PART # DESCRIPTION EMIS* 0925-1609 487 chain drive cam 3 PART # DESCRIPTION EMIS* 0925-1608 618 F chain drive cam 3 CAM SPECS MEASURED IN THE ENGINE ON THE LIFTER @ 0.050” USING A 1.61 ROCKER ARM RATIO GRIND VALVE LIFT OPEN CLOSE DURATION @ 0.053” LIFT @ TDC LOBE CENTERLINE 487 Intake 0.478 20.5° 37° 237° 0.180” 98.5° Exhaust 0.487 44° 17.5° 241.5° 0.146” 103.25° 618 F Intake 0.608 20° 42° 242° 0.195” 101° Exhaust 0.618 65° 19° 264° 0.170” 113° REAPER® CAMS FOR 17-24 M-EIGHT MOTORS • Produce more power and torque in the riding rpm range, improving throttle response, acceleration and fuel mileage • Smooth camshaft lobe ramps are easier on valvetrain components and eliminate excessive valvetrain noise and wear • Dyno proven and track tested • Made in the U.S.A. 487 CAM • 487 Reaper® CHOP is a great all-around camshaft and Feuling’s® go to for 41/ 2 stroke 114” and 117” looking for an aggressive bolt-in • Has that nasty CHOP idle sound while producing a wide powerband that the Feuling cams are known for • Responds very well to increased bore and/or compression, exhaust system and air cleaner • Use of performance valve springs is not required but may result in a quieter, smoother running valve train; see PART #s 0926-2973 or 0926-2974 in the 2024 Drag Specialties FatBook NOTE: 618 F Cam requires high lift/high load valve springs (see PART #0926-3138 in the 2024 Drag Specialties FatBook) and heavy-duty pushrods (see PART #09280091 in the Drag Specialties FatBook). Clearances must be checked when installing this cam. NOTE: Due to the unstable nature of this 4-valve engine design with one rocker arm activating two valve springs, Feuling highly recommends running one-piece pushrods over quick-install adjustable pushrods to maintain maximum cam/valve lift and reduce valvetrain harmonics and associated hydraulic lifter issues. NOTE: Feuling fastener kit PART #2401-0994 also highly recommended to help prevent cylinder head cracking; kit replaces the rocker shaft bolts with studs and nuts to help reduce the stress of the rocker shaft standoffs. NOTE: Not for 2023-2024 models with 121” VVT motors. 618 F CAM • Requires large bore size, ported cylinder heads, ported intake manifold, high flow valves and a large throttle body • Aggressive camshaft requires high lift/high load valve springs, performance pushrods and lifters • High-flow air cleaner and triple stepped exhaust pipe are highly recommended • Feuling also recommends matching this cam with Race Series® oiling system PART #s 0932-0199 or 0932-0218 are in the 2025 Drag Specialties FatBook • 3100 to 6650 rpm range PART # DESCRIPTION 0925-1613 For 17-24 M-Eight HYDRAULIC CAM CHAIN TENSIONER KIT • Allows engine builders to install or replace the hydraulic cam chain system on most 17-24 M-Eight models • Includes outer roller chain PART #0925-0954, 17-tooth crankshaft cam drive sprocket PART #0925-1058, hydraulic cam chain tensioner pad PART #0925-1612 and camshaft sprocket spacing alignment/thrust washer kit PART #0925-0951 • Will also work with a combination of factory, SE or S&S® cam plate systems NOTE: Included camshaft sprocket spacing alignment/thrust washer kit PART #0925-0951 will NOT fit 2023-2024 models with 121” VVT motors. PART # DESCRIPTION 0925-1607 For 17-24 M-Eight; repl. OEM #25500013 HYDRAULIC CAM CHAIN TENSIONER ASSEMBLY • Tensioner housings are precision machined from billet 6061 aluminum, pads are injection-molded nylon with PTFE added to increase wear and friction resistance • Single piston design duplicating the output pressure of stock units • Include ARP® 12-point hardware • Sold each • Made in the U.S.A. PART # DESCRIPTION 0925-1612 For 17-24 M-Eight HYDRAULIC CAM CHAIN TENSIONER PAD • Injection molded Nylon with PTFE added to increase wear and friction resistance • Includes chain tensioner pad and pin • Works with factory aluminum housing and hydraulic unit • Sold each • Made in the U.S.A. 6 MARCH 2025 DRAGSPECIALTIES.COM THE DRAG SPECIALTIES DISCLAIMER: PRODUCTS WITH EMIS CODE 1 ARE EMISSION COMPLIANT IN ALL STATES, INCLUDING CALIFORNIA. PRODUCTS WITH EMIS CODES 2 ARE EMISSION COMPLIANT IN ALL STATES EXCEPT CALIFORNIA. PRODUCTS WITH EMIS CODE 3 ARE “COMPETITION USE” ONLY, AND NOT LEGAL IN ANY STATE FOR STREET USE ON ANY POLLUTION-CONTROLLED VEHICLES. PRODUCTS WITH EMIS CODE 4 HAVE NO U.S. TERRITORY RESTRICTIONS
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