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Author Topic: S&S Cam Questions  (Read 297 times)

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ltank

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    • CVO1: 2000 FXR4 S&S V111, CustomS.S. 2-1 exhaust, Primo-Rivera OD 6 speed, 49mm Custom Front End Ohlins 30mm Fork cartridges , Hyperpro Shocks, Barnett Scorpian Clutch
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S&S Cam Questions
« on: October 25, 2019, 01:33:22 AM »

The S&S 585 cam 45 intake valve close turns on at 3500 rpm. The 600 cam 55 intake valve close at 55 turns on at 3500, even though it closes 10 degrees  later. Then the 640 cam turns on at 3000 rpm that is 5 degrees later than the 600 cam? What am I missing? I understand that the later the intake valve closes the higher the rpm it turns on. But the 585 and 600 both turn on at 3500 and the even bigger cam the 640 turns on at 3000?
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