Reaper 487 CHOP Cam
Feuling Parts is well known for its long established 'Reaper' brand cams program, and seen here is the 487 Reaper CHOP cam - described as a great all-around camshaft and Feuling's go to for 4 1/2 stroke 114-117 applications for which an aggressive bolt-in chain drive cam is sought.
"The 487 has that nasty CHOP idle sound while producing a wide powerband that the Feuling cams are known for," says CEO Luke Leatherman. "It responds very well to increased bore and compression, upgraded exhaust system and performance air cleaner. We have built it in such a way that the use of performance valve-springs is not required, but they may result in a quieter, smoother running valve-train."
The intake delivers .478 Valve Lift, 20.5 Open, 37 Close, 237 Duration @ 50, .180 lift @ TDC, 98.5 Lobe Centerline. The exhaust gives .487 Valve Lift, 44 Open, 17.5 Close, 241.5 Duration @ 50, .146 lift @ TDC, 103.25 Lobe Centerline; with 38 overlap and cam specs measured in the engine on the lifter @ 0.050 using a 1.61 rocker arm ratio.
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