{"product_id":"afr1840","title":"AFR 12 LS3 Head 260cc. fully CNC ported. 69cc chambers. 6 BOLT. Assembled","description":"\u003cp\u003eAFR1840\u003c\/p\u003e\n\u003cp\u003eAFR’s 260cc LS3 “Mongoose” heads feature 100% CNC ported intake, exhaust and chambers using our advanced engineering and flow techniques to produce the ultimate Rectangle Port head available today. Featuring A356 aluminum castings, titanium retainers and the highest quality components, throughout. They’re designed for 4.000 or larger bore applications up to 454 CI, operating up to 7000 RPM. This product is street legal in 50 states from 2007 to 2016 emission controlled vehicles with a General Motors 6.2L LS engine. AFR heads are available bare (without parts), call our tech line for details.\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.airflowresearch.com\/260cc-ls3-cylinder-head\/#faq\" class=\"prodlink\"\u003ePlease see footnotes for additional information.\u003c\/a\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"descrip\" colspan=\"2\"\u003e\u003cstrong\u003eSpecifications \u0026amp; Features:\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pib\"\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv align=\"right\"\u003eA356 Aluminum\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pib\"\u003e\n\u003ctd\u003eIntake Port Volume\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv align=\"right\"\u003e260cc\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pib\"\u003e\n\u003ctd\u003eIntake Port Dimension\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv align=\"right\"\u003e2.610\"H x 1.300\"W x 7\/16° Radius\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pib\"\u003e\n\u003ctd\u003eIntake Port Location\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv align=\"right\"\u003eStock\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pib\"\u003e\n\u003ctd\u003eExhaust Port Volume\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv align=\"right\"\u003e95cc\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pib\"\u003e\n\u003ctd\u003eExhaust Port Dimension\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv align=\"right\"\u003e1.540\" H x 1.760\" W\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pib\"\u003e\n\u003ctd\u003eExhaust Port Location\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv align=\"right\"\u003eStock\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pib\"\u003e\n\u003ctd\u003eCombustion Chamber Size\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv align=\"right\"\u003e69cc\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pib\"\u003e\n\u003ctd\u003eValve Cover Bolt Pattern\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv align=\"right\"\u003eCenter Bolt\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pib\"\u003e\n\u003ctd\u003eValve Angle\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv align=\"right\"\u003e12°\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pib\"\u003e\n\u003ctd\u003eValve Spring Pocket Diameter\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv align=\"right\"\u003e1.490\" O.D\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pib\"\u003e\n\u003ctd\u003eMax Valve Spring Pocket Machining\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv align=\"right\"\u003e1.510\" O.D\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pib\"\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cstrong\u003eWarning:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDo not machine spring pad any deeper.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pib\"\u003e\n\u003ctd\u003eDeck Thickness\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv align=\"right\"\u003e.750\"\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pib\"\u003e\n\u003ctd\u003eMinimum Bore Diameter\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv align=\"right\"\u003e4.000\"\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pib\"\u003e\n\u003ctd\u003eFlat Mill - 65cc chamber\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv align=\"right\"\u003e.006\" per cc 62cc Maximum\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pib\"\u003e\n\u003ctd\u003eMinimum Cross Sectional Area\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv align=\"right\"\u003e2.875 sq. in.\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pib\"\u003e\n\u003ctd\u003eSpark Plug Dimensions\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv align=\"right\"\u003e14mm x .750\" w\/ Tapered or Gasket Seat\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pib\"\u003e\n\u003ctd\u003eCarb EO#\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv align=\"right\"\u003eD-250-5\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Air Flow Research","offers":[{"title":"Default Title","offer_id":40133123211377,"sku":"AFR1840","price":4747.59,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1088\/6742\/files\/LS3_edit__63978.1528752078.500.290.png?v=1683917076","url":"https:\/\/www.parkautomotorsports.ca\/products\/afr1840","provider":"Park Auto Motorsports","version":"1.0","type":"link"}