LOL! Good one.
Every once in a while when I was bored, I'd take the air filter off mine and mess with air/fuel mixture screw. (Stupid me didn't get the tri-power, only had the 4-barrel.) You could get it to make all kinds of different sounds that way. One was a high pitched whistle.
Wouldn't race it that way, but would just cruise around for a bit, making people wonder just what I had under the hood.
Luckily, no one challenged me when I did that, lol. Guess they thought it was one big bad engine. (Or, upon reflection, maybe they thought it WAS one bad engine, lol.)