GM's New 4.5 liter Duramax turbo-diesel V8

[AG4]

-autoblog

PONTIAC, Mich. - General Motors Corp.'s revolutionary new 4.5L V-8 Duramax turbo-diesel, which makes its debut in Chevrolet Silverado and GMC Sierra light duty trucks in the 2010 model year, is compact, powerful and fuel-efficient. The engine also is lighter, an important consideration in the competitive light truck market, because it was designed with more than 70 fewer parts.

The new dual-overhead cam, four-valve V-8 diesel engine boasts a number of innovative design approaches that have enabled its compact size and mass, including integral aluminum cylinder head exhaust manifolds, integral cam cover intake manifolds and a narrow V-angle block. The new V-8's compact size enables it to fit within the same space of a small-block V-8 gasoline engine and offers GM the flexibility to introduce it in a wide variety of vehicles to meet market demand.

The new 4.5L V-8 diesel is expected to deliver more than 310 horsepower (231 kW) and 520 lb-ft of torque (705 Nm), while delivering a 25-percent engine fuel efficiency improvement versus comparable gasoline engines.

Full article and press release: http://www.autoblog.com/2008/05/05/g...rbo-diesel-v8/

[isketi]

Did they develop this on their own or in cooperation with Isuzu?

[redorange]

It was developed by GM w/o Isuzu's help it's just the Duramax name that is the same.

[GTi]

If they put that engine in the Suburban/Tahoe duo in the Philippine Market, it might attract many customers who like the ride quality and gravitas these American SUVs provide but hate the extremely poor fuel economy trade-off. With this engine, it can compete very well with the Landcruiser.

[userfriendly]

The new 4.5L V-8 diesel is expected to deliver more than 310 horsepower (231 kW) and 520 lb-ft of torque (705 Nm), while delivering a 25-percent engine fuel efficiency improvement versus comparable gasoline engines.

So does this mean that instead of 4 km/L you get 5 km/L

1 km/L fuel savings whoooo :groupwave: I'm saving lots of money

[agent_ysann]

old news (year 2007), but i want to share it...
reference: http://www.seriouswheels.com/cars/20...Z71-Diesel.htm

[SIZE=2](from General Motors Press Release)[/SIZE][SIZE=2] The Chevy Suburban HD Z71 is the culmination of a “what if” exercise that melds the popular Suburban 2500HD with the popular Z71 off-road package – a combination not currently offered by the factory – and partners it with a new, fuel-saving smaller-displacement diesel engine. The concept uses many production parts, including the front-end assembly from Chevy’s HD trucks, along with some unique custom touches – including rear wheel flares that pick up the styling cues of the front end. Power is generated by a new 4.5L diesel engine that gives this off-road-ready Suburban power, poise and efficiency. [/SIZE]
[SIZE=2][/SIZE]
[SIZE=2]Vehicle highlights: [/SIZE]

• [SIZE=2]Suburban 2500HD Z71 [/SIZE]
• [SIZE=2]Silverado HD front-end assembly [/SIZE]
• [SIZE=2]Z71 running boards [/SIZE]
• [SIZE=2]Custom rear wheel flares [/SIZE]
• [SIZE=2]New 4.5L diesel engine [/SIZE]
• [SIZE=2]New rear axle [/SIZE]
• [SIZE=2]Chrome tow hooks [/SIZE]
• [SIZE=2]Custom interior touches [/SIZE]

[SIZE=2]GM Accessories features (production and concept): [/SIZE]

• [SIZE=2]Twenty-inch wheels (concept) [/SIZE]
• [SIZE=2]Chrome hood louvers [/SIZE]
• [SIZE=2]Fuel door (concept) [/SIZE]
• [SIZE=2]Roof rack (concept) [/SIZE]
• [SIZE=2]Trailer hitch close-out [/SIZE]
• [SIZE=2]Two-way remote start[/SIZE]

[SaberRider]

Man, they just threw out the efficiency of the diesel engine. They're still in the same old American idea that "bigger is better". This will not save GM. They'd better declare bankruptcy.

I doubt that will even sell in the US market since most gas stations don't even carry diesel.

In Europe there are 1.8L 4 banger turbo-diesel engines pumping out 200+hp while still being very fuel efficient, more efficient than a hybrid in fact.