on the 1999-06 trucks, can anyone tell me from experience, if the 5.3 tows a lot better than the 4.8, given they have the same rear gear ratio..?I know theres not much difference in the torque and horsepower numbers, so am really wondering.. I have a 1999 ecsb 4x4 3.73 gears, and tow a boat that weighs around 3100 lbs with trailer and it has to downshift constantly to go up any incline and it struggles more than i like. My buddy has the same truck, same gears, only his has the 5.3 and he tows a little heavier boat and says his doesnt struggle at all, goes right through the hills and all with no constant downshifting. anyone have any real world experience between the 2 engines towing? heck, my old 1989 with the 5.7 TBI, didnt care how heavy the load was, it would hold 70 down the interstate through hills and all!