Help With Final Drive Ratio!

[stang233]

2004 Chevy 2500hd 4.10 stock gearing w/ 245/75/16

 

If we put 285/70/17 on our truck what would the gearing be comparable to?

 

I have heard one say 3.80, and another say 3.43 or so, which I believe is false. I think it would be closer to the LD rear end at 3.73.

 

Please let me know what you think. Thanks Richard

[thecraft]

Check out the tools at www.4lo.com, it will give you an effective gear ratio of 3.82