what is the difference between lbz and lly - Chevy and GMC Duramax Diesel Forum
06-07 LBZ & LLY Performance Parts Discussion Discussion of Performance Parts For the 06-07.5 LBZ/LLY Duramax Trucks No Advertising

 
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post #1 of 10 (permalink) Old 02-02-2008, 07:24 PM Thread Starter
 
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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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post #2 of 10 (permalink) Old 02-02-2008, 09:07 PM
Yep!
 
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8 digit in vin number
#1-lb7
#2-04.5-05lly
#3-06lly
#D-lbz
#6-lmm

Craig






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post #3 of 10 (permalink) Old 02-02-2008, 09:48 PM
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Your dads tuck is a LBZ 360hp, 650ft

2006 GMC 2500HD LBZ Crew Cab 4x4, Tie Rod Sleeves, LineX, Silverline Turbo Back Dual Exhaust, PPE Hot Programmer, Egr Block Plate, PPE Air Box Mod, 2in. Plug, SES Light

Full Bore Exhaust Manifold compliments of BD Diesel.

1987 Corvette

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post #4 of 10 (permalink) Old 02-07-2008, 10:58 AM
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Is the LBZ that much better than the LLY? I'm new to this Forum,Thanx
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post #5 of 10 (permalink) Old 02-11-2008, 01:42 AM
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LBZ Engine

Mine is the LBZ also and I love that 360 Horse Power...

2006 Duramax 2500HD CC SB LBZ 6 speed Allison, 2" Truxxx lift, 18"X9" Moto Metals, BFG AT 285/65/18, R-Fab Nerfs.
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post #6 of 10 (permalink) Old 02-11-2008, 05:33 AM
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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.

"You can't stop a bad guy with your middle finger and a bag of quarters."

Ted Nugent
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post #7 of 10 (permalink) Old 02-11-2008, 06:00 AM
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LBZ is a more refined version of the Duramax. More power and a stronger block.

2006 GMC 2500HD LBZ Crew Cab 4x4, Tie Rod Sleeves, LineX, Silverline Turbo Back Dual Exhaust, PPE Hot Programmer, Egr Block Plate, PPE Air Box Mod, 2in. Plug, SES Light

Full Bore Exhaust Manifold compliments of BD Diesel.

1987 Corvette

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post #8 of 10 (permalink) Old 02-20-2008, 01:01 PM
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Mine is an '06 3500 but my 8th digit in vin is a 2. I suppose it is an lly.

'06 3500 Crew Cab LT
Long Bed LLY, 6 inch Fabtech
Lift, 35/12.50 17 Pro Comp Tires,
PPE CAI intake mod, AFE Pro Dry Filter,
MBRP 5" Turbo Back Exhaust, Diablo Predator,
Autometer Ultra Lite II Pyro & Boost Gauges
Hitch Cam, Headrest DVD System.
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post #9 of 10 (permalink) Old 02-20-2008, 02:45 PM
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Yes the early 06 were lly. Everything built after 01-01-06 are Lbz.

KYLE

:rockin2010 Camaro SS LS3 426 HP:rockin
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post #10 of 10 (permalink) Old 02-25-2008, 08:02 AM
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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.

Michael
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