These three cars have engines differing no more than 10% in CubicCentimeters (5474/5748/5998). Their amount of HP differs vastly (442/515/620). Part of the reason why the power is so different lies in the different design of the in and outlet systems. But this cannot be the whole story. Would anybody, having acces to the cam timing values for these three engines, be so nice to publish them ?
From Owner's manuals for 456 and 575M. No guarantees that these are correct, even from the factory. 456 Intake opens 6 d BTDC, closes 54 d ABDC Exhaust opens 54 d BBDC, closes 10 ATDC 575M Intake opens 7 d BTDC, closes 53 d ABDC Exhaust opens 33 d BBDC, closes 13 d ATDC Given the variable cam timing in the 599, I don't know what a static set of numbers would tell you.