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well I just bought my first silverado (not my first chevy) traded in my 01 ram for a 2006 crew cab 5.3 z71. what options did the z71 come with i know it has skid plates i can see them and i think they come with a locking rear differential anyone know anything else? how many hp is the lm7 5.3?
 

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Hillbilly Deluxe
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i just went yesterday to build my 08 HD, the z71 package was locking diff (G80, Skid plates, nitrogen bumpstops( sweet!), and bigger shocks. I know the OBS z71 i think had Bilstein shocks in the package.
 

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Iron block is 295 335 i believe, and alum is 310 335 i believe.
 

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Bayou Surface Drive, LLC
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There are too many options to list. read all the codes and decode it. Those tell you everyhting about your truck.
 

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For my 01, Z-71 meant that it was four wheel drive, had some extra skid plates, and some more off road friendly shocks. The differential, tranny cooler, tow package, and everything else were just additional options.

On the 2007's Chevy messed up and made the Z-71 for two wheel drive trucks as well. Just like Ford's FX2. I hate that they are doing that now, everyone just wants a _______ sticker on the rear quarter panel now. Z-71 and FX4 should be for four wheel drive vehicles only.
 
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