Chevy and GMC Duramax Diesel Forum - View Single Post

**TYREBOYZ_DEMAXIN** · 07-17-2008, 01:07 PM

2001-2004=LB7,was the 1ST Duramax GM brought out in 2001 with a Fixed Vane Turbo
2004.5-2005=LLY,came out with a Varable Vane Turbo along with some other upgrades but the one upgrade wasn't realy an upgrade since it causes overheating in some LLYs but not all,also the power was increased in the LLY..
2006-2007=LBZ,the LBZ comes with a 6SP Allison tranny and some more HP along with the overheating issue fixed
2007.5-and newer=LMM,perty much the same as the LBZ except they have all the new Emission stuff on it along with some more power.

07-17-2008, 01:07 PM	eBay Motors #7 (permalink)
TYREBOYZ_DEMAXIN Diesel Addict Join Date: Feb 2007 Location: Barnesville OH Posts: 4,506	2001-2004=LB7,was the 1ST Duramax GM brought out in 2001 with a Fixed Vane Turbo 2004.5-2005=LLY,came out with a Varable Vane Turbo along with some other upgrades but the one upgrade wasn't realy an upgrade since it causes overheating in some LLYs but not all,also the power was increased in the LLY.. 2006-2007=LBZ,the LBZ comes with a 6SP Allison tranny and some more HP along with the overheating issue fixed 2007.5-and newer=LMM,perty much the same as the LBZ except they have all the new Emission stuff on it along with some more power. __________________ James TyreBoyz Pulling Team Pulling Truck called Late Nights.05 LLY 3500 EC LB DRW tuned By Idaho Rob. Work truck,06 LBZ 2500 CC SB SRW,tuned by Idaho Rob and PPE at times My Truck now,1987 Chevy 2500 350 tweaked,6" SuperLift,350 V8 bored 60 over,Elderbrock headers Cam and Titanium Rockers,750 Twin Pumped Holley Carb and some other goodies.crank dynos over 400HP.