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]