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Duramax 6600 Discussion Forum for the Duramax 6600 Diesel Engine, including the LB7, LLY, LBZ & LMM engine specific topics.

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  #11  
Old 03-22-2010, 08:41 PM
DDiesel DDiesel is offline
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Join Date: Mar 2010
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Question LBZ Clarification?

Is there anything more/less desirable to the LLY equipped '06s than the LBZs? I am looking to update from my '02 LB7 to an '06 or '07. Should I search only for LBZ equipped trucks or is any '06 model approachable? Also, is there a fuel economy poll posted for the LBZ engines? I didn't see one like the one for the LB7s. Very interesting info!
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  #12  
Old 03-23-2010, 10:03 AM
Kennedy Kennedy is offline
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Location: Loyal WI US
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In my opinion, the 06 trucks are the same and retaining the LLY monicker is one of the stupidest things that GM could do. It just creates confusion. The only real difference is the ECM programming and while the HP rating remained at 310HP, the real world showed it more like 340HP or slightly above 50% of the difference between teh true LLY and the LBZ. When properly tuned they all run the same so no loss.
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