{"product_id":"comp-cams-31-600-9","title":"COMP Cams 31-600-9 Thumpr 227\/241Hydraulic Roller, Ford 221-302","description":"\u003cp\u003e\u003cem\u003eThe COMP Cams Thumpr camshafts delivers signature lopey idle, strong low-mid RPM torque, and improved horsepower. Ideal for street\/strip builds looking for aggressive sound, throttle response, and classic muscle performance.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eThe COMP Cams Thumpr camshaft delivers a signature lopey idle, strong low- to mid-RPM torque, and improved horsepower, making it ideal for street\/strip builds seeking aggressive sound, throttle response, and classic muscle performance. Designed for high-performance street applications, it provides an unmistakable idle quality while pairing exceptionally well with popular upgrades like the Edelbrock RPM Air Gap intake manifold and TCI Saturday Night Special torque converter. Built withfull-size base circles for added durability, this cam works seamlessly with COMP Cams Evolution hydraulic roller tappets and eliminates the need for dog bones and lifter retainers—components never intended for pre-1985 applications. This camshaft supersedes part number 31-600-8, delivering proven performance and simplified valvetrain compatibility in one upgraded design.\u003c\/p\u003e\n\u003ch4\u003eFeatures\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eFeatures full-size base circles, works seamlessly with our Comp Cams Evolution hydraulic roller tappets.\u003c\/li\u003e\n\u003cli\u003eEliminates the need for dog bones and lifter retainers, which were never intended for use in pre-1985 applications.\u003c\/li\u003e\n\u003cli\u003eSupersedes 31-600-8\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExhaust Lobe Lift\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.322 IN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntake Lobe Lift\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.332 IN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExhaust Valve Lift with Factory Rocker Arm Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.515 IN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntake Valve Lift with Factory Rocker Arm Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.531 IN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFactory Rocker Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntake Centerline\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e102 DD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLobe Separation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e107 DD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBasic Operating RPM Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1900 - 5600 R3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntake Duration at .050 Inch Lift\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e227 DD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExhaust Duration at .050 inch Lift\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e241 DD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAdvertised Intake Duration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e283 DD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAdvertised Exhaust Duration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e303 DD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAdvance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 DD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCross sell \/ Upsell Part Numbers\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e89311-16, 1431-16, 431M, 26986-16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBillet Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine Platform\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFord Small Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFiring Order\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFS\/FF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExhaust Valve Lash\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHyd\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntake Valve Lash\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHyd\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCam Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHydraulic Roller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eComputer Controlled Compatible\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDirect Injection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFuel Management Strategy Compatible\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVVT Compatible\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLifter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRoller Tappet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCamshaft Series\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThumpr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eValve Springs Required\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Guide:\u003c\/strong\u003e \u003ca href=\"https:\/\/sdda.semadata.org\/Standard\/Edelbrock\/145.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eDownload PDF\u003c\/a\u003e\u003c\/p\u003e\n\u003chr\u003e\u003cp class=\"prop65-warning\"\u003e\u003cstrong\u003e⚠️ California Proposition 65 Warning\u003c\/strong\u003e\u003cbr\u003eCalifornia Residents: This product can expose you to chemicals which are known to the State of California to cause cancer or other reproductive harm. Please visit www.p65warnings.ca.gov for more information.\u003c\/p\u003e","brand":"COMP Cams","offers":[{"title":"Default Title","offer_id":45967787393068,"sku":"31-600-9","price":562.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0687\/6007\/6332\/files\/31-493-9_Camshaft_V2_76beee76-c8a7-4e95-b2a3-e493e3863efb.jpg?v=1786904121","url":"https:\/\/carpartglobal.com\/products\/comp-cams-31-600-9","provider":"Car Part Global","version":"1.0","type":"link"}