{"product_id":"performer-rpm-aluminum-cylinder-head","title":"Performer RPM Aluminum Cylinder Head","description":"The Edelbrock #60735 Performer RPM cylinder head is a performance-oriented aluminum cylinder head engineered for 1955-86 Small-Block Chevy applications. It is perfectly suited for street performance, daily drivers, street rods, and muscle cars that require a significant upgrade in power and throttle response.\n\nKey specifications include a 2.02-inch intake valve diameter, a 1.60-inch exhaust valve diameter, 195 cc intake runner volume, and a 70 cc combustion chamber.\n\nInstallation considerations include the recommendation for .100\" longer than stock pushrods when using stock rockers, with Edelbrock pushrods #9629 being specifically recommended. Head Bolt Kits are advised for straightforward installation. The recommended spark plugs are Champion RC12YC or equivalent, requiring a 14mm x 3\/4\" reach with a flat gasket seat.\n\nImportant fitment notes: S\/B Chevy heads may not be used on engines with less than a 4-inch bore (specifically 262, 265, 283, 305, and 307 c.i.d.) unless paired with camshafts having less than .450\" valve lift. This product is for use on pre-pollution controlled vehicles only.","brand":"Edelbrock","offers":[{"title":"Default Title","offer_id":52687923708216,"sku":"EDE60735","price":1075.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/664195671.webp?v=1784887529","url":"https:\/\/store.motormia.co\/products\/performer-rpm-aluminum-cylinder-head","provider":"MOTORMIA","version":"1.0","type":"link"}