Very cool video about an old Hemi engine:

http://www.youtube.com/watch?v=JEfYnByuTQ0

 

That was cool...thanks for sharing

 

I remember hearing sirens like that as a kid. I think they were used mainly as tornado warnings though. I dont know what powered them but if that Hemi powered siren on the video was even half as loud as the ones in my childhood, I can't see how Don and Robbie's eardrums aren't completely shredded.

 

That was amazing it started that easy.