Sierra Denali Engine

[christophereray]

Does anyone know if, or when, the Denali engine (Vortec 6200) L92 will be offered in a flex fuel version? A GMC rep called me and said it could be out as early as May or as late as 2009 model year. Anyone?

[redsled]

I don't know about future engines, but the 6.2 only runs on 91+ octane (recommended) and will run on 89, but has an distint power loss due to the anti knock system that retards the timing.

[VMax2007]

I don't know about future engines, but the 6.2 only runs on 91+ octane (recommended) and will run on 89, but has an distint power loss due to the anti knock system that retards the timing.

You sure about this? I have my serious doubts. Any references would be nice to see. What's the compression ratio for this engine?

[drew630]

I don't know about future engines, but the 6.2 only runs on 91+ octane (recommended) and will run on 89, but has an distint power loss due to the anti knock system that retards the timing.

I was under the impression that the 6.2L ran on 87 octane. 89 or 91+ wasn't required and not needed. I could be wrong though.

[redsled]

You sure about this? I have my serious doubts. Any references would be nice to see. What's the compression ratio for this engine?

I just bought mine. As I said, you CAN run ANY engine on 87 octane. If you want MAX performance from THIS engine you will need to use 91+. From what I was told, the anti knock system will retard 4-8 deg timing, or as much as it needs to stop the detonation.
I don't know off hand what the compression is, but I could tell the performance difference between the two octanes.

[VMax2007]

I just bought mine. As I said, you CAN run ANY engine on 87 octane. If you want MAX performance from THIS engine you will need to use 91+. From what I was told, the anti knock system will retard 4-8 deg timing, or as much as it needs to stop the detonation.
I don't know off hand what the compression is, but I could tell the performance difference between the two octanes.

If this is true, I am glad I opted for the loaded Sierra SLT with the 6.0 instead of spending the extra $4k on the Denali. Because I would feel the need/desire to buy the 91 octane since I am kind of a "motorhead" and that would raise my monthly gas bill significantly. I am going to opt for a perf tune that will maximize my power and still allow me to run 87 octane.

[christophereray]

I'm currently in the market for a 2007 Denali. What options did you get and what was the final sale price. I want to have an idea when I go in for negotiations.

So far I haven't heard anything from GM on when these engines (6.2) will have a flex fuel option. Seems like Cadillac owners would be asking for it to.

I also hear 2008's will have a HD radio option as well. I think I might wait.

[GeoHawk]

FYI, the L92 has a 10.5:1 c.r.

The L76 6.0L has a 9.7:1 c.r.

[VMax2007]

FYI, the L92 has a 10.5:1 c.r.

The L76 6.0L has a 9.7:1 c.r.

That would explain the higher perf with 91 octane...Thanks!!!

[red_xtreme95]

Dose anybody know if they are going to put the Vortec Max in a 2wd reg-cab like the Dodge HEMI...i would get one in a heart beat...thats all i want...no supersport edition...just a Max single cab 367HP

[VMax2007]

Dose anybody know if they are going to put the Vortec Max in a 2wd reg-cab like the Dodge HEMI...i would get one in a heart beat...thats all i want...no supersport edition...just a Max single cab 367HP

I wouldn't hold my breath, but I don't know anything for sure.

[CRBoyd91]

Dose anybody know if they are going to put the Vortec Max in a 2wd reg-cab like the Dodge HEMI...i would get one in a heart beat...thats all i want...no supersport edition...just a Max single cab 367HP

You can get the 5.3 in there. Not quite as much power, but the MAX would be awfully fun to drive.

[red_xtreme95]

I know...i have to say my buddys HEMI is fun to drive in a single cab

[redsled]

I'm currently in the market for a 2007 Denali. What options did you get and what was the final sale price. I want to have an idea when I go in for negotiations.

Mine has every option available to order (except the steering wheel heater and the block heater. Not real popular options here in California!).
It listed (MSRP) @ $48320.00 and I paid $46720.00 w/ tax and license.
The agreed price was $250 over invoice.
Standard MSRP w/o options and destination charges was $41195. Options was $6225. Plus there was a $1250.00 rebate.



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[VMax2007]

Mine has every option available to order (except the steering wheel heater and the block heater. Not real popular options here in California!).
It listed (MSRP) @ $48320.00 and I paid $46720.00 w/ tax and license.
The agreed price was $250 over invoice.
Standard MSRP w/o options and destination charges was $41195. Options was $6225. Plus there was a $1250.00 rebate.



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Sweet truck!!! May I suggest swapping out the "holey" (cheap) plastic grille with a "CarriageWorks" brand aluminum billet grille? Just my opinion, what matters is what YOU like. Just check it out at least, they are really nice, I put one on mine. The upper one runs around $200 and the lower around $100.