GM Working On EcoBoost-Like Twin-Turbo V-6 For Cadillac XTS Flagship

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While Ford’s EcoBoost technology is nothing really revolutionary--direct injection and turbocharging has been available on European diesels for years--the Blue Oval has been making strides over the competition when it comes to the performance and efficiency of its new engines. EcoBoost essentially offers customers the performance of a big engine from relatively small displacement--and now, General Motors is hoping to get in on the act.

According to engineering sources, GM is developing a new 3.0-liter twin-turbo V-6 with direct injection. The new plant, which has been codenamed LF3, is an extensive of the naturally aspirated LF1 3.0-liter V-6 found in models like the 2010 Chevrolet Equinox and GMC Terrain.

Performance is said to be similar to Ford’s 3.5-liter EcoBoost V-6, which develops a peak output of 355 horsepower and 350 foot-pound of torque.

The first application of the new LF3 engine is rumored to be the upcoming Cadillac XTS flagship sedan, due to arrive in showrooms in late 2011 or early 2012. The engine, in varying guises, will eventually make its way across the rest of the Cadillac fleet as well as several other GM brands.

Late last year GM showed off the potential of a direct injected twin-turbo V-6 powerplant in a Chevrolet Camaro Concept that was developed together with comedian Jay Leno. Using the Camaro’s regular 3.6-liter V-6, engineers bolted on a pair of Turbonetics T-3 turbochargers pushing a mild seven psi of boost and managed to churn out 425 horsepower--matching the output of the 6.2-liter V-8 model.

[GM Inside News via TheCarConnection]

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Comments (6)
  1. Why use the 3 liter instead of the 3.6 which already has DI

  2. The 3 liter has more fuel efficiency and you only need so much horsepower. Maybe they'll offer the 3.6 in a high performance option with special handling package. GM is on the rise and clearly sees the need for efficiency at the top of their agenda! That Caddy has smooth lines! GM needs to offer affordable sedans under or at 20 g's to replace Pontiac's!

  3. "While Ford’s EcoBoost technology is nothing really revolutionary--direct injection and turbocharging has been available on European diesels for years..." Still playing catchup in 2010. Sounds like a great car, but the tech has existed for some time. B5 RS4 made 375hp with a 2.7l biturbo setup. I can only assume they will use this mill in other applications since no one can be sincerely concerned with mpg at this price point.

  4. Isn't this a day late and a dollar short?
    Ford already has employed this technology and GM is just starting? I mean, it's a great idea, but GM is pretty slow at moving this direction when Ford had working prototypes several years ago. Perhaps, instead or toying with the silly little 2 seat electric vehicle they should have been researching this and other means of making more efficient/powerful smaller engines which are more practice and marketable.

  5. dan aka 64chevyman, I checked out both engines, the smaller one does not seem much more fuel efficient then the larger.

  6. You the man then Denton cause those extra .6 liters may be the difference in rotating mass and revving ability once blown! This debate is key to GM's future cause they are finally a leader in fuel efficiency after a long head in the sand period.

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