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<H2>Distribution Updates</H2>
<H4>Updates for Silverado 2500HD</H4>
<H4>Week of 10/6/2003</H4>


Effective 10/6/2003, the following changes will be made to the Vehicle Order Guide:


<UL>
<LI>Mechanical section-(LB7) Engine, Duramax 6600 Turbo Diesel V8, changed HP rpm from 3100 to 3000 and Torque rpm from 1800 to 1600 in the description.</LI>[/list]





From this web page


http://eogld.ecomm.gm.com/


Was something changed in the engine???
 

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HMMMM lowering the peak curve ,interesting ..... Wonder if the earlier trucks could get a reflash ....


Didn't they change this in 02 they reason why the higher speed govenor is possible ??

Mac
 

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Looks like they may be lowering the claimed HP/TQ so they can claim higher later?
 

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This is a weird thing that's been changing back and forth randomly. In 2001 it was 300 HP @ 3100 RPM and 520 lb-ft @ 1800 RPM


For 2002 it was 300 HP @ 3000 RPM and 520 lb-ft @ 1800 (by the way, this doesn't add up, because 300 HP @ 3000 RPM means 525 lb-ft at 3000 RPM if you run the HP = (Tourqe*RPM)/5250 How can peak torque be 520 when torque at 3000 RPM = 525?)


For 2003 it was once again 300 HP @ 3100 RPM and 520 lb-ft at 1800 RPM.


Apparently for 2004 it is 300 HP @ 3000 RPM and 520 lb-ft at 1600 RPM.


The really screwy part is that I'm sure the D-max is capable of meeting all of those numbers! As long as it is making "at least" 520 ft-lbs at both 1600 RPM and 1800 RPM, and "at least" 300 HP at both 3000 and 3100 RPM then they can advertise any of the above numbers.
 

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Maybe something to do with emissions and average MPG FED. requirements. Gets them under a restriction or something like that.
 
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