{"product_id":"camshafts-and-valvetrain-valves-core-xtreme-duty-exhaust-valves-chevy-pro-x-ls3x-head-1600","title":"CORE XTREME DUTY EXHAUST VALVES CHEVY PRO-X, LS3X HEAD 1.600\"","description":"\u003ch2\u003eCORE Performance XTREME DUTY EXHAUST VALVES CHEVY PRO-X, LS3X HEAD 1.600\" Product Description:\u003c\/h2\u003e\n\u003cdiv class=\"seocart_Accordion\"\u003e\n\u003ch3 class=\"seocart_Accordion_heading0\"\u003eOverview\u003c\/h3\u003e\n\u003cdiv class=\"seocart_Accordion_content0\"\u003e\n\u003cp style=\"color: #353535;\"\u003e\u003cspan style=\"color: #000000;\"\u003eThese CORE Xtreme Duty exhaust valves are manufactured by Manley Performance Products to CORE exact specifications right here in the USA. They are designed for CORE Motorsports \u003cstrong\u003ePro-X\u003c\/strong\u003e and \u003cstrong\u003eLS3X\u003c\/strong\u003e series cylinder heads and are constructed of XH-432 exotic stainless steel.\u003c\/span\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #000000;\"\u003eManley Performance is indisputably a leading manufacturer of performance and racing components in the world. The reason for Manley's overwhelming success is simple: Quality. Manley offers the best materials in the industry exclusive materials that other manufacturers do not possess.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSold as a set of 8.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr style=\"color: #222222; text-align: left;\"\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"seocart_Accordion_heading1\"\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"seocart_Accordion_content1\"\u003e\n\u003ctable height=\"221\" style=\"width: 456px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"width: 233.594px; height: 19px; text-align: right;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #000000;\"\u003eBrand:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 9.125px; height: 19px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 191.281px; height: 19px; text-align: left;\"\u003e\u003cspan style=\"color: #800000;\"\u003eCORE\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px; text-align: left;\"\u003e\n\u003ctd style=\"width: 233.594px; height: 19px; text-align: right;\"\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003ePart Numbers:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 9.125px; height: 19px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 191.281px; height: 19px; text-align: left;\"\u003eCORE-MAN-11275-8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px; text-align: left;\"\u003e\n\u003ctd style=\"width: 233.594px; height: 19px; text-align: right;\"\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003eOther Part Number:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 9.125px; height: 19px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 191.281px; height: 19px; text-align: left;\"\u003e11275-8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px; text-align: left;\"\u003e\n\u003ctd style=\"width: 233.594px; height: 19px; text-align: right;\"\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003ePart Type:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 9.125px; height: 19px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 191.281px; height: 19px; text-align: left;\"\u003e\n\u003ca href=\"\/engine-internal\/pistons-rings-and-rods-1.html\"\u003e\u003c\/a\u003e\u003ca href=\"\/cylinder-heads\/valves-1.html\"\u003e\u003cspan style=\"color: #800000;\"\u003eValves\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/engine-internal\/pistons-rings-and-rods-1.html\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px; text-align: left;\"\u003e\n\u003ctd style=\"width: 233.594px; height: 19px; text-align: right;\"\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003eValve Type:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 9.125px; height: 19px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 191.281px; height: 19px;\"\u003e\u003cspan style=\"color: #000000;\"\u003eExhaust\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px; text-align: left;\"\u003e\n\u003ctd style=\"width: 233.594px; height: 19px; text-align: right;\"\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003eHead Diameter (in):\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 9.125px; height: 19px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 191.281px; height: 19px;\"\u003e\u003cspan style=\"color: #000000;\"\u003e1.600\"\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px; text-align: left;\"\u003e\n\u003ctd style=\"width: 233.594px; height: 19px; text-align: right;\"\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003eStem \u003cspan\u003eDiameter\u003c\/span\u003e (in):\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 9.125px; height: 19px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 191.281px; height: 19px;\"\u003e\u003cspan style=\"color: #000000;\"\u003e.3136\"\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px; text-align: left;\"\u003e\n\u003ctd style=\"width: 233.594px; height: 19px; text-align: right;\"\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003eInstalled Height:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 9.125px; height: 19px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 191.281px; height: 19px;\"\u003e1.850\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px; text-align: left;\"\u003e\n\u003ctd style=\"width: 233.594px; height: 19px; text-align: right;\"\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003eO\/A Length (in):\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 9.125px; height: 19px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 191.281px; height: 19px;\"\u003e5.453\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px; text-align: left;\"\u003e\n\u003ctd style=\"width: 233.594px; height: 19px; text-align: right;\"\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003eTip \u003cspan\u003eLength (in)\u003c\/span\u003e:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 9.125px; height: 19px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 191.281px; height: 19px;\"\u003e\u003cspan style=\"color: #000000;\"\u003e.290\"\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px; text-align: left;\"\u003e\n\u003ctd style=\"width: 233.594px; height: 19px; text-align: right;\"\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #111111;\"\u003eUnderhead Angle\/Radius (deg\/in):\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 9.125px; height: 19px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 191.281px; height: 19px;\"\u003e25° x 7\/16\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px; text-align: left;\"\u003e\n\u003ctd style=\"width: 233.594px; height: 19px; text-align: right;\"\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #111111;\"\u003eMargin (in):\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 9.125px; height: 19px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 191.281px; height: 19px;\"\u003e.065\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px; text-align: left;\"\u003e\n\u003ctd style=\"width: 233.594px; height: 19px; text-align: right;\"\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #111111;\"\u003eSeat Width (in):\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 9.125px; height: 19px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 191.281px; height: 19px;\"\u003e.100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px; text-align: left;\"\u003e\n\u003ctd style=\"width: 233.594px; height: 19px; text-align: right;\"\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #111111;\"\u003eTop of Head (deg):\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 9.125px; height: 19px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 191.281px; height: 19px;\"\u003e18° dish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 233.594px; text-align: right;\"\u003e\n\u003cstrong style=\"background-color: #f9f9f9;\"\u003e\u003cspan style=\"color: #111111;\"\u003e\u003cspan color=\"#111111\" style=\"color: #111111;\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eValve Material:\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #111111;\"\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 9.125px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 191.281px;\"\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cspan\u003e\u003cspan style=\"color: #111111; background-color: #f9f9f9; text-align: left;\"\u003eXH-432 Exotic stainless steel\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px; text-align: left;\"\u003e\n\u003ctd style=\"width: 233.594px; height: 19px; text-align: right;\"\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #111111;\"\u003e\u003cspan color=\"#111111\" style=\"color: #111111;\"\u003eValve Weight (Gms):\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 9.125px; height: 19px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 191.281px; height: 19px;\"\u003e102gms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px; text-align: left;\"\u003e\n\u003ctd style=\"width: 233.594px; height: 19px; text-align: right;\"\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #111111;\"\u003e\u003cspan\u003eQuantity:\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 9.125px; height: 19px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 191.281px; height: 19px;\"\u003e\u003cspan style=\"color: #000000;\"\u003eSold as a set of 8.\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 22px; text-align: left;\"\u003e\n\u003ctd style=\"width: 233.594px; height: 22px; text-align: right;\"\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003eIn Store Pickup:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 9.125px; height: 22px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 191.281px; height: 22px;\"\u003e\u003cspan style=\"color: #000000;\"\u003eColton, CA, USA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"seocart_Accordion_heading2\"\u003eApplication\u003c\/h3\u003e\n\u003cdiv class=\"seocart_Accordion_content2\"\u003e\n\u003cp\u003e\u003cspan style=\"color: #000000;\"\u003ePro-X and LS3X cylinder heads.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"seocart_Accordion_heading4\"\u003eWarranty\u003c\/h3\u003e\n\u003cdiv class=\"seocart_Accordion_content4\"\u003e\n\u003cp\u003eThis product, due to it`s intended use, is sold without warranty.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"CORE Performance","offers":[{"title":"Default Title","offer_id":43739182727265,"sku":"CORE-MAN-11275-8","price":599.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0615\/5157\/5137\/files\/zCBM-MAN-11275-8-zexhaust-1_ddc880bc-8dd8-460e-9c6e-038331b2820e.jpg?v=1772836416","url":"https:\/\/www.coreperformanceinc.com\/products\/camshafts-and-valvetrain-valves-core-xtreme-duty-exhaust-valves-chevy-pro-x-ls3x-head-1600","provider":"Core Performance Inc","version":"1.0","type":"link"}