07-08 6.2 (380hp) vs 09 6.2 (403hp) - What's different?

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07-20-2011, 08:11 AM

#21

LBSBLOWN

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Quote:

Originally Posted by Jeffyboy

Have you guys noticed, too, that the SUV 6.2s are tuned for 87 octane while the trucks want 91? They're rated at the same power level, too. Seems strange.

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My Yukon XL Denali stock came tuned for 91 priemeum fuel only it say it write on the fuel door.

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07-20-2011, 09:06 AM

#22

redneck08sierra

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was the question originally asked answered or did I miss it? Curious to see

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07-20-2011, 09:46 AM

#23

Jeffyboy

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LS,

What year is your XL? I was looking at 2011 specs on gmpowertrain.com.

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07-20-2011, 12:20 PM

#24

LBSBLOWN

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Quote:

Originally Posted by Jeffyboy

LS,

What year is your XL? I was looking at 2011 specs on gmpowertrain.com.

Its a 2008 but I have the 403hp 2009 Escalade tune in it.
It came with the 380hp and required Preimiem 91 fuel.

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07-20-2011, 02:26 PM

#25

2000silvrx81

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On most sites it is showing 403 HP advertised on the 07-08's

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07-20-2011, 08:06 PM

#26

supercharged680

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the escalade had the 403 HP from 07.. the Yukon Denali had the 380 HP from 07-08.. 09+ their all 403 HP.. i know for sure the 09 has no AFM.. dont know about 2011 though

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07-20-2011, 09:17 PM

#27

tiffo60

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Quote:

Originally Posted by supercharged680

the escalade had the 403 HP from 07.. the Yukon Denali had the 380 HP from 07-08.. 09+ their all 403 HP.. i know for sure the 09 has no AFM.. dont know about 2011 though

What about the 08 Sierra Denali? Would it be the same as the Yukon?

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07-20-2011, 10:10 PM

#28

Rhino79

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I know that the cam phasing is different between 07 and 09. There is also a ign timing modifier based on cam phaser position, that adds or subtracts from the final timing. The 07 Escalade I just tuned did not have AFM.