Speedometer Re-Calibration w/ Gear Swap?

[farm boy]

Getting gears put in my 2002 F-250 4x4. Going from 3.73 to 4.30.

Does the speedometer need to be re-calibrated after the gear swap, or do these trucks have a sensor that reads the tone ring on the ring gear which doesn't require recalibration?

Thanks.

 

[suprhlr]

Speedo pickup is off the tone ring, will read correct after gear swap

 

[farm boy]

Thanks!