I have a 06 2500 HO 5.9 4x4 Quad Cab Big Horn Short Bed, I was reading the Sticker that comes on the window and it says the rear end is 11.50 limited slip . I have never heard of this gear ratio . I pull a 20ft. travel trailer occasionaly . Is this gear ratio good for fuel milage ?

 

Thats the size of the ring gear not the ratio.
Its either 3.73 or 4.10....3.73 is better for mileage.