It's not unusual for modern performance cars to make over 200 hp/liter, with ultra-exclusive supercars even breaching the 300 ...
With 475-500 hp and 10,600 rpm redline, it's the ultimate Atom, but not road-legal in the US.
Ford has designed some beastly engines across its history, but one stands out with its stratospherically-high redline.
This Free-Breathing Five-Liter Connects To Combustion's Golden Age ...