{"product_id":"comp-cams-1-550-nascar-valve-spring","title":"Comp Cams 1.550 Nascar Valve Spring","description":"\u003cp\u003e1.550 Nascar Valve Spring from COMP Cams. The part number and specifications are listed below. Valve springs close the valves and keep them following the cam at high rpm.\u003c\/p\u003e\u003ch3\u003eQuick facts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e COMP Cams\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart type:\u003c\/strong\u003e Valve spring set\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eO.D. of Outer Dia. 1:\u003c\/strong\u003e 1.550\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI.D of Outer Dia. 2:\u003c\/strong\u003e 1.136\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI.D. of Inner Dia. 3:\u003c\/strong\u003e 0.730\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDamper:\u003c\/strong\u003e Y\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoil Bind:\u003c\/strong\u003e 1.200\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRate (Lbs.\/In.):\u003c\/strong\u003e 494\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTitanium Retainer:\u003c\/strong\u003e 732, 721\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel Retainer:\u003c\/strong\u003e 1732, 741\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCup Seat:\u003c\/strong\u003e 4700, 4781, 4782\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eTip:\u003c\/strong\u003e Check installed height and coil bind against the spec from the brand before you start the engine.\u003c\/p\u003e","brand":"COMP Cams","offers":[{"title":"Default Title","offer_id":67736992350522,"sku":"01B2V","price":20.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/8245\/2538\/files\/c9fd30cb596fb6e602dbf4ddc6c45af6.jpg?v=1792460319","url":"https:\/\/partotter.com\/products\/comp-cams-1-550-nascar-valve-spring","provider":"PartOtter","version":"1.0","type":"link"}