I want to put 411's in a 28 axle and have 31 inch tires. what does it mean when it says gears must use 373or higer case? it has 346's in it now with a 2.3
That means your current gears have to be 3.73:1 or higher ie: the geras you have in now are higher gears than the 3.73:1 ratio in order to put this set of gears in. YOU CAN PUT THESE GEARS IN YOUR TRUCK