I am getting my rear end worked on(LOL! that just sounds funny as hell)tommorow with the 4.10s and eaton. Now I know the predator will not adjust for the gear swap as of now. So does anyone know what I will have to set my tire size to, to keep my speedometer accurate, or is there a calculation that I can do? Someone listed a site that had tire size settings, but it did not show a 3.73 to 4.10 change. I am running 275/45/20s now, and the stock tire was a 255/70/16. Both come in at right around 30"s, so I just need to know what to set it at from my current setting.

Thanks, the help would be appreciated.

Oh, yeah, will I have to change my shift point settings on the predator to continue to keep it shifting correctly?