5.0 Liter V-8 with 417 HP and 372 Ft-Lbs of torque. Eight speed transmission. Zero to 60 in 4.9 seconds. This image shows the IS-F on a dyno. Spectators wre allowed to drive the Lexus in a drag-strip scenario. Petal to the metal until the Lexus rep says stop which was in the 105 to 108 mph range. The engine sound at full throttle through the eight gears was incredible. Top speed claimed by Toyota is 185 mph. The IS-F goes on sale in Japan in December 2007.