{"product_id":"w9y-msd-ede60985","title":"Edelbrock 60985 Performer Series RPM E-TEC 200 Cylinder Head Complete 350-500hp","description":"\u003cp\u003e.Cylinder Head Specifications: Combustion chamber vol: 64cc; Intake runner vol: 200cc; Exhaust runner vol: 80cc; Intake v. diameter: 2. 02\"; Exhaust v. diameter: 1. 60\"; V. stem diameter: 11\/32\"; V. guides: Manganese bronze; Deck thickness: 5\/8\"; V. spring diameter: 1. 46\"; V. spring maximum lift: . 575\"; Rocker stud: 3\/8\"; Guide plate: Hardened steel; Pushrod diameter: 5\/16\"; V. angle: 23°; Exh. port location: Stock; Spark plug fitment: 14mm x . 750 reach, gasket seat. Edelbrock E-Tec Cylinder Heads are replacements for 302, 327, 350 \u0026amp; 400 c. I. d. S\/B Chevy engines with \"Vortec-style\" manifolds. They feature an LT1-style raised runner intake port design for increased air-flow and ultimate performance. A unique combustion chamber design positions the spark plug closer to the center of the cylinder, promoting a more efficient combustion resulting in more power. These heads include an adjustable rocker stud and guide plate set-up for use with adjustable rockers or washers to properly position the stud height to accommodate factory style self-aligning rocker arms. They have 20% more exhaust flow than cast iron Vortec heads, great performance up to 6000 rpm and can produce 9. 5: 1 compression with stock pistons in 350 cubic-inch engines. RPM E-Tec cylinder heads are dual-drilled and will accept 1987-95 center bolt and\/or 1986 \u0026amp; prior perimeter flange mount valve covers and most stock exhaust manifolds. INSTALLATION NOTE: Bare heads will have valve guides and seats installed, but will require final sizing and a valve job to match the valves you will be using. Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3\/4\" reach with flat gasket seat. To use stock rockers on small-block Chevy heads, . 100\" longer than stock pushrods are required. Edelbrock pushrods #9629 are recommended. Use Head Bolt Kits for easy installation. S\/B Chevy heads may not be used on engines with less than 4\" bore (262, 265, 283, 305, 307 c. I. d. ) except with cams having less than . 450\" valve lift.\u003cbr\u003e\n.Complete Single For Hydraulic Roller\/Mechanical Flat Tappet\u003cbr\u003e\n.64cc Combustion Chamber Volume\u003cbr\u003e\n.200cc Intake\/80cc Exhaust Runner Volume\u003cbr\u003e\n.2. 02 in. Intake\/1. 6 in. Exhaust Valve Diameter\u003cbr\u003e\n.0. 562 in. Deck Thickness\u003c\/p\u003e","brand":"Motor State Distributing","offers":[{"title":"Default Title","offer_id":51020521046322,"sku":"W9Y-MSD-EDE60985","price":1060.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0711\/4748\/7538\/files\/61fkXzfDCkL.jpg?v=1774688711","url":"https:\/\/kartit.us\/products\/w9y-msd-ede60985","provider":"KARTiT","version":"1.0","type":"link"}