I am not sure I understand this correctly so please correct me if I am wrong. With this cam spec ( 271/288 Advertised duration, with a 111 Lobe Centerline Angle and 8 degrees of advance ), the Intake center line is 111 - 8 = 103, the exhaust center line is 111 + 8 = 119, with 17 degrees more duration on the exhaust it moves the exhaust centerline by 8.5 to 127.5, so the actual LSA is 103 + 127.5 / 2 = 115.25. Is my understanding correct?

 

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