{"product_id":"edelbrock-single-perf-rpm-bbc-rect-port-head-bare","title":"Edelbrock Single Perf RPM BBC Rect Port Head Bare","description":"Cylinder Head Specifications: Combustion chamber volume: 118cc; Intake runner volume: 315cc; Exhaust runner volume: 110cc; Intake valve diameter: 2.19\"; Exhaust valve diameter: 1.88\"; Valve stem diameter: 11\/32\"; Valve guides: Manganese bronze; Deck thickness: 9\/16\"; Valve spring diameter: 1.55\"; Valve spring maximum lift: .700\"; Rocker stud: 7\/16\"; Guideplate: Hardened steel; Pushrod diameter: 3\/8\"; Valve angle: 26°; Exhaust port location: Stock; Spark plug fitment: 14mm x 3\/4 reach, gasket seat.  INSTALLATION NOTE: Bare heads will have valve guides \u0026amp; seats installed, but will require final sizing \u0026amp; 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. All Performer and Performer RPM Big-Block Chevy heads: Spark plug is closer to center of bore, will interfere with high-dome pistons for open chamber heads. Use pistons designed for our heads. Match with Edelbrock head gasket sets.","brand":"Edelbrock","offers":[{"title":"Default Title","offer_id":43835092238557,"sku":"EDE60549","price":780.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0590\/3758\/1491\/products\/12c4254c7d53327358c98b5e68eb9c8b.jpg?v=1683467058","url":"https:\/\/hellhoundperformance.store\/products\/edelbrock-single-perf-rpm-bbc-rect-port-head-bare","provider":"Hellhound Performance","version":"1.0","type":"link"}