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Discussion Starter · #1 ·
    • New 6.6L Duramax turbo diesel rated at 397 hp (296 kW) and 765 lb.-ft. of torque (1,037 Nm)
    • Segment-best diesel power complemented by up to 11-percent improved highway fuel economy and up to 63-percent reduced NOx emissions
    • Up to 680-mile (1,090 km) driving range with Duramax engine in pickups
    • Standard small-block 6.0L gas V-8 delivers 360 hp (268 kW)
PONTIAC, Mich. – Chevrolet’s new 2011 Silverado 2500HD and 3500HD pickups deliver the segment’s best diesel power. Their new, optional 6.6L Duramax turbo-diesel V-8 is rated at 397 horsepower (296 kW) at 3,000 rpm and 765 lb.-ft. of torque (1,037 Nm) at 1,600 rpm – an improvement of 32 horsepower (24 kW) and 105 lb.-ft. of torque (142 Nm) over last year’s engine.


“Segment-leading power is great, but it’s not the only thing that makes the new Duramax a winner,” said Gary Arvan, Duramax chief engineer. “We designed the engine to make that power with less fuel and fewer emissions, while also increasing its durability.”


A slightly different version of the 6.6L Duramax is offered in Silverado HD chassis and box-delete models. It is based on the same improved architecture and includes most of the same features as the pickup version, but is engineered to meet federal certification standards for incomplete vehicles, including the incorporation of a robust EGR system. It is rated at 335 horsepower (249 kW) at 3,100 rpm and 685 lb.-ft. of torque (928 Nm) at 1,600 rpm.


Among the 2011 6.6L Duramax turbo diesel’s new and enhanced features are:
  • Main bearing profiles changed to enhance oil film thickness
  • Oil pump flow increased for more pressure at low speeds
  • A revised turbocharger oil circuit for increased pressure at the turbo and faster oil delivery
  • Connecting rod pin ends modified to provide increased piston support
  • New, higher-strength piston design
  • A new 30,000-psi (2,000 bar) piezo-actuated fuel injection system – capable of operating on ASTM grade B20 biodiesel – ensures more precise fuel delivery, improving emission performance
  • An EGR cooler bypass reduces high-mileage soot deposits in the cooler and EGR circuit (pickup versions only).
The more powerful 6.6L Duramax is also more fuel-efficient – up to 11-percent greater highway fuel economy than the outgoing model – reduces NOx emissions by up to 63 percent and helps enable greater towing ratings. Silverado 3500HD equipped with a fifth wheel hitch can tow up to 20,000 pounds (9,072 kg). The increased fuel efficiency, combined with a new, 36-gallon (136 L) fuel tank, provides up to 680 miles (1,090 km) of highway driving between fill-ups.


With nearly 1.3 million Duramax diesel engines put into operation since its launch in 2000, no other automaker has as much diesel engine development experience for meeting the demands of the heavy-duty truck customer.


Strong small-block 6.0L V-8

The standard engine in Silverado HD trucks is the Vortec 6.0L small-block V-8, which is enhanced for 2011 with greater idle refinement. It is rated at 360 horsepower (268 kW) at 5,400 rpm and 380 lb.-ft. (515 Nm) at 4,200 rpm in Silverado 2500HD and 3500HD pickup models. In chassis cab and box-delete models, as well as pickups with a GVWR greater than 10,000 pounds, it is rated at 322 horsepower (240 kW) at 4,400 rpm and 380 lb.-ft. (515 Nm) at 4,200 rpm.


Approximately 90 percent of the Vortec 6.0L’s peak torque is available by only 2,000 rpm and excellent fuel economy is enabled by the engine’s low-friction OHV configuration and cam phasing. The state-of-the-art small-block architecture of the Vortec 6.0L – known commonly as the “LS” family – delivers great strength, smoothness and durability.


Whether equipped with the 6.6L Duramax or the small-block 6.0L, all 2011 Silverado models work under the best warranty coverage in America – a five-year/100,000-mile limited powertrain warranty, plus roadside assistance, courtesy transportation and other features that provide assurance that Chevrolet backs its trucks for everything the road offers.
 

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Hmm...Towing Max is 4,000 LESS than Ford SD.

This just doesn't have that 'in your face' bad to the bone toughness look that the new Super Duty has.
 

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Discussion Starter · #3 ·
Hmm...Towing Max is 4,000 LESS than Ford SD.

This just doesn't have that 'in your face' bad to the bone toughness look that the new Super Duty has.
Usually these trucks can tow way more than dealer specs. The problem is the skill to handle a truck with that much weight.

In my opinion, you cannot go wrong with either.


What I wonder is why GM cannot make the 6.2 400 hp 400 pound torques already available in the Silverado 1500 gasoline engine standard in this truck.

That Said, I love Ford styling. You got to look good doing what you do.
 

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I'll admit the GM trucks are more conservative in styling than the super duties but the engine specs from both trucks are truly amazing It should be a close match between these two. Styling wise the fords win but when it comes to overall engine performance it's a nearly equal affair with a slight nod to the general. I hope prices for both won't be too high. My dad was looking at a new truck to replace the venerable but aged 1993 GMC Sierra before deciding on the nox and the sticker shock was huge especially when compared to the price of a truck back in 1993 (the year he bought the Sierra)
 

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Discussion Starter · #5 ·
I would love to see this truck with a Z-06 motor.. Man...
 

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^ first imho, we ought to say thank you to Tahoe for::) TY


&
maybe it'd make sense down the line to either offer a SuperDuty "TITANIUM" edition to match the euro-RotW trim the cars will be getting
or just change "Platinum" to the tougher sounding "TITANIUM"?
bottom line, you cannot go wrong with either King ranch of Denali. These trucks are awesome, and expensive in HD. You can easily hit $60K
 
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