Overview. Dodge Ram SRT-10 engine. The main attraction of the SRT-10 is its engine, which is an 8.3 Liter V10 Viper Engine. This engine produces 500 bhp (373 kW; 507 PS) at 5,600 rpm and 525 lb·ft (712 N·m) of torque at 4,200 rpm. The regular cab, with a total wet weight of 5,100 lb (2,300 kg), making the truck reach a top speed of 155 mph ...