{"product_id":"comp-cams-cl12-602-4-big-mutha-thumpr-243-257-hydraulic-flat-cam-lifter-kit-chevrolet-small-block-size-cam-and-lifter-kit-style-2-500-6-400-rpm-range","title":"COMP Cams CL12-602-4 Big Mutha' Thumpr 243\/257 Hydraulic Flat Cam\/Lifter Kit Chevrolet Small Block - size: Cam and Lifter Kit, style: 2,500-6,400 RPM Range","description":"\u003ch3\u003eAbout this item\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eStreet\/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle.\u003c\/li\u003e\n\u003cli\u003e2,500-6,400 RPM Operating Range\u003c\/li\u003e\n\u003cli\u003e243\/257 Duration at .050\". 107 Degree Lobe Separation Angle. 0.500\"\/0.486\" Valve Lift\u003c\/li\u003e\n\u003cli\u003eCL Kits include a camshaft, a set of lifters, instructions and assembly lubricant.\u003c\/li\u003e\n\u003cli\u003eEarly intake valve opening and long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note. Best with aftermarket converters and more rear gear.\u003c\/li\u003e\n\u003cli\u003ePerfect choice for muscle cars and street rods - Three unique cam designs: Thumpr, Mutha' Thumpr and Big Mutha' Thumpr deliver excellent horsepower gains and broad torque curve.\u003c\/li\u003e\n\u003cli\u003eFits Chevrolet GEN 1 Small Blocks including the 262, 265, 267, 283, 302, 305, 307, 327, 350 and 400. Does not fit LT1\/LT4, or factory roller Small Blocks built from 1985 and newer.\u003c\/li\u003e\n\u003cli\u003eMade in USA\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Brand: Comp Cams","offers":[{"title":"Default Title","offer_id":50338892775664,"sku":"B002EE5CMG-size-cam-and-lifter-kit-style-2-500-6-400-rpm-range","price":660.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0843\/8464\/5360\/files\/31oGnLCuhmL_887cc44b-2931-4eac-be20-a2a918e43b92.jpg?v=1788148838","url":"https:\/\/wrenchvanta.com\/products\/comp-cams-cl12-602-4-big-mutha-thumpr-243-257-hydraulic-flat-cam-lifter-kit-chevrolet-small-block-size-cam-and-lifter-kit-style-2-500-6-400-rpm-range","provider":"WrenchVanta","version":"1.0","type":"link"}