Originally Posted by 07silver4.0Lsport
thanks for all the responses. i'm quite the newbie when it comes to gearing and what not. i have the 3.55 with LSD on my 07 4.0 sport, now if i wanted to build the truck for speed what gearing would i want? i dont plan on running large wheels just stock ofrsomething like it.
It depends on a lot of variables, What do you mean by speed? Acceleration? Or top speed? Stock tires? About a hundred other things to consider. If you want to stick with stock tires, and you want to race from stop light to stop light 4:10's are good. You Probably are going to have to hold back to keep from spinning though. I am guessing 235/75/15's for tires with that small of gearing from the factory.