{"product_id":"edl-60459","title":"RPM BIG-BLOCK CHEVY OVAL PORT CYLINDER HEAD HYDRAULIC FLAT TAPPET CAM","description":"\u003cp\u003e\u003cstrong\u003eBrand New Edelbrock Performer RPM for Big Block Chevy with Oval Port Cylinder Head \u0026amp; Hydraulic Flat Tappet Camshaft, 9.5:1 Compression (Part #60459).\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Edelbrock #60459 Performer RPM O-Port cylinder head is designed for Big-Block Chevy applications. The Edelbrock #60459 Performer RPM head is perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed. This cylinder head delivers great throttle response and power from 1500 to 6500 rpm. They also feature the highest quality intake and exhaust valves and valve springs. For use on pre-pollution controlled vehicles only.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eInstallation Notes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEquipped with springs for use in hydraulic flat tappet camshaft applications\u003c\/li\u003e\n\u003cli\u003eMatch with Edelbrock head gasket sets\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThese oval port heads will support over 540 hp with 9.5:1 compression when used as part of the Total Power Package\u003c\/li\u003e\n\u003cli\u003eUnique oval intake port shape produces flow similar to rectangular ports, but the smaller port size provides excellent seat-of-the-pants performance and crisp throttle response\u003c\/li\u003e\n\u003cli\u003eSemi-open chamber design maximizes efficiency with street-able compression ratios\u003c\/li\u003e\n\u003cli\u003eSmaller-than-stock 11\/32\" valve stems promote excellent flow and lighter valve weight\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e Performer RPM\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHorsepower:\u003c\/strong\u003e 500-600 HP\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeat Angle:\u003c\/strong\u003e Exhaust 45 deg\/Intake 45 deg\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended spark plugs:\u003c\/strong\u003e Champion RC12YC or equivalent 14mm x 3\/4\" reach with flat gasket seat.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake Valve Diameter:\u003c\/strong\u003e 2.19 in\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake Runner Volume:\u003c\/strong\u003e 290 cc\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePush Rod Diameter:\u003c\/strong\u003e 0.4375 in\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRocker Stud Diameter:\u003c\/strong\u003e 0.4375 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Angle:\u003c\/strong\u003e 26 Degree\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Spring Diameter:\u003c\/strong\u003e 1.50 in\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Spring Maximum Lift:\u003c\/strong\u003e 0.700 in\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Stem Diameter:\u003c\/strong\u003e 0.3438 in\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eYou can view and download the complete assembly instruction booklet \u003ca style=\"color: red;\" href=\"https:\/\/southwestspeed.com\/cdn\/shop\/files\/EDL_60459Instructions.pdf\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e","brand":"EDL 60459","offers":[{"title":"Default Title","offer_id":50395485339929,"sku":"EDL 60459","price":1295.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/0477\/6985\/files\/EDL_60459b.jpg?v=1749761170","url":"https:\/\/southwestspeed.com\/products\/edl-60459","provider":"Southwest Speed","version":"1.0","type":"link"}