The truck was an old Forest Service truck that is why it had the 11" brakes. Since it originally came with the 11" brakes and I never drove it with 10" I do not know if there is any difference. Trucks don't have much rear brake bias anyway because the are so light in the back that the 11' brakes probably don't make much difference on a truck unless you were towing. Bigger brakes won't heat up as fast as a smaller brakes will. It will take less pedal effort to slow down or stop with bigger brakes than it would will smaller brakes because they have more friction area. So if you have to have manual brakes because of a large cam you would want bigger brakes so you would not have to push as hard to stop the car as you would with smaller brakes. I still have the 9" drums and my Valiant that runs low 11's at 120ish and I can fool around to stop the car. I have to jump right on them and have to push damn hard to get it to slow down. It's not scary are anything, I just have to PUSH!7demon2 said