what is the difference between lbz and lly - Chevy and GMC Duramax Diesel Forum
06-07.5 LBZ & LLY Performance Parts Discussion Discussion of Performance Parts For the 06-07.5 LBZ/LLY Duramax Trucks No Advertising

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Old 02-02-2008, 07:24 PM   eBay Motors  #1 (permalink)
 
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what is the difference between lbz and lly

how can you tell the difference between the two engines? My dad has an 07 with the old body style how do i tell?
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Old 02-02-2008, 09:07 PM   eBay Motors  #2 (permalink)
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8 digit in vin number
#1-lb7
#2-04.5-05lly
#3-06lly
#D-lbz
#6-lmm
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Old 02-02-2008, 09:48 PM   eBay Motors  #3 (permalink)
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Your dads tuck is a LBZ 360hp, 650ft
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Old 02-07-2008, 10:58 AM   eBay Motors  #4 (permalink)
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Is the LBZ that much better than the LLY? I'm new to this Forum,Thanx
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Old 02-11-2008, 01:42 AM   eBay Motors  #5 (permalink)
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LBZ Engine

Mine is the LBZ also and I love that 360 Horse Power...
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Old 02-11-2008, 05:33 AM   eBay Motors  #6 (permalink)
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YEp your dad's truck is an LBZ. IN the new body style is when the LMM came out. The LBZ is a stong motor. IT's got about 50 more hp than the LLY. They do run pretty good.
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Old 02-11-2008, 06:00 AM   eBay Motors  #7 (permalink)
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LBZ is a more refined version of the Duramax. More power and a stronger block.
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Old 02-20-2008, 01:01 PM   eBay Motors  #8 (permalink)
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Mine is an '06 3500 but my 8th digit in vin is a 2. I suppose it is an lly.
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Old 02-20-2008, 02:45 PM   eBay Motors  #9 (permalink)
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Yes the early 06 were lly. Everything built after 01-01-06 are Lbz.
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Old 02-25-2008, 08:02 AM   eBay Motors  #10 (permalink)
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That is true. But that is where the similarity ends. The 06 LLY and 06 LBZ, are identical in every way, except for tuning, which is a mute point as soon as you hook up a tune.
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