Developed based on thorough analysis of Dallara’s previous body and following extensive testing using computational fluid dynamics and a rolling-road wind tunnel, the Chevy aero kit sets itself apart from the previous DW12 design by means of new front wing elements, side pods, and rear wing.

At the front, there’s a more protruding nose similar to those seen on this year’s F1 cars, and a completely reshaped wing featuring a sleek, three-tier winglet design. Two additional wings are mounted on both sides to help channel air up over the front suspension and wheels.


Chevrolet didn’t release photos of the car’s cockpit, but there would be nothing much to see except a multifunction steering wheel, a lightweight racing seat with multi-point harness, and a no-nonsense, exposed floor. As always, the cockpit was built per IndyCar regulations, which focus on driver safety above everything else. Not exactly surprising given the speeds these cars can reach and the fact that there have been two fatal crashes in the last decade.

Drivetrain details are scarce for 2015, but the engine is likely a revised version of last year’s unit. That said, each Chevrolet Chevrolet will use the twin-turbocharged, 2.2-liter V-6 designed and built by Britain’s Ilmor Engineering for GM, that runs on E85 (85% ethanol, 15% racing gasoline).

 In the 2014 configuration, the powerplant generated up to 675 horsepower — depending on track configuration — at 12,000 rpm, using Borg Warner turbos and a carbon-fiber intake system. The engine control unit is provided by McLaren and TAG. A sequential transmission with paddles mounted behind the steering wheel channels all that power to the pavement.