Gm's 2011 Hd Trucks - Power Numbers Revealed!

[C. Charles Hahn]

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.

 

D-Max > Powerstroke by 30 Ft-lbs. of torque... take that, Ford!

 

The enhanced 6.0L sounds pretty good too

[truckofwinandawesome]

GM is POISED to Corner the HD Truck Market!

[s-ten]

I must say that the numbers for the diesel are impressive. I was hoping that they would update the 6.0 a bit though.

[P71_CrownVic]

The best truck has won!!

[jro909]

my god both motors sound like a dream come true...anyone see how the cummins faired for 2011?

[Josh]

Just got done posting all the press releases on the home page.

 

There's a TON of info, so go check it out:

 

gm-trucks.com

[C. Charles Hahn]

Just got done posting all the press releases on the home page.

 

There's a TON of info, so go check it out:

 

gm-trucks.com

 

'Bout time you caught up!

 

[P71_CrownVic]

I hope GM pulls a Ford move and increases the capability numbers just to win the war on paper. Ford plays with dishonest capability numbers all of the time...no reason why GM can't.

[2005LT]

Wow those are some impressive numbers for the new Duramax! When my dad bought his 2003 new it came rated 300 hp and 520 lb-ft. They just keep moving the bar up.

 

He's got an edge juice at level 3 (the most they recommend you go even when not towing) which provides an estimated 375 hp and 720 lb-ft which still doesn't match the new numbers. That thing scoots too!

[P71_CrownVic]

Wow those are some impressive numbers for the new Duramax! When my dad bought his 2003 new it came rated 300 hp and 520 lb-ft. They just keep moving the bar up.

 

He's got an edge juice at level 3 (the most they recommend you go even when not towing) which provides an estimated 375 hp and 720 lb-ft which still doesn't match the new numbers. That thing scoots too!

 

Imagine what the new one would do when tuned.....

[Josh]

Just got done posting all the press releases on the home page.

 

There's a TON of info, so go check it out:

 

gm-trucks.com

 

'Bout time you caught up!

 

 

 

 

Sounds to me like your volunteering to help write for the front page?

http://www.gm-trucks.com/forums/index.php?showtopic=104069

[truckofwinandawesome]

Wow those are some impressive numbers for the new Duramax! When my dad bought his 2003 new it came rated 300 hp and 520 lb-ft. They just keep moving the bar up.

 

He's got an edge juice at level 3 (the most they recommend you go even when not towing) which provides an estimated 375 hp and 720 lb-ft which still doesn't match the new numbers. That thing scoots too!

 

Imagine what the new one would do when tuned.....

 

 

it would either go like a rocket, or you get new vents in the hood, fenders, and a new hood ornament!

[jro909]

i hope that new fluid dosen't cripple it too much...bet on how long it will take for people to want tunes to remove the program? that new 6.0 sounds like a nut buster, peak horse at 3k rpms...jesus