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• Produces more power and torque in the riding rpm range,
improving throttle response, acceleration and fuel mileage
• Direct bolt-in replacement for M-Eight engines; can be used
with stock valve springs, pushrods, lifters and exhaust
• Will respond well when used with increased bore and/or
compression, or full exhaust system and a high-flow air cleaner
• Smooth camshaft lobe ramps are easier on valvetrain components
and eliminate excessive valvetrain noise and wear
• Dyno proven and track tested
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
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.
• 472 chain drive cam
• 472 (CAM SPECS MEASURED IN THE ENGINE ON THE LIFTER @ 0.050” USING A 1.61 ROCKER ARM RATIO)
• GRIND Intake VALVE LIFT 0.468 OPEN 8° CLOSE 25° DURATION @ .050” 213° LIFT @TDC 0.117” LOBE CENTERLINE 98.5°
• GRIND Exhaust VALVE LIFT 0.472 OPEN 50.7° CLOSE 7.75° DURATION @.050” 238° LIFT @TDC 0.110” LOBE CENTERLINE 111.5°
• FEULING OIL PUMP CORP. 1350