The Omega Ω is a V8 engine produced by Hyundai Motor Company. It is a dual overhead cam design with electronic multiport fuel injection or gasoline direct injection.

GDi

4.5L (G8AA)

The G8AA (also called the 4.5D) displaces 4.5 L (4498 cc) with a 86 mm bore, 96.8 mm stroke and a 10.7:1 compression ratio. Output is 260 PS at 5,500 rpm and 38.8 kgm of torque at 3,500 rpm. The dry weight of the engine is 236 kg.

MPi

4.5L (G8AB)

The G8AB displaces 4.5 L (4498 cc) with a 86 mm bore, 96.8 mm stroke. Output is 270 PS at 5,500 rpm and 38 kgm of torque at 4,500 rpm or 268 PS at 5,500 rpm and 37.6 kgm of torque at 4,000 rpm.