engine Aluminum, 90 Degree V8 position Front Longitudinal valvetrain OHV, 2 Valves per Cyl displacement 6750 cc / 411.9 cu in bore 104.1 mm / 4.1 in stroke 99.1 mm / 3.9 in compresion 8.0:1 power 298.3 kw / 400 bhp @ 4000 rpm hp per litre 59.26 bhp per litre bhp/weight 117.99 bhp per tonne torque 835.18 nm / 616.0 ft lbs @ 3250 rpm front brakes Vented Discs rear brakes Vented Discs front wheels F 48.3 x 22.9 cm / 19.0 x 9.0 in rear wheels R 48.3 x 22.9 cm / 19.0 x 9.0 in front tire size 285/55 R 19 rear tire size 285/55 R 19 steering Rack & Pinion w/Power Assist f suspension Double Wishbones w/Coil Springs, Anti-Roll Bar, Adaptive Damping r suspension Double Wishbones w/Coil Springs, Anti-Roll Bar, Adaptive Damping weight 3390 kg / 7474 lbs length 6220 mm / 244.9 in width 2000 mm / 78.7 in height 1770 mm / 69.7 in transmision GM 4L80-E 4-Speed Auto gear ratios 2.48:1, 1.48:1, 1.00:1, 0.75:1