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JK Talk General discussion forum regarding thoughts, opinions and rumors about the Jeep JK Wrangler or related subjects that don't quite fit in the Modified, Stock or Electronics forums.

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Old Dec 29, 2010 | 09:14 AM
  #11  
db09JKU's Avatar
JK Super Freak
 
Joined: May 2008
Posts: 1,425
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From: Memphis
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My 99 grand cherokee with 4.7L V8 got better MPG than my wrangler.

About 3mpg better in all city driving and 3 better on highway. I had 2" lift and BFG AT 32's on it.
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Old Dec 29, 2010 | 09:52 AM
  #12  
goaterguy's Avatar
JK Freak
 
Joined: Jun 2010
Posts: 786
Likes: 1
From: Charlotte NC
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Apples to apples people.

I can say that the 400hp/400tq 6.0L V8 in my GTO gets better mileage than the Wrangler but there are a lot of other factors here like aerodinamic design, ride height, transmission and rear end gearing, etc.

Why the Wrangler didn't get a more powerful engine? Maybe because the Wrangler isn't designed for high speeds or quick acceleration, better torque curves, cheaper, able to work at the weird angles that a Wrangler may be subjected to (lubrication), etc.

The Chrysler, Dodge and VW Routan minivans still have the 3.8L.
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