{"product_id":"performer-rpm-cylinder-head-small-block-oldsmobile-flat-tappet","title":"Performer RPM Cylinder Head  Small-Block Oldsmobile  Flat Tappet","description":"The Edelbrock #61089 Performer RPM Bare cylinder head is a bolt-on performance upgrade for 2003-2008 Gen III HEMI Early 5.7L engines. It's designed to fit with the stock intake manifold, exhaust manifold, valve cover, rockers, spark plugs and accessories, as well as Hellcat components. this cylinder head have been machined to be used on either the driver or passenger side of the block. They are cast from A356 aluminum and heat treated to T6 specifications, machined and assembled at Edelbrock's facility in Torrance, California for guaranteed quality. The Edelbrock #61089 Performer RPM cylinder head features fully CNC machined combustion chambers along with CNC profiled bowls and port entries\/exits for improved air flow. They also feature more material in the deck and reinforced combustion chambers for increased cylinder pressures. The rocker bosses have been reinforced for improved stability and strength. Extra material has been added around the intake and exhaust ports to allow for porting in racing applications. Both the intake and exhaust port flanges have remained in the factory location for use with OEM components. The intake and exhaust valves have been tipped away from bore wall to unshroud the larger valves, while maintaining factory geometry. The seat diameters have also been increased for improved heat transfer and durability over stock. Match with an Edelbrock Victor EFI #7179 intake manifold for the ultimate in Edelbrock Gen III HEMI performance.\r\n\u003cb\u003eVehicle Specific\u003c\/b\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eChrysler:Gen III HEMI:345 (5.7L)\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\u003e00085347610891\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eCNC Ported: \u003c\/b\u003eNo\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eCamshaft Type: \u003c\/b\u003eHydraulic Roller\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eCombustion Chamber Volume: \u003c\/b\u003e83\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eConstruction Type: \u003c\/b\u003eBare\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eDeck Thickness: \u003c\/b\u003e0.625\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eEGR Port: \u003c\/b\u003eNo\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eExhaust Port Location: \u003c\/b\u003eEagle\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eExhaust Runner Volume: \u003c\/b\u003e75\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eFamily: \u003c\/b\u003ePerformer RPM\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eGrade Type: \u003c\/b\u003ePerformance\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\u003eHead Casting Number: \u003c\/b\u003eN\/A\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eIntake Runner Volume: \u003c\/b\u003e202\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\u003eSold Individually\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\u003eRetainer Included: \u003c\/b\u003eNo\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eSeat Angle: \u003c\/b\u003eExhaust 45 deg\/Intake 45\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eSeat Material: \u003c\/b\u003eDuctile Iron\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eSeries: \u003c\/b\u003ePerformer RPM\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eValve Angle: \u003c\/b\u003eExhaust 16.8 deg\/Intake 18.8\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eValve Included: \u003c\/b\u003eNo\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\u003eEPA Eligible\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\u003e1\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003ePackage UOM: \u003c\/b\u003eEA\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eDimension: \u003c\/b\u003e22.25 x 10.44 x 7.38 inches\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eWeight: \u003c\/b\u003e29.85 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":44336461414445,"sku":"BDVJ-61089","price":2657.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0646\/2780\/2157\/files\/061089_v1.jpg?v=1762922534","url":"https:\/\/montgomeryparts.com\/products\/performer-rpm-cylinder-head-small-block-oldsmobile-flat-tappet","provider":"Montgomery Parts","version":"1.0","type":"link"}