Bugatti V12 (3.5 QT)

V12 (60-valve, 5 valves/cyl)3.5 L (3,500 cc)Quad-turbo1991–1995553–603 hp (560–612 PS)

Designed by Paolo Stanzani / Nicola Materazzi (Bugatti Automobili). World’s first quad-turbo production engine; 60 valves, 12 throttle bodies, 8,250 rpm redline. Also used (enlarged to 3.8 L twin-turbo, ~680 hp) in the B Engineering Edonis. Sources: Wikipedia (Bugatti EB 110 / Bugatti V12 engine).