I am planning to change the gear in my truck and can't decide if I should go with 4:56 or 4:88...........right now I have 37 inch tires but when it comes time for new one's I am going to go with 38.5 or 39....but that won't be for at least another year or so............What do you guys think.......will 4:56s be enough?

 

There was a calculator somewhere ( can't remember now ) but I seem to think the 4.88 gears are gonna be closer to stock using the 39's.

 

Try the calculator on this site, www.4lo.com it may help.
Jm

 

go with 4.88's or bigger man and get that big f***** movin out the hole

 

I would proly go with 4.88.....

Seth

 

4.88's, smoke em too!

 

The guys that are going to do my gears are trying to talk me into going with 5.13s what do ya'll think?

 

I would go with your future plans in mind. If you really are gonna go 39" or bigger do the gear swap once instead of multiple and hit the 5.13's else the 4.88's are more than enough.

 

5.13 it is......

 

The truck is in the shop now I went ahead and went with the 5.13s can't wait to get it back and see what she can do.