I saw the numbers they say the new engine will give the JK 260 ft-lbs of torque and 290 horse power compared to our 202 hp with 237 ft-lbs of torque with our current engines.

Will it be a really big difference? I heard two more miles per gallon but I test drove the new cherokee with that engine and I really wasn't impressed

 

It should be better in the JK. The Grand is quite a bit heavier.

 

Time will tell; i think its a step in the right direction, but not the cure for those filled with 3.hate

 

Don't forget, those numbers are in the top portion of the rpm range. How often do you operate the Jeep at those rpm's?

A better comparison would be to look at the dyno charts, and look at the area where you usually run the engine.