 CC Port, 62.00 CC Chamber\u003c\/p\u003e\u003cp\u003eDart Pro1 CNC Aluminum Big Block Chevy Cylinder Heads\u003c\/p\u003e\u003cp\u003eSerious street performance, mild bracket racing and oval track. Maximum torque and throttle response from 3,500 to 7,800 RPM. Best for 363-427 cubic inch engines. Works with most standard components. Every intake port, exhaust runner, valve bowl, and every combustion chamber is 100% CNC machined on special dedicated PRO1 castings. These heads are ideal for high compression, big cubic inch small blocks and are great for supercharged applications. Exhaust runners are raised .135 in. for improved flow. Manganese Bronze valve guides are used for long life, and hardened valve seats provide durability with unleaded fuels. Features 3.000 in. exhaust bolt pattern. Assemblies include Stainless Steel valves, premium springs, locks, retainers, studs, guide plates and seals.\u003c\/p\u003e\u003cul\u003e\u003cli\u003eHeads are sold individually\u003c\/li\u003e\u003c\/ul\u003e\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eIndustry\u003c\/strong\u003e: \u003cspan\u003eAutomotive\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCNC Ported\u003c\/strong\u003e: \u003cspan\u003eYes\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCombustion Chamber Volume\u003c\/strong\u003e: \u003cspan\u003e62.00\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eExhaust Valve Diameter\u003c\/strong\u003e: \u003cspan\u003e1.600\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eIntake Valve Diameter\u003c\/strong\u003e: \u003cspan\u003e2.080\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: \u003cspan\u003eRMR Cast Aluminum Alloy\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePort Volume\u003c\/strong\u003e: \u003cspan\u003e225.00\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eValve Angle\u003c\/strong\u003e: \u003cspan\u003e20\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eValve Spring Diameter\u003c\/strong\u003e: \u003cspan\u003e1.550\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eValve Spring Maximum Lift\u003c\/strong\u003e: \u003cspan\u003e0.700\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eEngine Type\u003c\/strong\u003e: \u003cspan\u003eICE\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eValve Spring Type\u003c\/strong\u003e: \u003cspan\u003eDouble\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eProduct Type\u003c\/strong\u003e: \u003cspan\u003eEngine Cylinder Head\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMake\u003c\/strong\u003e: \u003cspan\u003eChevrolet\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eEngine\u003c\/strong\u003e: \u003cspan\u003eBig Block\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMake - Web\u003c\/strong\u003e: \u003cspan\u003eChevrolet\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eEngine - Web\u003c\/strong\u003e: \u003cspan\u003eBig Block\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCylinder Head Series\u003c\/strong\u003e: \u003cspan\u003ePro1\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eTitle - Web\u003c\/strong\u003e: \u003cspan\u003ePro1 Chevrolet Big Block Head - 225.00 CC Port, 62.00 CC Chamber\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCategory Hierarchy\u003c\/strong\u003e: \u003cspan\u003eHeads\u0026gt;Big Block Chevy\u0026gt;Pro1\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCylinder Head Material\u003c\/strong\u003e: \u003cspan\u003eRMR Cast Aluminum Alloy\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eIntake Runner Volume\u003c\/strong\u003e: \u003cspan\u003e225.00\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eEBAY Category ID\u003c\/strong\u003e: \u003cspan\u003e33617\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Dart","offers":[{"title":"Default Title","offer_id":50515714965782,"sku":"BGWK-13072143","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0930\/0878\/9782\/files\/0_13072143-ang135_normalized.jpg?v=1777017791","url":"https:\/\/www.cspracing.com\/products\/dart-13072143-pro1-chevrolet-big-block-head-225-00-cc-port-62-00-cc-chamber","provider":"Complete Street Performance","version":"1.0","type":"link"}