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Car Forum / Dodge / Dodge Trucks / September 2005

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Dodge Ram Cummins Diesel Killer

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bwwicfal@hotmail.com - 19 Sep 2005 17:06 GMT
As usual, Max was WRONG!!!! The Duramax diesel is STILL going strong
after several years of PROVEN reliability.

2006 Duramax 6600 Turbodiesel to Deliver Class-leading Torque in a More
Powerful and Refined Package

Engine output for Chevy Silverado HD and GMC Sierra HD increased to 360
horsepower and a class-leading 650 lb-ft of torque

New glow-plugs reduce start time by as much as 50 percent

PONTIAC , MICH. â€" Later this year, GM Powertrain will introduce
a new 6.6L Duramax 6600 turbodiesel V-8 (RPO LBZ) for the 2006 model
year Chevy Silverado HD and GMC Sierra HD with class-leading horsepower
â€" 360 (268 kw) at 3200 rpm and class-leading torque, at 650
lb.-ft. (881 Nm) at 1600 rpm. In addition to the power increase in the
Silverado and Sierra, all 2006 Duramax engines have been significantly
revised to deliver lower emissions and significantly improved quietness
and smoothness in every application.

The 2006 Silverado HD and Sierra HD with the Allison 6-speed automatic
transmission will be equipped with a significantly revised 310
horsepower Duramax 6600 (LLY) through the third quarter of 2005. It
will be replaced in these applications in the fourth quarter of 2005,
by the higher output, 360-horsepower Duramax (LBZ).

“The introduction of the Duramax diesel in 2001 represented a
significant evolution in North American diesel pick-up truck market and
propelled GM’s heavy duty diesel pick-up truck market share to
over 25 percentage points,” said Charles Freese, GM Powertrain
executive director, diesel engineering. “The introduction of the
improved, 2006 Duramax turbo diesel once again sets a new benchmark to
which all others will be measured.”

The Duramax 6600’s horsepower and torque increase and emissions
reduction are enabled by a strengthened iron cylinder block and a lower
compression ratio. The lower compression reduces stress on the engine
by reducing the peak cylinder firing pressure. This, in turn, allows
more fuel to be burned â€" more fuel means more power â€"
while the lower compression helps reduce NOx emissions. Lower
compression also helps reduce noise and vibration, making the all
variants of the 6600 a quieter and smoother engine.

A revised variable-geometry turbocharger also enhances the driving
experience of the Duramax 6600. Aerodynamic changes to the
turbo’s vanes help tailor controlled application of turbo power
for seamless and immediate response at full throttle. The turbo, which
spins at up to 120,000 rpm, is high-speed-balanced, reducing vibration
and resonance â€" and contributing to the engine’s overall
smoothness and refinement. The revised turbo also helps reduce
emissions, while maximum boost remains at 20 psi.

Another new feature of the Duramax 6600’s turbo system is the
capability of the variable-geometry turbocharger to provide exhaust
braking. This function is available on some medium-duty truck models
and can replace add-on exhaust brake hardware. With the new system,
braking is controlled by a signal from the engine controller and can be
activated by the driver.

The comprehensive list of changes and upgrades to the 2006 Duramax 6600
includes:

* Cylinder block casting and machining changes strengthen the bottom of
the cylinder bores to support increased horsepower and torque
* Upgraded main bearing material increases durability
* Revised piston design helps lower compression ratio to 16.8:1 from
17.5:1
* Piston pin bore diameter increased for increased strength
* Connecting rod “ I ” section is thicker for increased
strength
* Cylinder heads revised to accommodate lower compression and reduced
cylinder firing pressure
* Maximum injection pressure increased from 23,000 psi to more than
26,000 psi
* Fuel delivered via higher-pressure pump, fuel rails, distribution
lines and all-new, seven-hole fuel injectors

* Fuel injectors spray directly onto glow plugs, providing faster,
better-quality starts and more complete cold-start combustion for
reduced emissions
* Improved glow plugs heat up faster through an independent controller
* Revised variable-geometry turbocharger is aerodynamically more
efficient to help deliver smooth and immediate response and lower
emissions
* Air induction system re-tuned to enhance quietness
* EGR has larger cooler to bring more exhaust into the system
* First application of new, 32-bit E35 controller, which adjusts and
compensates for the fuel flow to bolster efficiency and reduce
emissions

The Duramax 6600 also has a new intake air heater to reduce smoke and
emissions during cold or light-load driving. The system features a
1000-watt grid heater located in the air intake duct, which is
triggered automatically by the engine controller. It heats up the
incoming air to speed warm-up of the engine.

In addition to 50 more horsepower and 45 more lb-ft of torque in the
Silverado and Sierra, changes to the 2006 Duramax 6600 build on a host
of improvements introduced for ’05 â€" improvements that
bolstered an already strong foundation. The Duramax 6600 features a
rigid cast iron cylinder block with induction-hardened cylinder bores;
four-bolt, cross-drilled main bearing caps; forged steel,
nitride-hardened crankshaft; aluminum pistons with jet-spray oil
cooling; aluminum cylinder heads with four valves per cylinder;
integrated oil cooler and a charge-cooled turbocharging system.
Features, such as easy-access fuel filter and timing gears, reduce
maintenance time and effort.

A new, 32-bit E35 engine controller monitors and adjusts the
engine’s operation. Designed exclusively for the Duramax diesel
engine, the controller helps the injectors precisely meter fuel to the
cylinders and can compensate for the variability of the injectors and
fuel flow. This sophisticated, more powerful controller also can
support up to five injections per cylinder and eliminates the need for
an engine-mounted drive unit to fire the fuel injectors.

The new Duramax 6600 in the Silverado and Sierra heavy-duty pick-ups
will be available exclusively with the new Allison 1000 6-speed
automatic transmission, featuring class-first features, like tap-shift
range selection mode.

In addition to the Chevy Silverado HD and GMC Sierra HD, the Duramax
6600 (LLY) is also available at varying power outputs in the Hummer H1
Alpha, Chevy Kodiak and GMC Topkick. For 2006, the Duramax is available
for the first time in GM’s full-size vans, Chevy Express and GMC
Savana, providing power and capabilities matched with quietness and
smoothness not found in competitors’ diesel-equipped vans.

The Duramax 6600 was introduced in 2001 and was developed in a
partnership with GM Powertrain and Isuzu Motors. Since its
introduction, more than 650,000 6.6L Duramax diesels have been built
and sold.

The Duramax 6600 is assembled at the DMAX facility in Moraine, Ohio , a
joint venture between General Motors and Isuzu created specifically to
produce diesel engines.
thenewguy - 19 Sep 2005 17:26 GMT
>As usual, Max was WRONG!!!! The Duramax diesel is STILL going strong
>after several years of PROVEN reliability.

you need to have your head examined.  what in the world would possess
you to post an add about any truck other than dodge in a dodge ng?
i'm not too sure a corporate add for dodge would go over real big
here.  

i have no issues with the duramax.  seems like a good truck, engine
and tranny to me.  but why in the world would you post a corporate add
to show how good it is?  what the heck do you expect gm to
say.............."GM announced today that they will continue the
production of their mediocre duramax, that compares OK with dodge and
ford.  gm admits that thier duramax isn't any better than ford or
dodge but is banking on the fact that it isn't any worse either".  i
mean come on, how dumb are you?

>2006 Duramax 6600 Turbodiesel to Deliver Class-leading Torque in a More
>Powerful and Refined Package
[quoted text clipped - 129 lines]
>joint venture between General Motors and Isuzu created specifically to
>produce diesel engines.
Roy - 19 Sep 2005 17:52 GMT
As usual, Max was WRONG!!!! The Duramax diesel is STILL going strong
after several years of PROVEN reliability.

Hey Max!! Looks like ya have a new best friend.<BFG>

Roy
Max Dodge - 20 Sep 2005 00:50 GMT
Nah, just an idiot come back for more facts instead of corporate rhetoric.

Signature

Max

Give a man a match, and he is warm for a short while. Light him on fire, and
he is warm for the rest of his life.

> As usual, Max was WRONG!!!! The Duramax diesel is STILL going strong
> after several years of PROVEN reliability.
>
> Hey Max!! Looks like ya have a new best friend.<BFG>
>
> Roy
John Kunkel - 21 Sep 2005 18:01 GMT
> Nah, just an idiot come back for more facts instead of corporate rhetoric.

Once again the king bullshitter of all time thinks that mindlessly repeating
the word "fact" makes bullshit fact.
Max Dodge - 20 Sep 2005 00:49 GMT
Yup, after several years of blown head gaskets, they lowered the compression
ratio.

And OOOWHEEE its got GLOW PLUGS?

Its still a V8 where an inline six is better.

Signature

Max

Give a man a match, and he is warm for a short while. Light him on fire, and
he is warm for the rest of his life.

As usual, Max was WRONG!!!! The Duramax diesel is STILL going strong
after several years of PROVEN reliability.

2006 Duramax 6600 Turbodiesel to Deliver Class-leading Torque in a More
Powerful and Refined Package

Engine output for Chevy Silverado HD and GMC Sierra HD increased to 360
horsepower and a class-leading 650 lb-ft of torque

New glow-plugs reduce start time by as much as 50 percent

PONTIAC , MICH. â?" Later this year, GM Powertrain will introduce
a new 6.6L Duramax 6600 turbodiesel V-8 (RPO LBZ) for the 2006 model
year Chevy Silverado HD and GMC Sierra HD with class-leading horsepower
â?" 360 (268 kw) at 3200 rpm and class-leading torque, at 650
lb.-ft. (881 Nm) at 1600 rpm. In addition to the power increase in the
Silverado and Sierra, all 2006 Duramax engines have been significantly
revised to deliver lower emissions and significantly improved quietness
and smoothness in every application.

The 2006 Silverado HD and Sierra HD with the Allison 6-speed automatic
transmission will be equipped with a significantly revised 310
horsepower Duramax 6600 (LLY) through the third quarter of 2005. It
will be replaced in these applications in the fourth quarter of 2005,
by the higher output, 360-horsepower Duramax (LBZ).

â?oThe introduction of the Duramax diesel in 2001 represented a
significant evolution in North American diesel pick-up truck market and
propelled GMâ?Ts heavy duty diesel pick-up truck market share to
over 25 percentage points,� said Charles Freese, GM Powertrain
executive director, diesel engineering. â?oThe introduction of the
improved, 2006 Duramax turbo diesel once again sets a new benchmark to
which all others will be measured.�

The Duramax 6600â?Ts horsepower and torque increase and emissions
reduction are enabled by a strengthened iron cylinder block and a lower
compression ratio. The lower compression reduces stress on the engine
by reducing the peak cylinder firing pressure. This, in turn, allows
more fuel to be burned â?" more fuel means more power â?"
while the lower compression helps reduce NOx emissions. Lower
compression also helps reduce noise and vibration, making the all
variants of the 6600 a quieter and smoother engine.

A revised variable-geometry turbocharger also enhances the driving
experience of the Duramax 6600. Aerodynamic changes to the
turboâ?Ts vanes help tailor controlled application of turbo power
for seamless and immediate response at full throttle. The turbo, which
spins at up to 120,000 rpm, is high-speed-balanced, reducing vibration
and resonance â?" and contributing to the engineâ?Ts overall
smoothness and refinement. The revised turbo also helps reduce
emissions, while maximum boost remains at 20 psi.

Another new feature of the Duramax 6600â?Ts turbo system is the
capability of the variable-geometry turbocharger to provide exhaust
braking. This function is available on some medium-duty truck models
and can replace add-on exhaust brake hardware. With the new system,
braking is controlled by a signal from the engine controller and can be
activated by the driver.

The comprehensive list of changes and upgrades to the 2006 Duramax 6600
includes:

* Cylinder block casting and machining changes strengthen the bottom of
the cylinder bores to support increased horsepower and torque
* Upgraded main bearing material increases durability
* Revised piston design helps lower compression ratio to 16.8:1 from
17.5:1
* Piston pin bore diameter increased for increased strength
* Connecting rod â?o I â? section is thicker for increased
strength
* Cylinder heads revised to accommodate lower compression and reduced
cylinder firing pressure
* Maximum injection pressure increased from 23,000 psi to more than
26,000 psi
* Fuel delivered via higher-pressure pump, fuel rails, distribution
lines and all-new, seven-hole fuel injectors

* Fuel injectors spray directly onto glow plugs, providing faster,
better-quality starts and more complete cold-start combustion for
reduced emissions
* Improved glow plugs heat up faster through an independent controller
* Revised variable-geometry turbocharger is aerodynamically more
efficient to help deliver smooth and immediate response and lower
emissions
* Air induction system re-tuned to enhance quietness
* EGR has larger cooler to bring more exhaust into the system
* First application of new, 32-bit E35 controller, which adjusts and
compensates for the fuel flow to bolster efficiency and reduce
emissions

The Duramax 6600 also has a new intake air heater to reduce smoke and
emissions during cold or light-load driving. The system features a
1000-watt grid heater located in the air intake duct, which is
triggered automatically by the engine controller. It heats up the
incoming air to speed warm-up of the engine.

In addition to 50 more horsepower and 45 more lb-ft of torque in the
Silverado and Sierra, changes to the 2006 Duramax 6600 build on a host
of improvements introduced for â?T05 â?" improvements that
bolstered an already strong foundation. The Duramax 6600 features a
rigid cast iron cylinder block with induction-hardened cylinder bores;
four-bolt, cross-drilled main bearing caps; forged steel,
nitride-hardened crankshaft; aluminum pistons with jet-spray oil
cooling; aluminum cylinder heads with four valves per cylinder;
integrated oil cooler and a charge-cooled turbocharging system.
Features, such as easy-access fuel filter and timing gears, reduce
maintenance time and effort.

A new, 32-bit E35 engine controller monitors and adjusts the
engineâ?Ts operation. Designed exclusively for the Duramax diesel
engine, the controller helps the injectors precisely meter fuel to the
cylinders and can compensate for the variability of the injectors and
fuel flow. This sophisticated, more powerful controller also can
support up to five injections per cylinder and eliminates the need for
an engine-mounted drive unit to fire the fuel injectors.

The new Duramax 6600 in the Silverado and Sierra heavy-duty pick-ups
will be available exclusively with the new Allison 1000 6-speed
automatic transmission, featuring class-first features, like tap-shift
range selection mode.

In addition to the Chevy Silverado HD and GMC Sierra HD, the Duramax
6600 (LLY) is also available at varying power outputs in the Hummer H1
Alpha, Chevy Kodiak and GMC Topkick. For 2006, the Duramax is available
for the first time in GMâ?Ts full-size vans, Chevy Express and GMC
Savana, providing power and capabilities matched with quietness and
smoothness not found in competitorsâ?T diesel-equipped vans.

The Duramax 6600 was introduced in 2001 and was developed in a
partnership with GM Powertrain and Isuzu Motors. Since its
introduction, more than 650,000 6.6L Duramax diesels have been built
and sold.

The Duramax 6600 is assembled at the DMAX facility in Moraine, Ohio , a
joint venture between General Motors and Isuzu created specifically to
produce diesel engines.
TBone - 20 Sep 2005 13:53 GMT
Gee, Max, such a solid defense of the superiority of the Cummins.  How could
anyone dispute this, LOL!

Signature

If at first you don't succeed,  you're not cut out for skydiving

> Yup, after several years of blown head gaskets, they lowered the compression
> ratio.
[quoted text clipped - 139 lines]
> joint venture between General Motors and Isuzu created specifically to
> produce diesel engines.
Max Dodge - 20 Sep 2005 15:11 GMT
> Gee, Max, such a solid defense of the superiority of the Cummins.  How
> could
> anyone dispute this, LOL!

Easy. Let the product speak for itself. Yeah, the Cummins is THAT much
better.

Signature

Max

Give a man a match, and he is warm for a short while. Light him on fire, and
he is warm for the rest of his life.

> Gee, Max, such a solid defense of the superiority of the Cummins.  How
> could
[quoted text clipped - 147 lines]
>> joint venture between General Motors and Isuzu created specifically to
>> produce diesel engines.
TBone - 22 Sep 2005 19:29 GMT
> > Gee, Max, such a solid defense of the superiority of the Cummins.  How
> > could
> > anyone dispute this, LOL!
>
> Easy. Let the product speak for itself. Yeah, the Cummins is THAT much
> better.

But without facts, this is just your opinion.

Signature

If at first you don't succeed,  you're not cut out for skydiving

craig@metronet.com - 22 Sep 2005 19:48 GMT
>> Easy. Let the product speak for itself. Yeah, the Cummins is THAT much
>> better.

>But without facts, this is just your opinion.

True ... but that's the case with any truck maker.  For example, I had
a 2002 Toyota Tacoma, V6, QC, 4x4.  At the time it was the highest
rated truck with the lowest rate of service visits.  On paper this
truck was the BOMB.  In actuality, it was the worst vehicle I had ever
owned.  A true lemon from the get-go.  Of the 9 months I owned it, it
spent 30+ days in repair.

So, to me, the facts have less value than my own opinion.  I follow the
KISS method.  Keep It Simple Stupid.  The Cummins is a simpler, time
tested design with fewer moving parts.  It's made by a company that
does not manufacture cars ... just power systems (engines, generators,
etc.)  

The decision was easy for me.

Craig C.
Nosey - 20 Sep 2005 15:51 GMT
> Yup, after several years of blown head gaskets, they lowered the
> compression ratio.

Nah, they did that to increase performance. ;^)
SnoMan - 21 Sep 2005 04:36 GMT
>And OOOWHEEE its got GLOW PLUGS?
>
>Its still a V8 where an inline six is better.

Since when is glow plugs bad?  One way or anoher you have to get some
heat in a oil burner to light the "wick" in cold weather.

Also but what rule of logic is a inline design always better than a V
engine? A compact V8 does rev smoother and is shorter so it allows for
shorter hood or less intrusion into passanger compartment firewall.
Above 2500 RPM, the Dmax is a LOT smoother than the Cummins because
though the Cummins will rev to there and beyond, it do not feel happy
about it because the basic engine was designed from day one, bore
stroke and balance wise for operation at about 2200 RPM or less. WHich
engine I would choice would depend on what I planned to do with it
because they both have pluses and minuses and I have issues with a
1400 lb motor (Cummins) in a P/U anyway.
Max Dodge - 21 Sep 2005 06:48 GMT
> Since when is glow plugs bad?  One way or anoher you have to get some
> heat in a oil burner to light the "wick" in cold weather.

Yup, and a grid heater does a fine job. Heating the air that goes out is a
stupid thing. Heating the air that goes in works much better. Unless of
course, its a Duramax, and you need to spray the fuel directly on a glowing
piece of steel to get the engine to light off. Sounds more like an old Ford
diesel more than a new modern diesel engine.

> Also but what rule of logic is a inline design always better than a V
> engine?

An inline six will deliver more torque for the displacement than a V8. Ever
notice how the SAME B series engine keeps making more power, but the others
have redesigned from the blank paper at least once?

> A compact V8 does rev smoother and is shorter so it allows for
> shorter hood or less intrusion into passanger compartment firewall.

Its a truck fer cryin out loud, who gives a damn?

> Above 2500 RPM, the Dmax is a LOT smoother than the Cummins because
> though the Cummins will rev to there and beyond, it do not feel happy
> about it because the basic engine was designed from day one, bore
> stroke and balance wise for operation at about 2200 RPM or less.

Um, yeah, which is where a diesel does most of its work. Say, that bigger
heavier thing didn't exactly get noticed by you, did it? Ever wonder why the
Cummins has better durability? Or why it has less moving parts?

> WHich
> engine I would choice would depend on what I planned to do with it
> because they both have pluses and minuses and I have issues with a
> 1400 lb motor (Cummins) in a P/U anyway.

So do I, I'd never put a Cummins C series in a pickup, although its been
done. Maybe thats why they used the 1100lb B series? Which BTW, makes for
excellent traction in snow, and doesn't notice the A/C running in summer,
nor the front axle locked in during winter.

Signature

Max

Give a man a match, and he is warm for a short while. Light him on fire, and
he is warm for the rest of his life.

>>And OOOWHEEE its got GLOW PLUGS?
>>
[quoted text clipped - 13 lines]
> because they both have pluses and minuses and I have issues with a
> 1400 lb motor (Cummins) in a P/U anyway.
Carolina Watercraft Works - 21 Sep 2005 01:05 GMT
Wow....NOT!!

I wonder what sort of increase you'd get by increasing the CTD
by 10%?  I'm sure if the CTD were a 6.6L motor the Dura(Tam)pax
would be sucking hind tit...again.

Signature

_________________________
Laszlo Almasi
Carolina Watercraft Works, Inc.

"In the battle between money and love, money will always triumph"
I may have to change my signature......on second thought, I was right the
first time.


As usual, Max was WRONG!!!! The Duramax diesel is STILL going strong
after several years of PROVEN reliability.

2006 Duramax 6600 Turbodiesel to Deliver Class-leading Torque in a More
Powerful and Refined Package

Engine output for Chevy Silverado HD and GMC Sierra HD increased to 360
horsepower and a class-leading 650 lb-ft of torque

New glow-plugs reduce start time by as much as 50 percent

PONTIAC , MICH. â?" Later this year, GM Powertrain will introduce
a new 6.6L Duramax 6600 turbodiesel V-8 (RPO LBZ) for the 2006 model
year Chevy Silverado HD and GMC Sierra HD with class-leading horsepower
â?" 360 (268 kw) at 3200 rpm and class-leading torque, at 650
lb.-ft. (881 Nm) at 1600 rpm. In addition to the power increase in the
Silverado and Sierra, all 2006 Duramax engines have been significantly
revised to deliver lower emissions and significantly improved quietness
and smoothness in every application.

The 2006 Silverado HD and Sierra HD with the Allison 6-speed automatic
transmission will be equipped with a significantly revised 310
horsepower Duramax 6600 (LLY) through the third quarter of 2005. It
will be replaced in these applications in the fourth quarter of 2005,
by the higher output, 360-horsepower Duramax (LBZ).

â?oThe introduction of the Duramax diesel in 2001 represented a
significant evolution in North American diesel pick-up truck market and
propelled GMâ?Ts heavy duty diesel pick-up truck market share to
over 25 percentage points,� said Charles Freese, GM Powertrain
executive director, diesel engineering. â?oThe introduction of the
improved, 2006 Duramax turbo diesel once again sets a new benchmark to
which all others will be measured.�

The Duramax 6600â?Ts horsepower and torque increase and emissions
reduction are enabled by a strengthened iron cylinder block and a lower
compression ratio. The lower compression reduces stress on the engine
by reducing the peak cylinder firing pressure. This, in turn, allows
more fuel to be burned â?" more fuel means more power â?"
while the lower compression helps reduce NOx emissions. Lower
compression also helps reduce noise and vibration, making the all
variants of the 6600 a quieter and smoother engine.

A revised variable-geometry turbocharger also enhances the driving
experience of the Duramax 6600. Aerodynamic changes to the
turboâ?Ts vanes help tailor controlled application of turbo power
for seamless and immediate response at full throttle. The turbo, which
spins at up to 120,000 rpm, is high-speed-balanced, reducing vibration
and resonance â?" and contributing to the engineâ?Ts overall
smoothness and refinement. The revised turbo also helps reduce
emissions, while maximum boost remains at 20 psi.

Another new feature of the Duramax 6600â?Ts turbo system is the
capability of the variable-geometry turbocharger to provide exhaust
braking. This function is available on some medium-duty truck models
and can replace add-on exhaust brake hardware. With the new system,
braking is controlled by a signal from the engine controller and can be
activated by the driver.

The comprehensive list of changes and upgrades to the 2006 Duramax 6600
includes:

* Cylinder block casting and machining changes strengthen the bottom of
the cylinder bores to support increased horsepower and torque
* Upgraded main bearing material increases durability
* Revised piston design helps lower compression ratio to 16.8:1 from
17.5:1
* Piston pin bore diameter increased for increased strength
* Connecting rod â?o I â? section is thicker for increased
strength
* Cylinder heads revised to accommodate lower compression and reduced
cylinder firing pressure
* Maximum injection pressure increased from 23,000 psi to more than
26,000 psi
* Fuel delivered via higher-pressure pump, fuel rails, distribution
lines and all-new, seven-hole fuel injectors

* Fuel injectors spray directly onto glow plugs, providing faster,
better-quality starts and more complete cold-start combustion for
reduced emissions
* Improved glow plugs heat up faster through an independent controller
* Revised variable-geometry turbocharger is aerodynamically more
efficient to help deliver smooth and immediate response and lower
emissions
* Air induction system re-tuned to enhance quietness
* EGR has larger cooler to bring more exhaust into the system
* First application of new, 32-bit E35 controller, which adjusts and
compensates for the fuel flow to bolster efficiency and reduce
emissions

The Duramax 6600 also has a new intake air heater to reduce smoke and
emissions during cold or light-load driving. The system features a
1000-watt grid heater located in the air intake duct, which is
triggered automatically by the engine controller. It heats up the
incoming air to speed warm-up of the engine.

In addition to 50 more horsepower and 45 more lb-ft of torque in the
Silverado and Sierra, changes to the 2006 Duramax 6600 build on a host
of improvements introduced for â?T05 â?" improvements that
bolstered an already strong foundation. The Duramax 6600 features a
rigid cast iron cylinder block with induction-hardened cylinder bores;
four-bolt, cross-drilled main bearing caps; forged steel,
nitride-hardened crankshaft; aluminum pistons with jet-spray oil
cooling; aluminum cylinder heads with four valves per cylinder;
integrated oil cooler and a charge-cooled turbocharging system.
Features, such as easy-access fuel filter and timing gears, reduce
maintenance time and effort.

A new, 32-bit E35 engine controller monitors and adjusts the
engineâ?Ts operation. Designed exclusively for the Duramax diesel
engine, the controller helps the injectors precisely meter fuel to the
cylinders and can compensate for the variability of the injectors and
fuel flow. This sophisticated, more powerful controller also can
support up to five injections per cylinder and eliminates the need for
an engine-mounted drive unit to fire the fuel injectors.

The new Duramax 6600 in the Silverado and Sierra heavy-duty pick-ups
will be available exclusively with the new Allison 1000 6-speed
automatic transmission, featuring class-first features, like tap-shift
range selection mode.

In addition to the Chevy Silverado HD and GMC Sierra HD, the Duramax
6600 (LLY) is also available at varying power outputs in the Hummer H1
Alpha, Chevy Kodiak and GMC Topkick. For 2006, the Duramax is available
for the first time in GMâ?Ts full-size vans, Chevy Express and GMC
Savana, providing power and capabilities matched with quietness and
smoothness not found in competitorsâ?T diesel-equipped vans.

The Duramax 6600 was introduced in 2001 and was developed in a
partnership with GM Powertrain and Isuzu Motors. Since its
introduction, more than 650,000 6.6L Duramax diesels have been built
and sold.

The Duramax 6600 is assembled at the DMAX facility in Moraine, Ohio , a
joint venture between General Motors and Isuzu created specifically to
produce diesel engines.
 
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