{"product_id":"tsp-660-polished-dual-valve-spring-kit-with-pac-springs-titanium-retainers-and-two-piece-seats-and-seals","title":"TSP .660 Polished Dual Valve Spring Kit with PAC Springs, Titanium Retainers and Two-Piece Seats and Seals","description":"\u003cp\u003eTexas Speed \u0026amp; Performance .660-inch polished dual valve spring kit for GM LS cylinder heads that require separate spring seats and valve seals. This version is the correct choice for many aftermarket cylinder heads using bronze valve guides.\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\u003eSeparate 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 Verify valve-guide diameter and installed height before ordering. Factory valve locks are reused and are not included.\u003c\/p\u003e","brand":"Texas Speed \u0026 Performance","offers":[{"title":"Default Title","offer_id":54246085525823,"sku":"TSP-PACPOL660Kit-2Piece","price":347.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/smgspeed.com\/products\/tsp-660-polished-dual-valve-spring-kit-with-pac-springs-titanium-retainers-and-two-piece-seats-and-seals","provider":"SMGspeed","version":"1.0","type":"link"}