The Duramax is a General Motors diesel v8 engine. There are five types of Duramax engines: LB7, LLY, 2006 LLY, LBZ, and LMM. The 8th number on the VIN number will identify the engine type.
(Lb7) 300 (LLY) 310... 320 on LLY's put in trucks in 2006-2007 (LBZ) 360 (LMM) 365
(Lb7)300hp (LLY)310hp and 320 hp on LLY models put in 2006-2007 trucks (LBZ)360hp (LMM)365hp
If the 8th digit in the vin number is a 2 then it is an LLY, if the 8th digit is a D then you have an LBZ
If the truck is earlier than 2006, than 310hp. If it is 2006-2007, than 320hp.
If it was an earlier 2004 truck with the Lb7 duramax (8th digit of VIN would be 1) then it has 300hp. If it was a later 2004 truck with the LLY duramax (8th digit of VIN would be 2) then it has 310hp.
LB7=520 LLY=605 LBZ=650 LMM=660 all are in lb-ft
depends on which engine you have. 2004 was the transition year. look at the eighth digit in your vin # if its a "1" you have a LB7, if its a "2" you have a LLY. LB7 300hp 520ft tq LLY 310hp 605ft tq
Lb7=01-04.5 lly=04.5-05 lbz=06-07 lmm=08-10 lml=11-??
It's doable... not sure how feasible it would be. You'll need the complete ECM and EGR from the 06 engine.... the 2002 would have the pre-ACERT LB7 engine, whereas the 2006 would be either the 6.6 LLY or 6.6 LBZ (depending on when in 2006).
Pros: Healthier engine, cleaner intake, increased performance, increased mileage. Cons: It's illegal. and may void any warranties
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