In its latest technical evolution, the NTT IndyCar Series rolled out the first examples of what will eventually be a fully new, EV-capable powertrain combination for the 2024 season. The basic formula will continue – a twin-turbocharged V-6 – only displacement is being increased from the current 2.2 liters to 2.4 for the new formula. Honda and Chevrolet, IndyCar’s two current powertrain suppliers, both turned out this week on the road course at the Indianapolis Motor Speedway. Honda’s test bed, shown here, was fielded by Chip Ganassi Racing and driven by multi-time series champion Scott Dixon. Representing Chevrolet was Team Penske, with Josef Newgarden in the seat.
Fueled by an E85 blend, the new 2.4 turbo engines are expected to produce 900 horsepower in race trim, and be fully adaptable to a hybrid-assist system with Formula 1-style energy-recovery technology. Neither of the Dallara chassis that carried the new engines in the IMS test were so equipped; the hybrid drive remains under active development for an expected 2024 competition rollout, with supply-chain issues slowing that process so far.