General Engine Design Information 31 Engine Optional Equipment Volvo Engine Brake — 350 hp braking power @ 2,300 rpm. Side-mounted engine PTO — output up to 60 hp or 300 ft-lb Rear-Mounted engine PTO-output up to 250 hp or 610 ft-lb Twin cylinder air compressor Intake air preheater Engine block heater for coolant Engine oil pan heater 85 or 135 Amp alternator Thermostatically-controlled ON/OFF fan clutch Fast Lube Oil Change System (FLOCS) (VN only)