{"product_id":"660-dual-valve-spring-kit-with-titanium-retainers-2","title":".660\" Dual Valve Spring Kit with Titanium Retainers","description":"The TSP .660\" Dual Valve Spring Kit from Texas Speed \u0026amp; Performance is engineered to provide superior valvetrain control for high-performance LS engines. This kit features American-Made PAC Racing polished dual valve springs, renowned for their durability and extended life due to the polishing process that minimizes fatigue and failure without sacrificing pressure.\n\nKey components include titanium retainers for reduced weight and improved durability, along with a patent-pending Precision Race Components integrated seat and seal. This innovative design eliminates the need for separate installation tools for valve seals and prevents common installation issues like tearing or seals popping off.\n\nThis dual valve spring kit is rated to handle up to .660\" of lift, making it suitable for more aggressive hydraulic roller camshafts. Spring specifications include an install height of 1.810\", 160 lb. of closed spring pressure at 1.810\", and 415 lb. of open spring pressure at .660\" lift. The coil bind height is 1.015\". The kit utilizes GM factory valve stem locks, which are not included.\n\nImportant compatibility notes: This kit will not work on LS7, LS9, any Gen 5 LT1\/4 engine applications. It is also not compatible with most aftermarket cylinder heads that feature bronze guides. The integrated seat and seal are designed exclusively for factory-size valve guides and cannot be used on aftermarket bronze guide applications.","brand":"TSP","offers":[{"title":"Default Title","offer_id":52689455055160,"sku":"TSP-PACPOL660SPRINGKIT","price":347.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687740669.jpg?v=1784906713","url":"https:\/\/store.motormia.co\/products\/660-dual-valve-spring-kit-with-titanium-retainers-2","provider":"MOTORMIA","version":"1.0","type":"link"}