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The Northstar engine is a family of high-performance 90° V engines produced by General Motors between 1993 and 2011. Regarded as GM's most technically complex engine, the original double overhead cam, four valve per cylinder, aluminum block/aluminum head V8 design was developed by Oldsmobile R&D, [citation needed] but is most associated with Cadillac's Northstar series.
Emission requirements in the US state of California, which are frequently stricter than those in the rest of the country, required that all Corvettes sold there during the 1980 model year be fitted with a 180-horsepower 305 cu. in. "small-block" V8 engine with a 3-speed automatic transmission. This model of Corvette is particularly derided for ...
The 2.8 liter V6 was permanently removed from production after the 2010 model year due to safety recalls and poor sales. 3.0L V6 was the only engine option available for the 2011 model year. The 3.0L V6 was replaced by a 3.6L V6 engine for the 2012 model year as the only engine option available. [18] [19]
Year Engine Power Torque Standard Luxury I, II, III: 2006: 4.6 L Northstar LD8 V8: 275 bhp (205 kW; 279 PS) at 5200 rpm: 292 lb⋅ft (396 N⋅m) at 4400 rpm 2007–2008: 275 bhp (205 kW; 279 PS) at 6000 rpm: 295 lb⋅ft (400 N⋅m) at 4400 rpm Standard Luxury Premium: 2009–2011 Performance: 2006: 4.6 L Northstar L37 V8
Crews worked the rest of the day and into the night to detach the remaining 29 cars from the leaking railcar and to cool down the car by applying water to its tank.
The direct ancestors of the Cadillac Northstar V8 were the Olds-developed Quad 4 HO, from which the internal two-stage cam chain, the bore (minus 1 mm) and the stroke, and other structural features are very, very similar, and the Chevrolet LT-8, a 32-valve DOHC V8 designed with input and participation from Lotus and used exclusively as an ...
The engine was branded as the "Blackwing V8" by GM technicians, and is the first Cadillac-exclusive dual overhead cam V8 engine since the Northstar V8 was dropped in 2011. [1] Each engine is hand-built by a single technician at the Performance Build Center located inside the Corvette Assembly Plant in Bowling Green, Kentucky, and are marked ...
The engine for the Northstar LMP was based on a smaller 4.0 Liter variant of the Northstar used in Cadillacs, known as the L47, used in GM's Oldsmobile Aurora sedan. It had already been adapted for racing in 1995 for use in the Indy Racing League , but was thoroughly modified in order to not only increase power, but increase longevity.
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