Anything from 2.29-ish up to 4.56s guessing factory, but can go to 7.17s I think. I only want 3.50-3.70, maybe 4.10s. Found a set of 3.70 in a yard here, just have to get a set of 3.73 for an HP. But, there are two axles there already with 3.55, one is already 5 lug and leave sprung. One of them there ext cab fronts, other is a 3/4 ton.