In this case it's the 5.2L Lambo V10's uneven firing order caused by the two banks being 90 degrees apart vs. the 144 crankshaft rotational degree spacing of exhaust pulses on a given 5-cylinder bank and opposing cylinders sharing a common, non-offset journal. In effect, this is two 5-cylinder engines sharing a common crankcase and crankshaft.
The musical third is lurking in this uneven timing and the heavy high harmonic content comes about when you have two banks that are even firing unto themselves.
A cross-plane American V8 is not even-firing on each side of the vee, but a bundle-of-snakes (180-degree) exhaust like in a Ford GT40 will get you some of that octave scream too.
In this case it's the 5.2L Lambo V10's uneven firing order caused by the two banks being 90 degrees apart vs. the 144 crankshaft rotational degree spacing of exhaust pulses on a given 5-cylinder bank and opposing cylinders sharing a common, non-offset journal. In effect, this is two 5-cylinder engines sharing a common crankcase and crankshaft.
The musical third is lurking in this uneven timing and the heavy high harmonic content comes about when you have two banks that are even firing unto themselves.
A cross-plane American V8 is not even-firing on each side of the vee, but a bundle-of-snakes (180-degree) exhaust like in a Ford GT40 will get you some of that octave scream too.