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Chevy/GMC Duramax 04.5-05 LLY Discussion of Chevy and GMC Trucks with LLY Duramax Turbo Diesel Engines

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  #1  
Old 12-07-2012, 08:52 AM
Diesel Fan

matt high bajachevyhigh
   

Default duramax lly bottom end

just wondering hp rating for duramax lly pistons push rods connecting rods

bajahigh's Sig:99 chevy 400xxx miles 6.5 diesel 40hp marine injectors, air intake 4in straight pipe 80hp ssd chip pmd and #9 resistor fuel pump screw

2004 chevy duramax LLY edge evo ht chip 238xxx miles
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  #2  
Old 12-08-2012, 02:33 PM
Diesel Wrench

   

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This is different for every engine but most would say you are in the danger zone when you approach the 600hp mark, then you better start thinking about head gaskets, studs, rods, pistons, etc.

2004LB7's Sig:2004 LB7 Duramax, EFI Live with DSP5 upgraded Tune
stage 4 SC transmission,5" exhaust
160 lift pump, homemade dual fuelers
water injection, 305/70/16 tires
all built up from a salvaged vehicle by me
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  #3  
Old 12-08-2012, 02:41 PM
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alligatordiesel
   
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I would defineatly look into headstuds. But at 600HP and good EFI tuning by Idaho Rob or the guys at Duramax Tuner you can safely run at those power levels.

Farmboy 2.0's Sig:2001 Dodge Ram 2500 with 2 Big Shiny Spiny Things, Some Big Ol Sticks, and a Man Pedal!
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