{"product_id":"afr-12-ls3-head-260cc-fully-cnc-ported-69cc-chambers-6-bolt","title":"AFR 12° LS3 Head 260cc, Fully CNC Ported, 69cc Chambers, 6 BOLT","description":"\u003ch2\u003e\u003cspan\u003e\u003cstrong\u003eAFR 12° LS3 Head 260cc, Fully CNC Ported, 69cc Chambers, 6 BOLT\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe AFR 260cc LS3 \"Mongoose\" Cylinder Head is the ultimate upgrade for high-performance LS3 engines. Designed for applications with 4.000\" or larger bore sizes up to 454 CI, this fully CNC ported head enhances airflow and increases engine efficiency. Perfect for street and track use, it features advanced engineering and flow techniques that ensure maximum power and reliability, operating up to 7000 RPM. The head is compatible with 2007-2016 emission-controlled vehicles using General Motors' 6.2L LS engine and is street legal in all 50 states.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003ePiston Specifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003ePiston Top: 100% CNC Ported Combustion Chambers\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eApproximate Compression Ratios:\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eVaries based on bore and other engine specs\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEngine Compatibility: General Motors 6.2L LS engine (2007-2016 emission controlled vehicles)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEngine Sizes Supported: 4.000\" or larger bore up to 454 CI\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eTechnical Details\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eMaterial: A356 Aluminum\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIntake Port Volume: 260cc\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIntake Port Dimension: 2.610\" H x 1.300\" W x 7\/16° Radius\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eExhaust Port Volume: 95cc\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eExhaust Port Dimension: 1.540\" H x 1.760\" W\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCombustion Chamber Size: 69cc\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDeck Thickness: .750\"\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMinimum Bore Diameter: 4.000\"\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSpark Plug Dimensions: 14mm x .750\" with Tapered or Gasket Seat\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003ePerformance \u0026amp; Compatibility\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe AFR 260cc LS3 \"Mongoose\" heads feature 100% CNC ported intake, exhaust, and combustion chambers for optimum airflow, providing significant power gains. With a competition 5-angle valve job and high-quality components like titanium retainers and PAC Racing Springs, these heads are built for high performance and durability. Perfect for both street and race applications, they ensure your engine performs at its peak up to 7000 RPM.\u003c\/span\u003e\u003c\/p\u003e","brand":"Dynamic Raceworks","offers":[{"title":"Default Title","offer_id":51582965317946,"sku":"#DRW-AFR-1840","price":3490.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8647\/8650\/files\/26022.png?v=1752272207","url":"https:\/\/dynamicraceworks.com\/products\/afr-12-ls3-head-260cc-fully-cnc-ported-69cc-chambers-6-bolt","provider":"Dynamic Raceworks","version":"1.0","type":"link"}