3.23 to 3.73 swap 2020 1500 duramax?

[handirado]

Is it possible to get 3.73 gearing after the fact? Say if you happened to purchase a 1500 duramax without 3.23 gearing. 

Edited October 25, 2020 by handirado

[CamGTP]

Unless you can get the dealership to do the programming, there is no way to do this.

Edited October 26, 2020 by CamGTP

[Rob Mugs]

4x4 or 2?

 

I don't see why the dealer wouldn't flash it but if you're 4x4, it's a whole nother ballgame 

[bshort]

9 hours ago, Rob Mugs said:

4x4 or 2?

 

I don't see why the dealer wouldn't flash it but if you're 4x4, it's a whole nother ballgame 

The dealer would tell you it wasn't built that way and there's nothing they can do to help.  

[pewterliftedz]

Yes, it will be expensive, especially if you have a 4wd,.  Probably over $2,000 at a reputable shop.  As far as programming goes, you would use the same device that people use to adjust their speedometer for tire height changes.  Rough country and Hypertech devices come to mind right now.

[M1ck3y]

6800 ft lbs. That's in the neighborhood of how much power is going to the ground at max torque in first gear (before drive train losses). Re-gearing isn't what it used to be. It's too bad they can't get a tune on these diesel's though, now that would be something.

Edited November 22, 2020 by M1ck3y