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At what speed does a factory 2004 Allison shift from 3rd gear to 4th gear? 2004 LB7 D/A 4x4 3.73 rear with 285/75/16 tires...
 

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Discussion Starter #3
Assuming full throttle.
 

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It should do the WOT 4-5 shift at 3200rpm. I'm not sure what speed in mph that is. This is what my Stock OEM trans program is set to.
 
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