{"product_id":"e-street-bare-ls1-cylinder-heads","title":"E-Street Bare LS1 Cylinder Heads","description":"The Edelbrock E-Street Cylinder Heads for GM LS Cathedral Port 64cc Pair #77617 are designed for any high performance or stock replacement application and offers the best performance values for aftermarket GM LS Cathedral port heads. These bare cylinder heads are engineered with the same architecture as the factory head, and all stock components will fit without issue. Edelbrock E-Street LS Cathedral Port Cylinder Heads are manufactured with premium material and machined to the industry's tightest tolerances. They feature premium manganese bronze valve guides for long wear with particular emphasis placed on holding precision tolerances on valve seat concentricity. This allows the valves to seal securely to eliminate any leak down and increase cylinder pressures during engine operation. All Edelbrock cylinder heads feature patented Clean Cast Technology(TM) , a revolutionary process that eliminates casting flaws and promotes a smoother internal surface finish for greater air and coolant flow. These benefits provide more power and increased cooling ability right out of the box. A unique dual spark plug pocket design allows you to use both the factory style tapered seat spark plug or gasketed seat spark plugs that are available in wider heat ranges for maximum tunability.\r\n\u003cb\u003eVehicle Specific\u003c\/b\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eGM Cathedral Port LS (GEN III\/IV) LS1\/LS6\/LS2\/LQ4\/LQ9\/LM7\/LR4\/LM4\/L33\u003c\/li\u003e\r\n\r\n\u003c\/ul\u003e\r\n\u003ch3\u003eAttributes:\u003c\/h3\u003e\r\n\u003cp\u003e\u003c\/p\u003e\u003cul\u003e\r\n\u003cli\u003e\n\u003cb\u003eBrand Name: \u003c\/b\u003eEdelbrock\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eGTIN: \u003c\/b\u003e00085347776177\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eCNC Ported: \u003c\/b\u003eNo\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eCombustion Chamber Volume: \u003c\/b\u003e64\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eConstruction Type: \u003c\/b\u003eBare\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eExhaust Runner Volume: \u003c\/b\u003e75\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eExhaust Valve Diameter: \u003c\/b\u003e1.55\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eFamily: \u003c\/b\u003eE-Street\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eGuide Material: \u003c\/b\u003eManganese Bronze\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eGuide Plates Included: \u003c\/b\u003eNo\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eIntake Port Shape: \u003c\/b\u003eCathedral\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eIntake Runner Volume: \u003c\/b\u003e210\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eIntake Valve Diameter: \u003c\/b\u003e2\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eMaterial: \u003c\/b\u003eAluminum\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eQuantity: \u003c\/b\u003eSet of 2\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eRGL: \u003c\/b\u003eWARNING: This product can expose you to Lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov.\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eValve Angle: \u003c\/b\u003e15\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eValve Springs Included: \u003c\/b\u003eNo\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003ch3\u003eExtended Information:\u003c\/h3\u003e\r\n\u003cp\u003e\u003c\/p\u003e\u003cul\u003e\r\n\u003cli\u003e\n\u003cb\u003eCountry of Origin: \u003c\/b\u003eUS\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eEmissions : \u003c\/b\u003eRacing or Pre-Emissions Use Only\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003ch3\u003ePacking Information:\u003c\/h3\u003e\r\n\u003cp\u003e\u003c\/p\u003e\u003cul\u003e\r\n\u003cli\u003e\n\u003cb\u003eQuantity of Each: \u003c\/b\u003e2\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003ePackage UOM: \u003c\/b\u003ePR\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eDimension: \u003c\/b\u003e24.5 x 12 x 9 inches\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eWeight: \u003c\/b\u003e58.9 POUNDS\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cdiv id=\"sema-product-fitment\" class=\"product__accordion accordion fitment\"\u003e\u003c\/div\u003e","brand":"Edelbrock","offers":[{"title":"Default Title","offer_id":44336482582573,"sku":"BDVJ-77617","price":1968.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0646\/2780\/2157\/files\/077617_v1.jpg?v=1762923048","url":"https:\/\/montgomeryparts.com\/products\/e-street-bare-ls1-cylinder-heads","provider":"Montgomery Parts","version":"1.0","type":"link"}