Oldsmobile Aurora Indy V8 engine

The Oldsmobile Aurora Indy V8 engine is a 3.5-liter to 4.0-liter, naturally-aspirated, V-8 Indy car racing engine, designed, developed and produced by Oldsmobile, for use in the IRL IndyCar Series; from 1996 to 2001.^{[1][2][3][4][5][6]} It is a variant of the Northstar engine.

A twin-turbocharged version of this engine was used in the Cadillac Northstar LMP sports prototype race car.^{[7][8][9][10][11][12][13]}