{"product_id":"afr-ls-series-ls3-mongoose-cylinder-heads-260cc-69cc-1840","title":"AFR GM LS-Series LS3 Mongoose Cylinder Heads, 260cc Intake \/ 69cc Chamber, Angle Plug, Assembled | 1840","description":"AFR's LS3 Mongoose cylinder heads are fully assembled, aluminum GM LS-Series heads built with 260cc intake runners and 69cc combustion chambers. They use an angle-plug design and ship as a matched pair ready to bolt on.\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eType: LS3 Mongoose\u003c\/li\u003e\n\u003cli\u003eCondition: Assembled\u003c\/li\u003e\n\u003cli\u003eIntake Valve: 2.165 in\u003c\/li\u003e\n\u003cli\u003eExhaust Valve: 1.600 in\u003c\/li\u003e\n\u003cli\u003eIntake Runner Volume: 260 cc\u003c\/li\u003e\n\u003cli\u003eCombustion Chamber Volume: 69 cc\u003c\/li\u003e\n\u003cli\u003eSpring Diameter: 1.270 in\u003c\/li\u003e\n\u003cli\u003eSpark Plug Style: Angle Plug\u003c\/li\u003e\n\u003cli\u003eMaterial: Aluminum\u003c\/li\u003e\n\u003cli\u003eQuantity: Pair\u003c\/li\u003e\n\u003cli\u003ePart Number: 1840\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGM LS-Series\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWhat engine platform does this cylinder head fit?\u003c\/h5\u003e\u003cp\u003eIt's built for the GM LS-Series platform.\u003c\/p\u003e\u003ch5\u003eIs this head assembled or bare?\u003c\/h5\u003e\u003cp\u003eIt ships fully assembled, ready to install.\u003c\/p\u003e\u003ch5\u003eWhat size are the intake and exhaust valves?\u003c\/h5\u003e\u003cp\u003e2.165 in intake and 1.600 in exhaust valves.\u003c\/p\u003e\u003ch5\u003eWhat spark plug style does it use?\u003c\/h5\u003e\u003cp\u003eAn angle-plug design.\u003c\/p\u003e\u003ch5\u003eHow many heads come in this listing?\u003c\/h5\u003e\u003cp\u003eIt's sold as a matched pair.\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What engine platform does this cylinder head fit?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It's built for the GM LS-Series platform.\"}},{\"@type\":\"Question\",\"name\":\"Is this head assembled or bare?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It ships fully assembled, ready to install.\"}},{\"@type\":\"Question\",\"name\":\"What size are the intake and exhaust valves?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"2.165 in intake and 1.600 in exhaust valves.\"}},{\"@type\":\"Question\",\"name\":\"What spark plug style does it use?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"An angle-plug design.\"}},{\"@type\":\"Question\",\"name\":\"How many heads come in this listing?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It's sold as a matched pair.\"}}]}\u003c\/script\u003e","brand":"Air FLow Research","offers":[{"title":"Default Title","offer_id":41422101708848,"sku":"GBMK_1840","price":3188.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/AFR1840.jpg?v=1714680367","url":"https:\/\/berryperformancesales.com\/products\/afr-ls-series-ls3-mongoose-cylinder-heads-260cc-69cc-1840","provider":"Berry Performance Sales","version":"1.0","type":"link"}