Do equal length header tubes make a difference in sound?

[LAB3]

Do equal length header tubes make a difference in the sound of an engine? After watching this video my vote is a resounding YES!

The presentation itself isn't all that interesting and at 14 minutes it runs longer than it really needs to but man, they really do a great job at showcasing different engine types. Imagine an all American V8 sounding like an F1 racer, it IS quite possible (but darn near impractical)

[Rob S.]

That's a LOT of exhaust pipe!

[rphillips]

Have you heard a V-8 Chevy with 180 degree headers??? almost makes 7K rpm sound more like 15K rpm. Ust'a be allowed on race cars at Fairgrounds Speedway in Nashville. Outlawed on the classes they run there today.

[LAB3]

Have you heard a V-8 Chevy with 180 degree headers??? almost makes 7K rpm sound more like 15K rpm. Ust'a be allowed on race cars at Fairgrounds Speedway in Nashville. Outlawed on the classes they run there today.

Looked up couple of articles on those and listened to a video of one running, seems it takes a flat plane crank running at 4-6k rpm to get the best performance out of those. The dual 4 into 1 sounds good but you have to admit, the 8 into 1 in the video is something spectacular.

[JMHJ]

Every one of those bends is a restriction; the overall length adds pressure drop too. They pipes are so large though it may not matter much. And the pulsing thing vs continuous flow would seem to significantly complicate envisioning what's going on inside there.

[LAB3]

The presenter made it pretty clear they didn't dyno any of these exhaust systems, they did it purely for the sound.