Elfin cars pictures

elfin
elfin t5
elfin
Elfin Stream liner
Elfin Stream

Elfin cars pictures

elfin
elfin t5
elfin
Elfin Stream liner
Elfin Stream

New Cars 2011 Porsche 911 Carrera GTS

As standard, the Porsche 911 Carrera GTS has a six-speed manual gearbox and the seven-speed Porsche Doppelkupplungsgetriebe (PDK), is available as an option. Compared Carrera S. The upper speed GTS with manual transmission increases 2mph to 190 mph. In general, the acceleration from zero to 62mph is improving, 0.1 seconds; for GTS Coupé with PDK and Sport Chrono Package Plus Sport Plus mode, the source sprint takes only 4.2 seconds.

Special attention was paid to charge exchange in the 3.8-litre flat engine delivering 408 hp: In a special resonance intake manifold, six vacuum-controlled tuning flaps switch between power- and torque-optimized geometry whereas in a Carrera S power unit there is only one tuning flap. Thus, maximum torque of unchanged 420 Nm is already available at 4,200 rpm, 200 rpm earlier compared with the Carrera S. Add to that a sports exhaust system with two dual tailpipes. Their outer shells are painted in black and their inner tubes are polished on the outside and nano-coated.

Unique within the 911 Carrera family, the GTS combines the 44 millimetre wider body of the all-wheel drive Carrera 4 models – including widened rear track – with a classic rear-wheel drive configuration. The Porsche 911 Carrera GTS sits on 19-inch centre-locking RS Spyder alloy wheels, painted in black with high-gloss finished rims, with 235/35 ZR 19 tyres on the front axle and 305/30 ZR 19 tyres on the rear. Further features include the SportDesign front apron with spoiler edge painted in black, special side skirts also in black, and the Carrera GTS logotype on doors and rear lid, in black or silver depending on the body colour. The area between the two tailpipes on the rear apron is also finished in black.

The new Porsche 911 Carrera GTS will have its global debut at the 2010 Paris Motor Show on October 2 and goes on sale in the UK in December, priced from £76,758 for the Coupe and £83,493 for the Cabriolet.

New Cars 2011 Porsche 911 Carrera GTS

As standard, the Porsche 911 Carrera GTS has a six-speed manual gearbox and the seven-speed Porsche Doppelkupplungsgetriebe (PDK), is available as an option. Compared Carrera S. The upper speed GTS with manual transmission increases 2mph to 190 mph. In general, the acceleration from zero to 62mph is improving, 0.1 seconds; for GTS Coupé with PDK and Sport Chrono Package Plus Sport Plus mode, the source sprint takes only 4.2 seconds.

Special attention was paid to charge exchange in the 3.8-litre flat engine delivering 408 hp: In a special resonance intake manifold, six vacuum-controlled tuning flaps switch between power- and torque-optimized geometry whereas in a Carrera S power unit there is only one tuning flap. Thus, maximum torque of unchanged 420 Nm is already available at 4,200 rpm, 200 rpm earlier compared with the Carrera S. Add to that a sports exhaust system with two dual tailpipes. Their outer shells are painted in black and their inner tubes are polished on the outside and nano-coated.

Unique within the 911 Carrera family, the GTS combines the 44 millimetre wider body of the all-wheel drive Carrera 4 models – including widened rear track – with a classic rear-wheel drive configuration. The Porsche 911 Carrera GTS sits on 19-inch centre-locking RS Spyder alloy wheels, painted in black with high-gloss finished rims, with 235/35 ZR 19 tyres on the front axle and 305/30 ZR 19 tyres on the rear. Further features include the SportDesign front apron with spoiler edge painted in black, special side skirts also in black, and the Carrera GTS logotype on doors and rear lid, in black or silver depending on the body colour. The area between the two tailpipes on the rear apron is also finished in black.

The new Porsche 911 Carrera GTS will have its global debut at the 2010 Paris Motor Show on October 2 and goes on sale in the UK in December, priced from £76,758 for the Coupe and £83,493 for the Cabriolet.

bugatti veyron for sale bugatti veyron for sale

The top speed of the original version was verified by James May on Top Gear in November 2006, again at Volkswagen Group's private Ehra-Lessien test track. Jeremy Clarkson, driving a Veyron from Italy to London, noted that at top speed the engine consumes 10,000 imperial gallons (45,000 L) of air per minute (as much as a human breathes in four days). The Veyron accelerates from 0–60 mph in 2.5 seconds and has the fastest top speed of any street legal car. Once back in the Top Gear studio, James was asked by co-presenter Jeremy Clarkson what the Veyron felt like to drive at 407 km/h (253 mph), May replied that it was "totally undramatic", and very stable at speed.

German inspection officials recorded an average top speed of 408.47 km/h (253.81 mph)[5] during test sessions on the Ehra-Lessien test track on 19 April 2005. On 4 July 2010, Bugatti's official test driver Pierre Henri Raphanel piloted the Super Sport edition and was clocked at an average of 431.072 km/h (267.856 mph) on the same track, taking back the title of the fastest production vehicle of all time from the SSC Ultimate Aero TT. The 431.072 km/h mark was reached by averaging the Super Sport's two test runs, the first topping out at 265.96 mph (427.93 km/h) and the second at 269.86 mph (434.20 km/h). The record run was certified by the German government and the Guinness Book of World Records.

The car's everyday top speed is listed at 350 km/h (220 mph). When the car reaches 220 km/h (140 mph), hydraulics lower the car until it has a ground clearance of about 9 cm (3.5 in). At the same time, the wing and spoiler deploy. This is the handling mode, in which the wing helps provide 3,425 newtons (770 lbf) of downforce, holding the car to the road.[7] The driver must, using a special key (the top speed key), toggle the lock to the left of his seat in order to attain the maximum (average) speed of 407 km/h (253 mph). The key functions only when the vehicle is at a stop, when a checklist then establishes whether the car and its driver are ready to enable top speed mode. If all systems are go, the rear spoiler retracts, the front air diffusers shut and the ground clearance, normally 12.5 cm (4.9 in), drops to 6.5 cm (2.6 in).

bugatti veyron for sale
bugatti veyron for sale
bugatti veyron for sale
bugatti veyron for sale
bugatti veyron for sale

bugatti veyron for sale bugatti veyron for sale

The top speed of the original version was verified by James May on Top Gear in November 2006, again at Volkswagen Group's private Ehra-Lessien test track. Jeremy Clarkson, driving a Veyron from Italy to London, noted that at top speed the engine consumes 10,000 imperial gallons (45,000 L) of air per minute (as much as a human breathes in four days). The Veyron accelerates from 0–60 mph in 2.5 seconds and has the fastest top speed of any street legal car. Once back in the Top Gear studio, James was asked by co-presenter Jeremy Clarkson what the Veyron felt like to drive at 407 km/h (253 mph), May replied that it was "totally undramatic", and very stable at speed.

German inspection officials recorded an average top speed of 408.47 km/h (253.81 mph)[5] during test sessions on the Ehra-Lessien test track on 19 April 2005. On 4 July 2010, Bugatti's official test driver Pierre Henri Raphanel piloted the Super Sport edition and was clocked at an average of 431.072 km/h (267.856 mph) on the same track, taking back the title of the fastest production vehicle of all time from the SSC Ultimate Aero TT. The 431.072 km/h mark was reached by averaging the Super Sport's two test runs, the first topping out at 265.96 mph (427.93 km/h) and the second at 269.86 mph (434.20 km/h). The record run was certified by the German government and the Guinness Book of World Records.

The car's everyday top speed is listed at 350 km/h (220 mph). When the car reaches 220 km/h (140 mph), hydraulics lower the car until it has a ground clearance of about 9 cm (3.5 in). At the same time, the wing and spoiler deploy. This is the handling mode, in which the wing helps provide 3,425 newtons (770 lbf) of downforce, holding the car to the road.[7] The driver must, using a special key (the top speed key), toggle the lock to the left of his seat in order to attain the maximum (average) speed of 407 km/h (253 mph). The key functions only when the vehicle is at a stop, when a checklist then establishes whether the car and its driver are ready to enable top speed mode. If all systems are go, the rear spoiler retracts, the front air diffusers shut and the ground clearance, normally 12.5 cm (4.9 in), drops to 6.5 cm (2.6 in).

bugatti veyron for sale
bugatti veyron for sale
bugatti veyron for sale
bugatti veyron for sale
bugatti veyron for sale

Bugatti Veyron Super Sports Cars

The Veyron features an 8.0 litre W16 engine with sixteen cylinders in four banks of four, equivalent to two narrow-angle V8 engines mated in a W configuration. Each cylinder has four valves for a total of sixty four, but the narrow staggered eight configuration allows two overhead camshafts to drive two banks of cylinders so only four camshafts are needed. The engine is fed by four turbochargers and displaces 7,993 cubic centimetres (487.8 cu in), with a square 86 by 86 mm (3.4 by 3.4 in) bore and stroke. The official test driver Pierre Henri Raphanel and Adrien drove the Super Sport version of the Veyron on Volkswagen's Ehra-Lessien high-speed oval to establish the cars top speed. With representatives of the Guinness book of records and German Technical Inspection Agency (TÜV) on hand, Raphanel made passes around the big oval in both directions achieving an average speed of 431.072 km/h (267.856 mph).

The Super Sport features an engine power increase from the standard 1,001 metric horsepower (736 kW; 987 bhp) to 1,200 metric horsepower (883 kW; 1,184 bhp) and torque of 1,500 N·m (1,100 ft·lbf) and a revised aerodynamic package.

The first five production Super Sports will sport the same black and orange finish as the record car and all production models will be electronically limited to 415 km/h (258 mph) to protect the tyres.[4] The Veyron Super Sport was shown publicly for the first time at the Pebble Beach Concours d'Elegance in August 2010

Bugatti Veyron
Bugatti Veyron
Bugatti Veyron
Bugatti Veyron
Bugatti Veyron

Bugatti Veyron Super Sports Cars

The Veyron features an 8.0 litre W16 engine with sixteen cylinders in four banks of four, equivalent to two narrow-angle V8 engines mated in a W configuration. Each cylinder has four valves for a total of sixty four, but the narrow staggered eight configuration allows two overhead camshafts to drive two banks of cylinders so only four camshafts are needed. The engine is fed by four turbochargers and displaces 7,993 cubic centimetres (487.8 cu in), with a square 86 by 86 mm (3.4 by 3.4 in) bore and stroke. The official test driver Pierre Henri Raphanel and Adrien drove the Super Sport version of the Veyron on Volkswagen's Ehra-Lessien high-speed oval to establish the cars top speed. With representatives of the Guinness book of records and German Technical Inspection Agency (TÜV) on hand, Raphanel made passes around the big oval in both directions achieving an average speed of 431.072 km/h (267.856 mph).

The Super Sport features an engine power increase from the standard 1,001 metric horsepower (736 kW; 987 bhp) to 1,200 metric horsepower (883 kW; 1,184 bhp) and torque of 1,500 N·m (1,100 ft·lbf) and a revised aerodynamic package.

The first five production Super Sports will sport the same black and orange finish as the record car and all production models will be electronically limited to 415 km/h (258 mph) to protect the tyres.[4] The Veyron Super Sport was shown publicly for the first time at the Pebble Beach Concours d'Elegance in August 2010

Bugatti Veyron
Bugatti Veyron
Bugatti Veyron
Bugatti Veyron
Bugatti Veyron

Aston Martin One-77 Engine in The World's Strongest

Luxury car maker Aston Martin to claim their exotic supercars One-77 is a car with a powerful engine in the world. Cars Aston Martin One-77 new generation will be launched next year.

Aston Martin One-77's latest effort is claimed capable of spraying up to 750 hp and they think is the most powerful class.

British carmaker claims is certainly surprising. For the fastest production car today, Bugatti Veyron already has a staff of more than 1000 hp.

Even muscle cars American, Ford Mustang Shelby Super Snake the GT 500 in 2011 alone was able to reach up to 800 personnel mob.

Aston Martin One-77 alone has the power for it from a capacity of 3.7 liter V12 engine capable of spraying 750 bhp power with 553 lb-ft of torque. The figure is claimed to be greater than the Pagani Zonda Cinque supercar is powered 681 bhp or even Pagani Zonda R is exclusively used in the circuit.

And despite the crazy relative worth, ie, reaching 1.2 million pounds or approximately USD 16.7 billion trust Aston Martin One-77 unit 77 which will make them back it will be sold out sold.

"One-77 has now closer to reality for manufactured and of course there is considerable joy in these projects. Now next step is to conduct all details to complete the repairs and composition. I know at the end of this car will show what the Aston Martin team able to create , "said CEO Dr Ulrich Bez Aston Martin in Aston Martin's official website on Wednesday (22/09/2010).

Shipping a car is by Ulrich Bez will begin in 2011. And now at least 100 millionaires already lining up to get the most luxurious car is Aston Martin.

One is the rich buyers from the Middle East. Amazingly, he bought 10 units at once.

Aston Martin One-77 Engine in The World's Strongest

Luxury car maker Aston Martin to claim their exotic supercars One-77 is a car with a powerful engine in the world. Cars Aston Martin One-77 new generation will be launched next year.

Aston Martin One-77's latest effort is claimed capable of spraying up to 750 hp and they think is the most powerful class.

British carmaker claims is certainly surprising. For the fastest production car today, Bugatti Veyron already has a staff of more than 1000 hp.

Even muscle cars American, Ford Mustang Shelby Super Snake the GT 500 in 2011 alone was able to reach up to 800 personnel mob.

Aston Martin One-77 alone has the power for it from a capacity of 3.7 liter V12 engine capable of spraying 750 bhp power with 553 lb-ft of torque. The figure is claimed to be greater than the Pagani Zonda Cinque supercar is powered 681 bhp or even Pagani Zonda R is exclusively used in the circuit.

And despite the crazy relative worth, ie, reaching 1.2 million pounds or approximately USD 16.7 billion trust Aston Martin One-77 unit 77 which will make them back it will be sold out sold.

"One-77 has now closer to reality for manufactured and of course there is considerable joy in these projects. Now next step is to conduct all details to complete the repairs and composition. I know at the end of this car will show what the Aston Martin team able to create , "said CEO Dr Ulrich Bez Aston Martin in Aston Martin's official website on Wednesday (22/09/2010).

Shipping a car is by Ulrich Bez will begin in 2011. And now at least 100 millionaires already lining up to get the most luxurious car is Aston Martin.

One is the rich buyers from the Middle East. Amazingly, he bought 10 units at once.

2011 Chevrolet Silverado Heavy-Duty Facelift Debuts in Chicago

2011 Chevrolet Silverado Heavy-Duty Facelift – 10.02.2010
Chevy introduced the facelifted 2011 Chevrolet Silverado Heavy-Duty at the Chicago Auto Show this week. The truck’s new exterior features include a sleeker front chrome bumper, power dome-style hood, and new grille.
According to statements from the automaker, the engineering and design teams focused on 11 different points to improve the vehicle. Changes include rebuilt frames that are now stiffer than they had been. The new frames support as much as 16,000 lbs, with the new front suspension supporting as much as 6,000 lbs on the front axle. Remodeled, wider leaf-spring rear suspension can take another 6,200 to 7,050 pounds with single wheel configuration, or a much stronger 9,375 pounds with dual rear-wheels, a 14% improvement. The truck is capable of towing 16k lbs on a ball hitch, or 20,000 lbs with a fifth-wheel.
Also retuned is the diesel 6.6-liter Duramax engine estimated to be stronger and more powerful with reduced emissions. The result is a 0-60mph time of under nine seconds. Larger brakes, exhaust braking, and an improved ride round out the package along with more safety features and a more comfortable cab.
The 2011 Chevrolet Silverado 2500HD and 3500HD will hit the market this summer. You can read more about the vehicle in the press release below.
Press Release (Click to expand)
2011 Chevrolet Silverado Heavy-Duty Trucks At A Glance
Segment-best towing (20,000 lb / 9,072 kg) and payload (6,335 lb / 2,873 kg) supported by all-new frames and strong suspensions for maximum capability
Class-leading torque, class-leading fuel economy with up to 63-percent lower emissions and quicker acceleration with new 6.6L Duramax diesel mated to new Allison 1000 six-speed automatic transmission
B20 biodiesel capable
All-new exhaust brake system for greater feeling of control and reduced brake pad wear
Comprehensive set of confidence- and control-related features, including trailer sway control, integrated trailer brake control, hill start assist, automatic grade braking and intelligent brake assist
Bold and new exterior design features louvered hood, front bumper, grille and 20-inch wheels
Extended cab models feature 170-degree-opening rear access doors for unobstructed access to the interior
Purposeful technology, including available mobile WiFi, USB connectivity, Bluetooth connectivity, XM Satellite Radio, OnStar 9.0 and navigation
Goes on sale this summer
BRING IT ON – 11 WAYS THE NEW 2011 CHEVROLET SILVERADO HEAVY-DUTY TRUCKS PROVE THEY’RE READY FOR ANY JOB OR COMPETITOR
CHICAGO – On a recent validation drive of the new, 2011 Chevrolet Silverado heavy-duty trucks, engineer Brent Deep towed a 20,000-pound (9,072 kg) trailer for 245 miles (400 km) along I-70 between Denver and Grand Junction, Colo. – and he barely touched the brakes the entire way.
Deep relied on the Silverado’s new, smart exhaust brake system to slow the truck/trailer combination on descents, helping prove the new system is suitable for the most demanding conditions. It was a drive across the heart of the Rocky Mountains and some of the interstate system’s steepest grades, with altitudes ranging from Denver’s approximately 5,000 feet (1,525 m) to more than 11,100 feet (3,400 m) at the Eisenhower Tunnel.
“It takes some courage to leave your foot off the brake, but the Silverado’s Duramax engine and Allison transmission perform the task with smoothness and confidence that really impresses,” said Deep. “Better still, the exhaust brake system can help extend brake pad life and help avoid overheating the brakes on long descents.”
The exhaust brake system feature is just one of the elements that makes the new 2011 Silverado 2500HD and 3500HD models the most capable in the industry. They go on sale this summer.
“We sought the input of our customers during the development of the 2011 Silverado HD to deliver a truck that meets or exceeds their every need,” said Jim Campbell, Chevrolet general manager. “It offers greater strength and capability – including class-leading fuel economy, trailering and payload ratings – and has more power, accelerates quicker and has lower emissions. That sounds like the very definition of no compromises.”
The Silverado heavy-duty lineup is broader than ever, with 11 2500HD models and eight single- and dual-rear-wheel 3500HD models – including a new 3500HD Crew Cab with a 6.5-foot cargo box. WT, LT and LTZ trim levels are offered, and popular features such as the EZ Lift tailgate and rearview camera system return. All models bring greater capability, improved ride and handling and a greater feeling of driver control. Depending on the model:
Segment-best fifth-wheel towing capacity of 20,000 pounds (9,072 kg)
Segment-best conventional towing capacity increases up to 23 percent, with a maximum of 16,000 pounds (7,272 kg)
Segment-best payload capability of 6,335 pounds (2,873 kg) on a complete vehicle
Segment-best Gross Combined Weight Rating increases to 27,500 pounds (12,500 kg)
Gross Vehicle Weight Ratings increases up to 17 percent to 13,000 pounds (5,909 kg)
Front Axle Weight Rating increases by up to 25 percent to 6,000 pounds (2,721 kg)
Snow plow capability is now enabled for all 4WD cab configurations
There are also enhanced powertrains, including a new Duramax 6.6L diesel/Allison 1000 six-speed transmission that offers the exhaust brake system, new front and rear suspensions, an improved brake system, hill start assist, trailer sway control system and more.
“Along with all their heavy-duty equipment, these trucks are designed to be stylish and refined, inside and out,” said Campbell. “We paid close attention to all the details, giving them a distinctive, muscular appearance on the exterior and a well-appointed interior with the comfort, convenience and safety features customers appreciate.”
Outside, the 2011 Silverado 2500HD and 3500HD models are distinguished by a power dome-style hood with a new, louvered design, as well as a new grille and full-width chrome steel front bumper. A new lineup of 17-, 18- and 20-inch wheel/tire combinations is featured, too (20-inch polished forged aluminum wheels are available on 2500HD).
Designers and engineers left almost no bolt unturned during the comprehensive redesign of the trucks. Here are 11 key elements that demonstrate the 2011 Silverado 2500HD and 3500HD are ready for any job and any competitor:
1. New frames
In the quest to comprehensively redesign the Silverado HD chassis to improve durability and ride, while also supporting increased capability, engineers developed 11 all-new, fully boxed frame assemblies. The frames have increased cross sections and use more high-strength steel for greater durability, higher towing capacity and improved ride and handling; the front sections are hydroformed.
The bending and beaming stiffness of the frames is increased 92 percent and 20 percent, respectively, with the fully boxed sections enhancing torsional stiffness by a factor of five. Also, larger engine and transmission mounts, coupled with a 125-percent-stiffer front frame structure, provide greater vibration control, while hydraulic body mounts are incorporated under the cab section on extended and crew cab models for a more isolated feel inside.
Engineers addressed common customer and aftermarket uses when designing the new frames, including adding access holes to the rear frame section to enable easier installation of fifth-wheel/gooseneck-style hitches. Also, the frame-mounted hitch for conventional trailering is stronger, with a box-tube design. It supports up to 16,000 pounds (7,257 kg).
2. New and strong independent front suspension
A completely redesigned independent front suspension system offers up to a 25-percent greater front axle weight rating – up to 6,000 pounds (2,721 kg) front gross axle weight rating (FGAWR) – enabling a snow plow to be used on all 4WD cab configurations with the available snow plow prep package, while also supporting improved ride and handling characteristics.
Silverado’s signature short-long arm/torsion bar front suspension design is retained, but now features new, forged steel upper control arms that are stronger and lighter than their predecessors. The new lower control arms are made of precision-machined cast iron to handle the greater loads. Five different torsion bar rates support five different front gross axle weight ratings (a single torsion bar was previously used for all models). This helps stabilize the range of trim heights of various models under load, while enhancing appearance, handling, durability, tire wear and alignment. The trim height is adjusted on each bar via a single bolt, easily allowing the height to be changed to account for the weight of a snow plow or other accessories.
The Silverado HD front suspension now uses a pair of urethane jounce bumpers on each side, instead of one, for improved load management; and there’s a new upper shock mount attachment design that’s positively connected to the frame with two fasteners. This design eliminates squeaks and clunks, while supporting higher load capability and increased durability.
Compared to competitors’ beam-axle front suspension, the Silverado’s independent front suspension provides a better ride, more accurate trim height control (with fewer parts) and greater flexibility to adjust the alignment for weight and tire sensitivity.
3. New asymmetrical leaf-spring rear suspension
Commensurate with the Silverado HD’s greater strength and capability is a rear suspension designed to support greater loads. It features a new, larger asymmetrical leaf-spring design that also contributes to improved ride and handling characteristics.
The asymmetrical design is derived from unequal front and rear spring half lengths, which minimize axle hop and enhance traction control efficiency. 2500HD models feature a two-stage leaf-spring design, while 3500HD models have a three-stage design. All models feature 3-inch-wide (76 mm) leaf springs that are 20-percent wider than previous models.
The larger leaf-spring design supports increased rear gross axle weight ratings across the board. On the 2500HD models, the rating is 6,200 pounds (2,818 kg) – up from 6,084 (2,765). On 3500HD models, the rating increases to 7,050 pounds (3,204 kg) on single-rear-wheel models and 9,375 pounds (4,261 kg) on dual-rear-wheel models – the latter representing a nearly 14-percent increase over the previous 8,200-pound (3,727 kg) rating.
4. Segment-leading towing and payload capability
Stronger frames, suspension systems with greater weight ratings and enhanced powertrain systems contribute to the Silverado HD’s class-leading towing and payload capability. The specifications charts included below outline capacities for each model and/or configuration, but here are the key facts:
The maximum conventional (ball hitch) towing rating increases to 16,000 pounds (7,257 kg)
A Silverado 3500HD crew cab/long box can tow up to 20,000 pounds (9,091 kg) with a fifth-wheel hitch. The 2010 Ram 3500 has a maximum rating of 17,600 pounds (8,000 kg) and the 2010 Ford F-350 is rated at a maximum of 18,800 pounds (8,545 kg). It should be noted that while Ford claimed segment-leading trailering and payload during its recent announcement of the 2011 Super Duty models, no towing ratings were issued
The maximum payload (3500HD) is 6,335 pounds (2,873 kg) – that’s nearly 11 percent greater than the 2010 Ford F-350’s 5,730-pound (2,604 kg) rating and about 24 percent more than the 2010 Ram 3500’s 5,130-pound (2,331 kg) ratings. Again, while claiming segment-leading payload for the 2011 Super Duty models, Ford did not announce the ratings
5. New 6.6L Duramax diesel and Allison 1000 six-speed combination
Helping the new 2011 Silverado HD trucks deliver their best-in-class capabilities is a new version of the workhorse Duramax 6.6L diesel and Allison 1000 six-speed automatic transmission powertrain combination. The Duramax 6.6L is more powerful and durable and the Allison 1000 is stronger and helps enable new features, including the exhaust brake system. Together, this improved version of a proven combination is also expected to deliver segment-best fuel economy.
The Duramax 6.6L’s new and improved features include:
Horsepower and torque expected to top previous model (testing is ongoing – check media.gm.com for updates)
NOx emissions reduced at least 63 percent over 2010 models
Quieter operation
High-pressure (30,000 psi/2,000 bar) Piezo-actuated fuel system for greater fuel efficiency, improved performance and reduced emissions
Exhaust brake system that enables controlled vehicle slowdown on downhill grades without actuating the brakes
Selective catalytic reduction after-treatment system using diesel exhaust fluid (DEF) injection to provide the best overall diesel characteristics and performance – with a range of about 5,000 miles (8,000 km) between DEF refills
Combustion and after-treatment have been optimized to provide about 700 miles (1,125 km) between diesel particulate filter regenerations – a 75-percent improvement over the previous system and significant contributor to improved fuel efficiency, as the regeneration process requires additional fuel
B20 biodiesel capability for an alternative fueling option
Internal revisions that improve durability
With nearly 1.3 million Duramax 6.6L engines produced since 2000, they have proven exceptionally durable and dependable. The internal elements that helped build its reputation are enhanced for 2011, including:
Main bearings’ profiles changed to enhance oil film thickness
Oil pump flow increased for increased pressure at low speeds
The turbocharger’s oil circuit is changed to provide increased pressure at the turbo and faster oil delivery
The connecting rods’ pin ends are modified to provide increased piston support
New, higher-strength piston design that eliminates bushings to provide lower reciprocating weight
An EGR cooler bypass reduces high-mileage soot deposits in the cooler and EGR circuit
The enhanced Allison 1000 for 2011 is strengthened to handle the higher torque capability of the new 6.6L Duramax engine, while also helping improve fuel economy and provide seamless assistance with a new exhaust brake system. Greater efficiency is delivered through reduced “spin loss” – meaning, the transmission channels more of the engine’s power to the axles, allowing it to do more with less fuel.
The Allison 1000 also features driver shift control with tap up/tap down shifting and a patented elevated idle mode cab warm-up feature. Also, the tow/haul mode reduces shift cycling for better control and improved cooling when towing or hauling heavy loads. The six-speed configuration retains its two overdrive gears for optimal efficiency.
Performance with the Duramax/Allison combination is also improved over previous models, with preliminary testing showing 0-60 mph times of less than 9 seconds and quarter-mile times of less than 16 seconds in 2500HD models. That’s about 0.3-second and 0.5-second quicker, respectively, than previous models.
6. Strengthened Vortec 6.0L/Hydra-Matic 6L90 six-speed powertrain
The venerable Vortec 6.0L gas V-8 with variable valve timing returns to the new heavy-duty trucks, along with a strengthened version of the Hydra-Matic 6L90 six-speed automatic transmission. This combination delivers excellent performance and efficiency, with a greater emphasis on low-rpm power.
A new camshaft profile in the Vortec 6.0L helps the engine produce more torque lower in the rpm band, for improved launch feel and a greater feeling of overall performance at higher altitudes and when towing a trailer.
The 6L90 is enhanced for greater strength, smoothness and quietness via:
Adding four attachment bosses to the transfer case adapter (4WD models) for increased strength and smoother, quieter performance
Increasing the cross section size of the transfer case adapter for greater strength
Adding a new, stronger output shaft
Adding a new heat shield and vent hose
7. Exhaust brake system
A new feature on Duramax-equipped models is an exhaust brake system. This driver-selectable feature uses the turbine control of the variable geometry turbocharger and the compression of the engine to generate backpressure, slowing the vehicle without applying the brakes. It is a smart system integrated with the cruise control feature and varies the braking to account for the grade and vehicle load.
The exhaust brake system allows for virtually effortless driving and towing, with seamless and quiet operation. It also helps prolong brake life and prevents overheating the brakes on long, downhill grades.
8. Large brakes
Brake feel and performance is greatly improved with the 2011 Silverado HD trucks. The standard four-wheel disc system is completely revamped to deliver smoother, more immediate and confident-feeling performance. Four-wheel, four-channel ABS is standard on all single-rear-wheel models and a three-channel system is standard on dual-rear-wheel models.
The front and rear rotors are larger in diameter – 14 inches (355 mm) – and width on all models to support their increased capacity, weight ratings and trailering ratings, while the calipers are stiffer and stronger. The hydroboost brake booster calibration is revised for reduced pedal effort and the travel of the pedal is also revised for a more comfortable, confident feel.
Larger wheel hub and bearing assemblies complement the new brake system and the rear rotors attach to the wheel hubs for easier servicing.
9. Refined and capable ride, handling and steering
Longer wheelbases – ranging from 133.6 inches (3,395 mm) to 167.7 inches (4,259 mm) – and wider front/rear tracks enhance the ride and handling characteristics of the Silverado 2500HD and 3500HD, giving them a greater feeling of smoothness and control.
The longer wheelbases and wider tracks are complemented by the new, stiffer frames, new jounce bumpers, shock mounts and hydraulic body mounts to provide a solid, smooth and isolated driving experience. New shocks were specially valved to support the new trucks’ weight ratings, while balancing excellent ride characteristics.
Also enhancing the driving experience is a revised steering system designed to support the trucks’ greater front gross axle weight rating. It includes a new, larger steering gear, power steering pumps and linkages. The pumps (different parts for gas and diesel models) deliver greater pressure for reduced steering effort in low-speed and parking maneuvers; they are also quieter. On some models, the new linkages feature a compliant joint added at the pitman attachment to enhance handling.
10. Comprehensive safety and functional technology
The 2011 Silverado 2500HD and 3500HD models have a comprehensive roster of safety features and functional technologies that include:
StabiliTrak electronic stability control system on all single-rear-wheel models
Larger, four-wheel disc brakes with standard four-wheel ABS
A new high-strength steel tubular frame cross member that enhances safety and improves crashworthiness
Seat pelvic/thorax and head curtain side air bags available on 2500HD
Available rear backup camera
Segment-exclusive OnStar 9.0
Trailer sway control system on all single-rear-wheel models
Hill start assist (standard on single-rear-wheel models)
Trailer sway control system provides an added measure of confidence when towing a trailer. The system senses conditions of trailer sway and intervenes with braking and/or reduced engine power to bring the trailer under control and keep it on its intended path. The system will use electric trailer brakes when a trailer is plugged into the standard wiring harness of the truck and its performance requires no input from the driver.
The hill start assist system is automatically engaged when sensors detect the vehicle is on grade of about 5 percent or greater. It holds the brakes for about 1.5 seconds or until the gas pedal is pressed, preventing rollback – it is particularly effective when towing, giving the driver time to switch from the brake pedal to the gas pedal without rolling.
11. Lives bigger, drives better, works harder
From the available remote starting feature to the unimpeded access offered by the 170-degree-opening rear access doors on extended cab models, the 2011 Silverado HD models live bigger, drive better and work harder. The interiors are refined, with improved quietness and attention to detail, but designed for working. Numerous storage compartments provide covered access for everything from work gloves to laptops.
Indeed, for many owners the Silverado HDs are mobile workspaces, offering mobile WiFi, USB connectivity, Bluetooth connectivity, XM Satellite Radio and a navigation system. Multiple charge points enable multiple electronic devices to operate simultaneously; and when equipped with the available navigation system, XM NavTraffic offers real-time updates of traffic conditions (in selected areas) that can help plan the most effective route to the job site.
Cold-weather customers will appreciate the Duramax 6.6L’s quick, reliable start-up, with a starting time on par with gas engines. Its glow plug cycle time is the segment’s best in all temperatures, taking no more than 3 seconds in temperatures as low as -20 F (-29 C). There’s also a cab heat-up feature that allows the engine to idle faster in low temperatures to warm up the interior faster.
And when you’re on the road, the Silverado HDs take you farther without stopping. A new, 36-gallon (136 L) fuel tank is standard on all models and, with the improved fuel efficiency of the powertrains, enables a cruising range of up about 680 miles (1,090 km) with the Duramax 6.6L. That’s the equivalent of a trip from Houston to Oklahoma City and back to Dallas on a single tank.
Finally, all 2011 Silverado 2500HD and 3500HD trucks work under the best warranty coverage in America – five-year/100,000-mile limited powertrain warranty, plus roadside assistance, courtesy transportation and other features that provide assurance that Chevrolet backs its trucks confidently.