i am with spshultz my truck is not liking the 18s with the 3.55. I am just wondeirng with this what is the best 4.10 to go with, like do i go with oem or the auburn lcd. Is the auburn lsd better? and is it worth the money or stick with oem?

 

Definately 4.10s, I love them. Like said before, ensure you do the front as well.

 

thanks again blown

 

How do you adjust the speedo to accomodate the 3.92 or 4.10 gear ratio ?

 

Use an SCT, Hypertech or Super Chips programmer. Or I think maybe even the dealership could do it.