{"product_id":"tsp-660-polished-dual-valve-spring-kit-with-pac-springs-titanium-retainers-and-prc-integrated-seat-seals","title":"TSP .660 Polished Dual Valve Spring Kit with PAC Springs, Titanium Retainers and PRC Integrated Seat\/Seals","description":"\u003cp\u003eTexas Speed \u0026amp; Performance .660-inch polished dual valve spring kit for compatible GM LS cylinder heads with factory-size valve guides. The integrated PRC seat and seal simplifies installation while the polished PAC dual springs provide stable valvetrain control for aggressive hydraulic roller camshafts.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of 16 polished PAC dual valve springs\u003c\/li\u003e\n\u003cli\u003eTitanium retainers\u003c\/li\u003e\n\u003cli\u003ePRC integrated spring seats and valve seals\u003c\/li\u003e\n\u003cli\u003e160 lb closed pressure at 1.810-inch installed height\u003c\/li\u003e\n\u003cli\u003e415 lb open pressure at .660-inch lift\u003c\/li\u003e\n\u003cli\u003e.660-inch recommended maximum lift\u003c\/li\u003e\n\u003cli\u003e1.015-inch coil bind height\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFitment note:\u003c\/strong\u003e Designed for compatible LS applications using factory-size valve guides. Not for LS7, LS9, Gen V LT engines, or most aftermarket heads with bronze valve guides. Factory valve locks are reused and are not included.\u003c\/p\u003e","brand":"Texas Speed \u0026 Performance","offers":[{"title":"Default Title","offer_id":54246083723583,"sku":"TSP-PACPOL660SPRINGKIT","price":359.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/smgspeed.com\/products\/tsp-660-polished-dual-valve-spring-kit-with-pac-springs-titanium-retainers-and-prc-integrated-seat-seals","provider":"SMGspeed","version":"1.0","type":"link"}