3:73 or 4:10 axle ratio....?

[Sidecar Sylvie]

Hi guys & or gals...... About to order a GMC 2500HD w/Duramax diesel-Allision. Anyone have any input concerning Diff ratio...?

 

[Carl L]

Depends entirely on what you are towing.  How much does it weigh? 

 

[edjunior]

If you're even thinking about it, go ahead and get the 4.10.  The Duramax will do you good, but the 4.10 will really make it solid. You won't regret it.

 

[N Smock]

Hi guys & or gals...... About to order a GMC 2500HD w/Duramax diesel-Allision. Anyone have any input concerning Diff ratio...?

No problem the Duramax only comes with 3.73 rears.

Nelson