{"product_id":"comp-cams-camshaft-cs-xr258hr-10-cca12-408-8","title":"COMP Cams Camshaft CS XR258HR-10 - cca12-408-8","description":"*Xtreme Energy Camshafts*  * Quicker opening lobe profiles deliver increased responsiveness \u0026amp; more area under the lift curve  * More vacuum allows an increase in duration for improved performance and assists power brakes  * Excellent performance in street carbureted applications    * Best performance with aftermarket intake manifolds, headers, lower gear ratios, etc. PartNumber : cca12-408-8 Description : Xtreme Energy Camshaft Title : 12-408-8 CamShaft, CS XR258HR-10 Advertised Exhaust Duration : 264 Advertised Intake Duration : 258 Assembly Lubricant Included : No Basic Operating RPM Range : 1,000-5,000 California Proposition 65 : WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov Cam Type : Hydraulic Roller Camshaft Gear Attachment : 3-Bolt Camshaft Material : Austempered Ductile Iron Camshaft Series : Xtreme Energy Engine Family : Chevrolet 262-400 c.i. 8 Cylinder (1958-1998) Exhaust Duration at .050 inch Lift : 212 Exhaust Valve Lift : 0.487 Grind Number : XR258HR Intake Duration at .050 Inch Lift : 206 Intake Valve Lift : 0.48 Lifter Style : Hydraulic Roller Lifters Included : No Lobe Separation : 110 Usage : Street\/Performance Valve Springs Required : Yes K-Kit Upgrade : K12-408-8 SK-Kit Upgrade : SK12-408-8 Cam and Lifter Kit Upgrade : CL12-408-8 Exhaust Duration : 264 Intake Valve Lift(in) : 0.480 Exhaust Valve Lift(in) : 0.487 RPM Range : 1000-7000 Exhaust Duration @ .050 in. : 212 Lifter Type : Hydraulic Roller Intake Duration : 258 Intake Duration @ .050 in. : 206   Engine Components::Camshafts ","brand":"COMP Cams","offers":[{"title":"Default Title","offer_id":42580489699583,"sku":"","price":416.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/1106\/2015\/products\/1ce4ab29799b8a7776d4a55a2b573f1b__54298.jpg?v=1647913075","url":"https:\/\/aristocrat-autosport-llc.myshopify.com\/products\/comp-cams-camshaft-cs-xr258hr-10-cca12-408-8","provider":"Aristocrat Autosport ","version":"1.0","type":"link"}