I have said the sound for mine is more of a Rut-rut-rut sound and when lugging the engine in 1st or 2nd it becomes a long ruuuuuuuuuuuuuuutttttttttt sound. When I do the 90 on my private road to get home it always makes that long ruuuuuuuuttttttttttt around the corner. This is why when you are pulling up to a spot at a show and you are doing the curvy back in to your slot it is rather embarrassing when folks ask about the sound and what is wrong with the Vette. I just tell 'em it is the Hi-Po ceramic clutch rather that the long drawn out full actual explanation. That always leaves 'em in a quandary. Once I pop da hood they start asking other questions. Like is that a HEMI - then you tell 'em all about the Pent-roof design and how it is better than a HEMI.
http://en.wikipedia.org/wiki/Pent-ro...ustion_chamber