HamBone is right. 4.10s are actually great for bout anything up to 35 then you're gonna want 4.56s. Some have even gone to 4.88s (hard to find for 1/2 tons but it's possible, you have a 2500 so no worries) with 35-37s.

 

ya im about to get 4:56 for my 1500, rolling around on 35s, the tranny hates it, so i just drive her around nice and easy till i get the money together. Truck goes around fine, but i cant really feel its frustration going from a stop especially when its cold. Need gears soon ha