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The Chevrolet Indy V6 engine is a 2.2-liter, twin-turbocharged, V-6 racing engine, developed and produced by Ilmor Engineering-Chevrolet for the IndyCar Series. Chevrolet has been a highly successful IndyCar Series engine supplier since 2012, scoring 100 IndyCar wins, 35 pole positions, 7 IndyCar Series driver's titles and 7 IndyCar Series manufacturer's titles. On November 12, 2010, Chevrolet confirmed their return to the IndyCar Series 2012 season after 6-year absence. They design, develop, and assemble the twin-turbo V6 Chevrolet IndyCar engine in partnership with Ilmor Engineering, and supply engines to A. J. Foyt Enterprises, Dreyer & Reinbold Racing, Ed Carpenter Racing, Juncos Hollinger Racing, Arrow McLaren and Team Penske teams.^[2]

Specifications

Engine type: Chevrolet V-6 - twin-turbocharged
Capacity: 2,200 cc (134 cu in)
HP rating (speedway / 1.5-mile oval / road-street course): 575 hp (429 kW) / 625 hp (466 kW) / 675 hp (503 kW)
Max. RPM/Rev limiter: 12,000 rpm; 12,200 rpm overtake
Weight: 248 lbs. (112.5 kg)
Oil system: Dry-sump lubrication
Turbocharger: Twin - BorgWarner EFR7163
Turbocharger boost levels (speedway / 1.5-mile oval / road-street course / push-to-pass): 1.3 bar (19 psi) / 1.4 bar (20 psi) / 1.5–1.6 bar (22–23 psi) / 1.65 bar (24 psi)
Camshafts: Double-overhead camshafts
Valve actuation: Finger-follower
Valve springs: Wire-type
Cylinder head: 4 valves (titanium) per cylinder
Fuel injection: Hitachi/Bosch 6x direct in-cylinder fuel. Hitachi/Bosch 6x high pressure port injectors
Fuel: E85 Ethanol provided by Sunoco (2012–2018) and Speedway (2019-2022), E100 Renewable Ethanol provided by Shell V-Power Nitro+ (2023-present)
Lubricants: Shell Helix Ultra or Pennzoil Ultra Platinum (Team Penske and rest of teams) and Lucas Oil (Arrow McLaren)
Block & head material: Aluminum
Crankshaft: Billet steel
Con rods: Billet steel
Pistons: Billet aluminum
Intake systems: Single plenum - carbon-fiber
Throttle systems: Electronic throttle control
Electronic control unit: McLaren Electronics - TAG-400I
Engine service life: 2,500–2,850 miles
Gearbox: Sequential gearbox, paddle-shift