{"product_id":"platinum-plus-685-valve-spring-kit","title":"Platinum Plus .685\" Valve Spring Kit","description":"The Brian Tooley Racing Platinum Plus .685\" Valve Spring Kit is engineered for Gen III\/Gen IV LS and LT engines, providing critical valvetrain stability when using radical camshafts. This kit goes beyond the .660\" limit of standard kits, featuring a higher spring rate and lightweight titanium retainers.\n\nThis wear can occur with higher lift cams and increased spring pressures due to the nature of OEM scroll-type rocker arms. The BTR valve tip saver kit utilizes BTR valve locks and GM lash caps to mitigate this issue, preventing costly repairs.\n\nThis dual spring kit offers impressive specifications: 170 lbs of pressure at 1.800\" installed height, 380 lbs at 1.180\", and 450 lbs at 1.115\". The kit comes complete with titanium retainers, valve seals, locators, and locks, and is intended for use with factory valve guides.\n\nImportant installation notes: If existing wear is present on the rocker arm pad, replacement is necessary. Additionally, due to the use of lash caps, pushrod length must be verified to ensure proper lifter preload. This kit does NOT fit LS9 engines.","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52687290925368,"sku":"SK702\/0560\/BB","price":369.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/661174241.jpg?v=1784882310","url":"https:\/\/store.motormia.co\/products\/platinum-plus-685-valve-spring-kit","provider":"MOTORMIA","version":"1.0","type":"link"}