The GT1 and fancier GT2 have the Series III 3800 V6 engine, putting out 200 hp (150 kW) and 230 lb·ft (310 Nm) of torque, while both GTPs have the supercharged (Eaton Gen 5 Supercharger) 3800 Series III V6 engine with 260 hp (195 kW) and 280 lb·ft (380 Nm) of torque.