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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 6L 50 debuted for the 2007 model year on the V8-powered versions of the Cadillac STS sedan and Cadillac SRX crossover, and replaces the 5L40-E and 5L50 in GM's lineup. The 6L 45 version is used in certain BMW vehicles and the Cadillac ATS , as part of either rear-wheel drive and all-wheel drive powertrains.
The Cadillac STS-V is a high-performance executive car of the V-Series introduced at the 2005 Detroit Auto Show, and was available for sale in late 2005. The STS-V uses a supercharged 4.4 L version of the Northstar V8, producing 469 hp (350 kW) and 439 lb⋅ft (595 N⋅m).
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]
The 4T80-E is a hydramatic transmission and was developed for use with V8 front-wheel-drive cars, and at the time exclusively the Cadillac Northstar engine. [3] It was designed with extreme power handling capabilities at the time. The 4T80-E debuted in the Cadillac Allanté in 1993 along with the Northstar Double Overhead Camshaft (DOHC) V8.
A Cadillac Sedan DeVille, one of the models offered with the V8-6-4 engine. For the 1981 model year only, Cadillac offered a feature on its V8 engine called the V8-6-4. On this engine, up to four cylinders could be deactivated while cruising to save fuel.
This engine debuted on the 2008 Cadillac STS and CTS. [8] [9] GM used an LLT in all 2009–2017 Lambda-derived crossover SUVs to allow class-leading fuel economy in light of the new Corporate Average Fuel Economy (CAFE) standards. In these crossovers, the LLT engine produced up to 288 hp (215 kW; 292 PS) and 270 lb⋅ft (366 N⋅m) of torque.
Cadillac's new 368 cu in (6.0 L) L62 V8 with Digital Fuel Injection was a no-cost option except in California, where the fuel-injected Oldsmobile 350 remained available as a no-cost option. [ 14 ] 1985 Seville rear, two-tone with aftermarket fake spare wheel feature 1984 Cadillac Seville (front)