{"product_id":"track-heat-valve-spring-upgrade-kit","title":"Track Heat Valve Spring Upgrade Kit","description":"The Trick Flow Specialties TFS-2500200 Valve Spring Upgrade Kit is engineered to enhance the performance of Ford 289-351W engines equipped with standard Twisted Wedge cylinder heads, bringing them up to Track Heat cylinder head specifications.\n\nThis comprehensive kit includes dual valve springs with a spring rate of 452 lbs.\/in. and an outside diameter of 1.460 inches. It also features retainers and locks made from durable steel, a 10-degree lock style, and single-groove locks. The kit comes complete with valve stem seals and valve spring shims.\n\nKey specifications for this upgrade kit include an installed height of 1.800 inches with a seat pressure of 134 lbs., and an open height of 1.200 inches with an open pressure of 405 lbs. The coil bind height is 1.013 inches. The springs are designed to support valve lift up to .600 inches and are not coated. The valve stem diameter is compatible with 0.341 inch (8.66mm) stems.\n\nIt is compatible with Ford 289, 302, and 351W engines, specifically for applications requiring upgraded valvetrain components for standard Twisted Wedge street heads.","brand":"Trick Flow","offers":[{"title":"Default Title","offer_id":52689427595576,"sku":"TFS-2500200","price":264.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687749435.jpg?v=1784906526","url":"https:\/\/store.motormia.co\/products\/track-heat-valve-spring-upgrade-kit","provider":"MOTORMIA","version":"1.0","type":"link"}