{"product_id":"comp-cams-camshaft-chevrolet-small-block-12-602-4","title":"Comp Cams Big Mutha' Thumpr Hydraulic Flat Cam for Chevrolet Small Block – 12-602-4","description":"\u003cp\u003e\u003cstrong data-start=\"371\" data-end=\"405\"\u003eComp Cams Part Number 12-602-4\u003c\/strong\u003e is a Big Mutha' Thumpr hydraulic flat tappet camshaft engineered for \u003cstrong data-start=\"475\" data-end=\"528\"\u003eChevrolet Small Block 262–400 engines (1958–1998)\u003c\/strong\u003e. Designed for aggressive street\/strip performance, this camshaft delivers a very rough idle and requires supporting modifications including \u003cstrong data-start=\"669\" data-end=\"753\"\u003e9.5:1 compression, 2800+ stall converter, performance intake, gears, and headers\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 data-start=\"761\" data-end=\"784\"\u003e\u003cstrong data-start=\"764\" data-end=\"784\"\u003eProduct Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-start=\"785\" data-end=\"1142\"\u003e\n\u003cli data-start=\"785\" data-end=\"846\"\u003e\n\u003cp data-start=\"787\" data-end=\"846\"\u003eBig Mutha' Thumpr series for an extremely aggressive idle\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"847\" data-end=\"881\"\u003e\n\u003cp data-start=\"849\" data-end=\"881\"\u003eHydraulic flat tappet camshaft\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"882\" data-end=\"940\"\u003e\n\u003cp data-start=\"884\" data-end=\"940\"\u003eDesigned for Chevrolet Small Block 262–400 (1958–1998)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"941\" data-end=\"992\"\u003e\n\u003cp data-start=\"943\" data-end=\"992\"\u003eOptimized for a 2,500–6,400 RPM operating range\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"993\" data-end=\"1071\"\u003e\n\u003cp data-start=\"995\" data-end=\"1071\"\u003eRequires 9.5:1 compression and supporting drivetrain\/exhaust modifications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1072\" data-end=\"1106\"\u003e\n\u003cp data-start=\"1074\" data-end=\"1106\"\u003eStreet\/strip performance focus\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1107\" data-end=\"1142\"\u003e\n\u003cp data-start=\"1109\" data-end=\"1142\"\u003e3-bolt camshaft gear attachment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCamshaft Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHydraulic Flat Tappet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThumpr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine Family\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eChevrolet 262–400 c.i. (1958–1998)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRPM Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2,500–6,400\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAdvertised Duration (Int\/Exh)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e295 \/ 313\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDuration @ .050\" (Int\/Exh)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e243 \/ 257\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eValve Lift (Int\/Exh)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.500 \/ 0.486\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLobe Separation Angle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e107°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntake Open (BTDC)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e44°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntake Close (ABDC)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e71°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExhaust Open (BBDC)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e84°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExhaust Close (ATDC)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e49°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eValve Timing @ .006\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGear Attachment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-Bolt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUsage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStreet\/Strip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLifter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHydraulic Flat Tappet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12 Months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUPC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e036584175278\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEmissions Code\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCalifornia Proposition 65\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCancer and Reproductive Harm (P65Warnings.ca.gov)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 data-start=\"2038\" data-end=\"2052\"\u003e\u003cstrong data-start=\"2041\" data-end=\"2052\"\u003eFitment\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-start=\"2053\" data-end=\"2189\"\u003e\n\u003cli data-start=\"2053\" data-end=\"2076\"\u003e\n\u003cp data-start=\"2055\" data-end=\"2076\"\u003e\u003cstrong data-start=\"2055\" data-end=\"2064\"\u003eMake:\u003c\/strong\u003e Chevrolet\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2077\" data-end=\"2127\"\u003e\n\u003cp data-start=\"2079\" data-end=\"2127\"\u003e\u003cstrong data-start=\"2079\" data-end=\"2097\"\u003eEngine Family:\u003c\/strong\u003e 262–400 c.i. Small Block V8\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2128\" data-end=\"2158\"\u003e\n\u003cp data-start=\"2130\" data-end=\"2158\"\u003e\u003cstrong data-start=\"2130\" data-end=\"2146\"\u003eModel Years:\u003c\/strong\u003e 1958–1998\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2159\" data-end=\"2189\"\u003e\n\u003cp data-start=\"2161\" data-end=\"2189\"\u003e\u003cstrong data-start=\"2161\" data-end=\"2180\"\u003eCam Gear Style:\u003c\/strong\u003e 3-bolt\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"COMP Cams","offers":[{"title":"Default Title","offer_id":47278414758056,"sku":"CCA12-602-4","price":288.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0496\/1016\/2344\/files\/27bb2407851f28ce18fffa6e73b890eb_32068462-ae0f-412d-b6a6-7275a510166d.jpg?v=1711107749","url":"https:\/\/eliteracefab.com\/products\/comp-cams-camshaft-chevrolet-small-block-12-602-4","provider":"eliteracefab.com","version":"1.0","type":"link"}