sounds like a gear drive...

[wayne petty]

just was out drivng around and saw a silver 69 camaro with yenco/sc stripes... no time for a cell phone camera pic.. i did run the windows down so i could hear it..

rumble rumble   whirrrrrrrr as is pulled away...

uuuoooohhhhh!!!!   a gear drive or a blower......

then i got to thinking. straight cut gears...

hmmm... just like remote control cars had a long time a go... you could hear them whirrr.. as they accelerated...

then i put two and two together  kids grew up hearing that noise from their toy cars .. so real cars must need to make the same noise...

[kb426]

My son had one of those on his 83 mustang 5.0. The night we finished it up, it was running in the garage when my wife came home. I went inside and asked what she thought. Her response was" when are you going to fix it?" I still find that entertaining.