2006 changes

[gave20]

I was looking around GM's ordering site for 06 and it looks like the Allison gets another gear making it a 6 speed, no suprise, but I was looking at the duramax rating numbers and they are down from 05. Don't know why this is hopefully someone does. It also looks like GM dropped the camper style mirrors and have gone to verticals similar to Ford's super dutys. Below are the Dmax numbers

 

2005

LLY DURAMAX 6600 V8 TURBO DIESEL ENGINE SPECIFICATIONS

 

 

Engine type Overhead Valves

Piston displacement, cu. in.(liter) 402 (6.59)

Bore and stroke, in.(cm.) 4.1 x 3.9 (10.41 x 9.91)

Compression ratio 17.5:1

Exhaust - single All

Horsepower - Manual 300@3000 rpm

Kilowatts(kW) - Manual 223.80@3000 rpm

Horsepower - Auto 310@3000 rpm

Kilowatts(kW) - Auto 231.26@3000 rpm

Torque (lb.-ft.) - Manual 520@1600 rpm

Newton - Meters (N-m) - Manual 702.00@1600 rpm

Torque (lb.-ft.) - Auto 605@1600 rpm

Newton - Meters (N-m) - Auto 816.75@1600 rpm

 

 

2006

Engine type Overhead Valves

Piston displacement, cu. in.(liter) 403 (6.61)

Bore and stroke, in.(cm.) 4.06 x 3.9 (10.31 x 9.91)

Compression ratio 16.8:1

Exhaust - single All

Horsepower 250@3200 rpm

Kilowatts(kW) 186.50@3200 rpm

Torque (lb.-ft.) 460@1600 rpm

Newton - Meters (N-m) 621.00@1600 rpm

[WyRam]

Has to be a missprint.

[mmmikkke]

Maybe they're choking it down to reduce PM2.5 pollution. Are there new pollution regulations for 2006 vehicles in general?

[lch0]

where exactly did you go to find out info. on the 2006's ?

[bluenote]

2006

Engine type  Overhead Valves

Piston displacement, cu. in.(liter)  403 (6.61) 

Bore and stroke, in.(cm.)  4.06 x 3.9 (10.31 x 9.91) 

Compression ratio  16.8:1

Exhaust - single  All

Horsepower 250@3200 rpm

Kilowatts(kW) 186.50@3200 rpm

Torque (lb.-ft.) 460@1600 rpm

Newton - Meters (N-m) 621.00@1600 rpm

 

<{POST_SNAPBACK}>

 

 

I'm about 99.9% sure that these are the numbers for the de-tuned Duramax that is being put into the full-sized vans for 2006. It will not be paired with the Allison transmission and therefore had to be tuned for lower output to avoid tranny damage. The Duramax numbers for the pickup trucks will almost certainly not go down, but there are rumors that an increase is possible to go along with the new 6 speed version of the Allison in 2006.

[gave20]

2006

Engine type  Overhead Valves

Piston displacement, cu. in.(liter)  403 (6.61) 

Bore and stroke, in.(cm.)  4.06 x 3.9 (10.31 x 9.91) 

Compression ratio  16.8:1

Exhaust - single  All

Horsepower 250@3200 rpm

Kilowatts(kW) 186.50@3200 rpm

Torque (lb.-ft.) 460@1600 rpm

Newton - Meters (N-m) 621.00@1600 rpm

 

<{POST_SNAPBACK}>

 

 

I'm about 99.9% sure that these are the numbers for the de-tuned Duramax that is being put into the full-sized vans for 2006. It will not be paired with the Allison transmission and therefore had to be tuned for lower output to avoid tranny damage. The Duramax numbers for the pickup trucks will almost certainly not go down, but there are rumors that an increase is possible to go along with the new 6 speed version of the Allison in 2006.

 

<{POST_SNAPBACK}>

 

 

 

I got the numbers from the 3500 truck section, but your still probably right. if you look at the 2005 numbers the have HP ratings for manual and auto trannys so GM will probably update in the near future.

 

 

Icho- there's a dealer ordering web page that lists all info related to each vehicle; options, specs and common build RPO codes. I can't post the link because its a GM site not typically available to the public but if you search under google you might be able to find it.

try 2005 online order and reference guide.

[Chevy Tough]

The 250 Horsepower and 460 ft lbs of torque is for the Chevy/GMC Vans, i was just looking at the 06 changes and that number is for the GM vans not the HD Silverado.

[Daubs]

Yep, I've heard the D-max is going in Vans also...and de-tuned.