S&S Cycle - 330-0002

Type: 551C; Timing Open: Intake 17º/Exhaust 41º; Timing Closed: Intake 19º/Exhaust 17º; Duration at 0.053: Intake 216º/Exhaust 238º; Valve Lift : Intake 0.550"/Exhaust 0.550"; Lift at TDC: Intake 0.178"/Exhaust 0.170"

551 cams are bolt-in cams for 2005-'16 engines. Cams that exceed the limits of the stock valve springs require the use of special high lift springs. Most S&S cams have higher lift than stock and are designed to take advantage of the extra flow of ported stock heads or S&S Super Stock® heads. Due to the high lift of these cams, S&S adjustable pushrods are recommended. Not all grinds are available in the chain drive version. To get the best performance from a performance cam installation, a high flow intake and exhaust system is also recommended.