Oldsmobile Aurora engine
Northstar is Cadillac's name for its DOHC V8 engine. This engine was sold exclusively by Cadillac for over a decade before being introduced in the Pontiac Bonneville for 2004. Cadillac is planning to introduce a V12 Northstar this decade. The engine was introduced with the 1992 Cadillac Allante and continues to be used in the Cadillac STS, Cadillac SRX, and Cadillac XLR.
The Northstar features Dual-Overhead Cams, Variable Valve Timing, and other modern technologies. The VVT system can vary intake by up to 40° and the exhaust by up to 50°. Most Northstar engines produce 300 to 320 hp (224 to 239 kW). The engine displaces 279 in³ (4645 cc) from a 3.66 in (93 mm) bore and 3.31 in (84 mm) stroke. The engine got a forged steel crankshaft in 2003. The block can be expanded up to 5.4 L though no such engine has been produced.
LD8
The LD8 is a transverse V8 for front wheel drive cars.
Vehicles using the LD8 include:
L37
The L37 is a higher-output version of the LD8.
Vehicles using the L37 include:
LH2
The Northstar was designed for transverse front wheel drive applications. It was modified substantially in 2004 for longitudinal rear- and all wheel drive use in the SRX and XLR. The RWD (LH2} Northstar is good for 315hp (235kW) and 310ft.lb (420Nm).
Vehicles using the LH2 include:
L47
The L47 Aurora engine was a special V8 designed for the Oldsmobile Aurora, based on the Cadillac Northstar engine. It is a DOHC 4.0 L (3995 cc) V8 which produced 250 horsepower (186 kW) and 260 ft.lbf (353 Nm) of torque. The bore is 87 mm and the stroke is 84 mm. GM later cut two cylinders off to form the 3500 V6 family.
General Motors has not used this engine since the demise of the marque in 2004.
