Denali Duramax Vs Regular Duramax (slt, Ltz, Sle, Lt Etc)

GUS.975 · August 18, 2011

Hey, the 2011 duramax is listed at 397hp and 765ft-lbs. a buddy of mine swears he saw one in that had a "405hp" emblem on the side of it. My question is, did the denali receive a different engine? or could you get a different engine as an option? Thanks.

greentourismo · August 18, 2011

No, they only came with 397 HP in the duramax. I doubt they would make changes to a denali specific motor to gain a whopping 8 Hp too lol

Hey, the 2011 duramax is listed at 397hp and 765ft-lbs. a buddy of mine swears he saw one in that had a "405hp" emblem on the side of it. My question is, did the denali receive a different engine? or could you get a different engine as an option? Thanks.

GUS.975 · August 18, 2011

That's what I thought too. 8hp as an "upgrade" is barely an upgrade (~2%). That's why I'm asking. Anybody else ever hear of this?

Stevens03 · August 18, 2011

No, they both get the same engine and both have 397hp 765tq. Thats straight off the GMC website

Z45 · August 18, 2011

a buddy of mine swears he saw one in that had a "405hp" emblem on the side of it

The owner put that on there.

btw - The 6.2L gas engine is 405 hp.

pwall · August 18, 2011

Perhaps the duramax in the Denali uses high-performance sparks plugs. After all, they'll make a Civic go faster.

I'm kidding....you all know that....right ?

GUS.975 · August 18, 2011

Ya, that was the other thing I thought. It coulda been the 6.2L. Which makes 407HP I believe. Was that even available in the 2500HD denali though? Anyways, Just wanted some backup before I call him a liar.

jdubub · August 18, 2011

Perhaps the duramax in the Denali uses high-performance sparks plugs. After all, they'll make a Civic go faster.

I'm kidding....you all know that....right ?

blackout07 · August 18, 2011

Hey, the 2011 duramax is listed at 397hp and 765ft-lbs. a buddy of mine swears he saw one in that had a "405hp" emblem on the side of it. My question is, did the denali receive a different engine? or could you get a different engine as an option? Thanks.

It could've been a gasser and not a diesel.

Stevens03 · August 18, 2011

btw - The 6.2L gas engine is 405 hp.

403hp @ 5700rpm and 417tq @ 4300rpm right off GM's website

GUS.975 · August 18, 2011

403, 405, 407...same thing lol.

Is it possible a certain dealership chips them and puts the emblem on? Like a one-off thing? I've seen dealerships up here in canada put lifts on trucks and warranty them. FX4 ford comes with a 6" lift and has an FX6 decal on it. Stuff like that....I dunno.