Bugatti Straight-8 (Type 35)

Straight-8 (SOHC, 3-valve)2.0 L / 2.3 LNaturally aspirated / supercharged (35B/C)1924–193090–138 hp

Designed by Ettore Bugatti. Powered the most successful racing car in history (1,000+ wins, 1926 GP World Championship); roller-bearing crankshaft. Sources: Wikipedia (Bugatti Type 35); Bugatti newsroom.