Hey guys, can anyone tell me the aproximate difference in fuel consumption between the 1500 with the 5.3 compared to the 2500 with the 6.0l gas engines? I tow a fair amount with my 5.3 1500, however I have been looking into the 2500 6.0l and was hoping someone could give me some reviews on the larger engine. Eg: Towing capacities, fuel consumption, do you recomend going bigger? ect. Basically, is there much difference between trucks?

Thanx for any help
Quickie

 

My 2003 1500HD with the 6.0 averaged 10.5 to 12 MPG in town with about 13.5 MPG highway. I had a cold air intake, magnaflow exhaust, custom PCM(computer) tune and electric fans. My new 2006 1500 with the 5.3 is averaging 15.5 MPG but I only have 600 miles on the truck so that number will improve. The 6.0 will have a little more grunt as well as being backed by the stronger 4L80e transmission. If you choose the 5.3, make sure it has a towing package- 3.73 rear gears and transmission cooler.

 

if your really into towing, get a duramax, best for towing bar none