fits  17-25 M8 (excl. VVT models)

Chain drive. 487 CAM – The 487 Reaper CHOP is a great allround camshaft for 4-1/2 stroke 114″ – 117″ when looking for an aggressive bolt-in. The 487 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, like Feuling 993530 or 588021. Intake: .478 Valve Lift, 20.5 Open, 37 Close, 237 Duration @ 50″, .180 lift @ TDC, 98.5 Lobe Centerline. Exhaust: .487 Valve Lift, 44 Open, 17.5 Close, 241.5 Duration @ 50″, .146 lift @ TDC, 103.25 Lobe Centerline. Overlap: 38. *Cam specs measured in the engine on the lifter @ 0.050″ using a 1.61 rocker arm ratio.

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