{"product_id":"comp-cams-valve-spring-1-550in-nascar-cca933-1","title":"COMP Cams Valve Spring 1.550in Nascar - cca933-1","description":"Dual Valve Springs from COMP Cams are manufactured from Super Clean wire and subject to extensive quality control testing to deliver a valve spring assembly with superior strength, durability and valve train stability, no matter what the application. The dual spring design creates a stronger valve spring that can easily handle the increased lift found in extreme stress applications. COMP Cams Dual Valve Springs exceed the expectations of today’s engine builders and racers. PartNumber : cca933-1 Description : Hi-Tech Oval Track Valve Springs; Single Piece Title : 933-1 Valve Spring, 1.550\" NASCAR California Proposition 65 : WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov Coil Bind Height : 1.2 Compatible .570\" Guide Diameter Spring Seat : 4781-1 Compatible .630\" Guide Diameter Spring Seat : 4782-1 Compatible Retainer : 741-1 Compatible Shims : 4757 Compatible Spring Cup (O.D. Locator) : 4700-1 Damper : Yes Inner Spring Inside Diameter : 0.719 Number of Springs : 2 Outer Spring Inside Diameter : 1.128 Outer Spring Outside Diameter : 1.563 Seat Height : 1.95 Seat Pressure : 171 Spring Rate : 494 Open Height(in) : 1.3 Spring Rate(lbs\/in) : 490 Installed Height(in) : 1.95 Outside Diameter(in) : 1.55 Installed Pressure(lbs) : 176 Open Pressure(lbs) : 494 Camshaft Type : Mechanical Coil Bind Height(in) : 1.2 Inside Diameter(in) : 0.73 Spring Type : Double Position : N\/A   Engine Components::Valve Springs, Retainers ","brand":"COMP Cams","offers":[{"title":"Default Title","offer_id":42580689780991,"sku":"","price":18.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/1106\/2015\/products\/1ce4ab29799b8a7776d4a55a2b573f1b__52572.jpg?v=1647918394","url":"https:\/\/aristocrat-autosport-llc.myshopify.com\/products\/comp-cams-valve-spring-1-550in-nascar-cca933-1","provider":"Aristocrat Autosport ","version":"1.0","type":"link"}