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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.
The 4.2-liter V8 engine (GM RPO code LTA) is an eight-cylinder, dual overhead cam (DOHC) twin turbo engine produced by General Motors specifically for use in Cadillac luxury vehicles. The engine is the result of a new clean-sheet engine design as well as Cadillac's first twin-turbo V8 engine. It first launched with the 2019 Cadillac CT6. [10]
Engine choices included the 2.8-liter LP1 V-6, 3.6 LY7 V-6 and the 4.6-liter Northstar V-8 as in the STS V-8 [16] from 2007 to 2009. The 3.6 liter LLT engine was available from 2010 to 2011 until it was replaced by the 2.0 liter LDK and the 3.0 liter LF1 V6 for 2011 to 2013 models. 2010–2013 Cadillac SLS
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: 291 bhp (217 kW; 295 PS) at ...
This engine had a number of reliability issues, such as weak, porous aluminum block castings and failure-prone intake manifold gaskets. ... 4.6 L Northstar LD8 V8 4.6 ...
The Lucerne replaced the full-size LeSabre and the Park Avenue in the Buick range, and used a revised G platform, nonetheless referred to by GM as the H platform. [1]The Lucerne was introduced with the standard 3.8 liter Buick V6 (also known as the GM 3800 engine) or optional 4.6 liter Cadillac Northstar LD8 V8 as well as optional active suspension, marketed as Magnetic Ride Control.
Where the Chevrolet Corvette (C6) was powered by a 6.0L GM LS2 V8 engine and offered with a six-speed manual transmission, the XLR featured Cadillac's 4.6L Northstar V8 (supercharged in the XLR-V) and either a five-speed 5L50 automatic transmission, or a six-speed 6L80 automatic transmission. It produced 320 hp (239 kW) and 310 lb⋅ft (420 N ...
Engines must be available in regular-production vehicles on sale in the U.S. market no later than the first quarter of the year. Eligibility has also been based on availability in a vehicle below a base price limit, which increased progressively from US$50,000 for the 1995 list up to US$65,000 for the 2020 list; this limit was eliminated for ...