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5.3 vs 6.2 mpg


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I get 23 mpg in my 6.2 with a super charger. personally I don't see any benefit to getting the 5.3 other than if you simply don't want to spend the extra money.

Well Ill answer that, when I got mine the Texas package out the door was 31K loaded pretty good. The 5.3 on corn is 380 HP. The left over Denali I was looking at was 15K more. AS loaded as the Texas package is its hard to justify for the differents in HP. That with supercharging in mind is a fifty HP differents, according to the web sites between the two and is paid for by buying the 5.3 and then some. If it was just a 2500$ upgrade on the Texas package I would have bought it.
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+1... using people's mileages in the forums is kind of useless unless they are located in the same region as you with same conditions and truck model. I live in Florida and CT during the year... just got back from my first stay in FL with the truck and was literally averaging 4 MPG more down there compared to the hilly stop & go conditions up here in CT.

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I reset my Trip A with every fuel up. I usually see mileage between 16-18.

 

My Trip B I haven't ever reset. That average shows 16.6mpg. And I also track my MPG with fuely, which shows me 16.5 mph since I've had it.

 

5.3, 3.42 gears. 10868 miles

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  • 4 weeks later...
  • 2 weeks later...

I reset my Trip A with every fuel up. I usually see mileage between 16-18.

 

My Trip B I haven't ever reset. That average shows 16.6mpg. And I also track my MPG with fuely, which shows me 16.5 mph since I've had it.

 

5.3, 3.42 gears. 10868 miles

 

 

I average 15.5 with a best of 17.8 on 91 octane. Just over 11,000 miles

 

My Mod list:

3.42 gears 5.3L

6" fabtech lift

400lbs total: (22" toyo open country mud terrain and 22x11 fuel hostage wheels)

AFE Momentum GT intake

AFE Exhaust

Chucks Custom Tuning Tune ( Houston, Tx )

 

 

These posts make me feel real good about my mileage. I also have about a 50/50 mix on city/hwy driving conditions.

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I average 15.5 with a best of 17.8 on 91 octane. Just over 11,000 miles

 

My Mod list:

3.42 gears 5.3L

6" fabtech lift

400lbs total: (22" toyo open country mud terrain and 22x11 fuel hostage wheels)

AFE Momentum GT intake

AFE Exhaust

Chucks Custom Tuning Tune ( Houston, Tx )

 

 

These posts make me feel real good about my mileage. I also have about a 50/50 mix on city/hwy driving conditions.

 

Pretty good for a lifted truck. I'd say my driving is about 80 city/20 hwy

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