Terry
SOH-CM-2016
I keep seeing this Dodge truck commercial which says the hemi was first tested in an aircraft. So I searched and sure enough, an inverted V-16 hemi engine tested in a P-47 which managed over 500 mph in level flight at 15k feet. It was never produced as the war was winding down. Info here quarter page down. What an air racer it would have made at Reno!!!
http://www.allpar.com/mopar/hemi/chrysler-hemi.html
http://www.allpar.com/mopar/hemi/chrysler-hemi.html