I plan on gettin my truck regeared next week and need your guys opinions. I have a 07 extended cab fx4 with the rize 8" on it. I am running 36/14.50 on 20" wheels right now. I might add more lift and run anything from a 38-40 when it needs tires. I also have the stage 1 kit from troyer. On the xcal 2 i dont remember seeing a option for 4.88 gears only for 4.56. Is there a way to get everything set right if i go for the 4.88s without having troyer make new tunes? If not do yall think ill be fine with 4.56 with my current setup and if i decide to go bigger later will i still be fine? I would rather do things right the first time.

 

don't know what engine you have but with 38-40's I'd definately be running 4.88's

 

its the 5.4

 

4.88's

 

36" or 38" tires, I'd go 4.88

If you put 40" tires on, I'd look at something even shorter, like a 5.13

 

does anyone know if the xcal 2 has the option for 4.88's? i would rather not have new tunes made just for a gearing swap. i havent seen a 5.13 for the 8.8 reverse cut, do you know of anyone that makes them?

 

Not sure if tey offer reverse cut...I'd call, these guys have it all:
http://www.ringpinion.com/ProductDet...px?ProdID=1953