IndyCar Series engines are rev-limited to 10,300 Revolutions per minute (rpm) and produce approximately 650 hp. The valve train is a dual overhead camshaft configuration with four valves per cylinder. The crankshaft is made of alloy steel, with five main bearing caps. The pistons are forged aluminum alloy, while the connecting rods are machined alloy steel. The electronic engine management system is supplied by Motorola, firing a Capacitor discharge ignition (CDI) ignition system. The engine lubrication is a dry sump type, cooled by a single water pump.