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J and P Cycles
J&P Cycles, Inc. was founded by John and Jill Parham in 1979. It sells motorcycle components, apparel, and gear for the American V-twin motorcycle rider.
Detail
S&S 640 Cam For Harley Big Twin Evo Features: For large displacement motors with compression ratios of 10.5-11.5:1 Can be used in smaller motors with 11:1-12:1 compression ratio The S&S 640 cam features the latest design in controlled ramps and is intended for hydraulic lifters With lower TDC lifts and faster ramps than the S&S 631 cam, the 640 cam builds higher cylinder pressure Therefore it does not require as much compression as the 631 640 Cam Info: Designed for large-displacement engines (110) with 10.5:1-11.5:1 compression ratio or smaller engines (96-107) with 11:1-12:1 compression ratio 3000 Rpm-6000 RPM Does not require as much compression as 631 cam and provides more linear power delivery Less overlap and fast ramps build higher cylinder pressure Lower TDC lift makes installation easier Intake open/close 25/60 Exhaust open/close 65/20 Intake duration 265 Exhaust duration 265 Lift .640
