Buick Indy V6 engine

The Buick Indy V6 engine is a powerful turbocharged, 3.0–3.4 L (180–210 cu in), V-6, Indy car racing internal combustion engine, designed and produced by Buick for use in the C.A.R.T. PPG Indy Car World Series, and later the IRL IndyCar Series; between 1982 and 1997.^[5][6][7] It shares the same architecture, and mechanical design, and is based on the Buick V6 road car engine.^[8] A slightly destroked 3.0-liter V6 engine was also used in the March 85G and March 86G IMSA GTP sports prototypes.

Buick Indy V-6[1][2][3][4]
Overview
Manufacturer	Buick
Production	1982–1997
Layout
Configuration	90° V-6
Displacement	3.0–3.42 L (183–209 cu in)
Cylinder bore	4 in (100 mm)
Piston stroke	2.75–3.625 in (70–92 mm)
Valvetrain	OHV, two-valves per cylinder
Compression ratio	9.5:1
Combustion
Turbocharger	Garrett
Fuel system	Mechanical multi-point fuel injection
Fuel type	Gasoline/Methanol
Oil system	Dry sump
Output
Power output	800–900 hp (597–671 kW)
Torque output	550 lb⋅ft (746 N⋅m)