{"product_id":"pac-1300-series-dual-valve-springs-1-522-o-d-set-of-16-400-1252lbs-2-250-950-lift-1-190-coil-bind","title":"PAC 1300 Series Dual Valve Springs, 1.522\" O.D, Set of 16 - PAC-1360-16","description":"\u003cp\u003eDUAL VALVE SPRINGS, 1.522\" OD\u003c\/p\u003e\u003cp\u003e400-1252lbs @ 2.250\", .950\" Lift, 1.190\" Coil Bind\u003c\/p\u003e\u003cp\u003e\u003cb\u003ePart Number\u003c\/b\u003e: PAC-1360-16\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cdiv class=\"value description\" itemprop=\"description\"\u003e \u003cp\u003ePAC Racing's 1300 Series Drag Race Dual Valve Spring is the manifestation of the latest technology in the drag racing valvetrain aftermarket. Traditional springs were made with higher loads and rates without concern of spring mass and frequency. PAC Racing has taken years of research and coupled that with exotic new heat treatment methods to produce the next generation of drag racing valve springs. The 1300 Series springs feature a 15-30% reduction in physical mass. This, coupled with a natural frequency increase of 20%, enables your engine to rev higher, faster, and last longer even with aggressive camshaft profiles. These springs are constructed of our signature PACaloy super clean wire and are heat-treated in-house for precise spring rates and enhanced strength. They undergo a multi-peen process to optimize service life as well. Unique to the 1300 Series, these springs then receive ID\/O.D chamfer finishing, a run through the polisher, and a Nano-Peen \u0026amp; trade; proprietary surface treatment to improve operating cycles.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBuilt using our signature PACaloy super clean wire to ensure strength and durability\u003c\/li\u003e\n\u003cli\u003eIn-house heat-treating for precise spring rates and increased strength\u003c\/li\u003e\n\u003cli\u003eMulti-peen process to optimize service life\u003c\/li\u003e\n\u003cli\u003eID\/O.D chamfer finishing\u003c\/li\u003e\n\u003cli\u003ePolishing to improve operating cycles\u003c\/li\u003e\n\u003cli\u003eNano-Peen \u0026amp; trade; Proprietary Surface Treatment\u003c\/li\u003e\n\u003c\/ul\u003e \u003c\/div\u003e\u003cp\u003e\u003cb\u003eSpecifications\u003c\/b\u003e: \u003c\/p\u003e\u003cdiv class=\"content-body\"\u003eOuter Diameter - Outer Valve Spring: 1.522\"\u003cbr\u003eInner Diameter - Outer Valve Spring: 1.050\"\u003cbr\u003eInner Diameter - Inner Valve Spring: 0.726\"\u003cbr\u003eInstalled Height: 2.250\"\u003cbr\u003eInstalled Load \/ Height (Valve Closed): 400 LB @ 2.250\"\u003cbr\u003eOpen Height: 1.300\"\u003cbr\u003eOpen Load: 1252 PS\u003cbr\u003eOpen Load \/ Height (Valve Open): 1252 LB @ 1.300\"\u003cbr\u003eValve Spring Rate: 895 PS\u003cbr\u003eMax Coil Bind: 1.190\"\u003cbr\u003eMax Valve Lift: 0.950\"\u003cbr\u003eRecommended Valve Spring Retainer - 300 Series: N\/A\u003cbr\u003eRecommended Valve Spring Retainer - 400 Series: N\/A\u003cbr\u003eRecommended Valve Spring Retainer - 500 Series: R508, R509, R544\u003cbr\u003eRecommended Valve Spring Retainer - 600 Series: R608, R609, R644\u003cbr\u003eRecommended Valve Spring Seat: S110, SS125, S134\u003cbr\u003eRecommended Valve Spring Cup: C203\u003cbr\u003eValve Spring Series: 1300 Series\u003cbr\u003eValve Spring Type: Dual\u003cbr\u003ePrimary Application: Circle Track, Drag Race\u003c\/div\u003e\u003cp\u003e\u003c\/p\u003e","brand":"PAC","offers":[{"title":"Default Title","offer_id":49001551855843,"sku":"PAC-1360-16","price":1306.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/0821\/9875\/files\/hz6powz2alqofwl5srn8.jpg?v=1779456080","url":"https:\/\/fastlanespares.co.nz\/products\/pac-1300-series-dual-valve-springs-1-522-o-d-set-of-16-400-1252lbs-2-250-950-lift-1-190-coil-bind","provider":"Fast Lane Spares","version":"1.0","type":"link"}