Hey all, just got a couple questions, i just bought a 04 GMC 2500HD crew 6.6 diesel, and basically i can't find any info on it. what i'm trying to find out is the stock horsepower and torque, ad basically if there's any problems that i should look out for. it's a 04 duramax 4x4 with a 6' fabtech lift, i'll put up pics soon

 

They're good trucks. My dad has a 03 that runs like a raped ape with a little EFILive tuning lol. Factor rated at 300hp 530tq at the flywheel. You have the LB7 motor. Biggest problem they had with those is with injectors failing, but I think that was more in the early years. They have since given the injectors on those motors a 200,000 mile warranty, so you should be good. If you have plans to add much more the about 80-100hp to it (easy to do with just a tune), your gona need a tranny. The stock Alison will slip 5th gear really easy when you put the power to them. Check out thedieselplace.com and you can find out tons of info on it the.

Edit: Oh ya, I have a EDGE Juice w/ Attitude Box off my dads truck if your intrested. Should work on yours. Just PM me

 

you could have a lly or lb7. Look at the 8th digit of the vin number.

 

i believe i have the lb7 motor in the truck, thanks for the info on the stock specs, tuners and the tranny/injector issues. i took same pics after i got off of work but it was already kinda getting dark out by that time so sorry for the crappy night shots