Forrest,
Do you mean that you want the torque converter to slip?
Are you running with the Allison in Economy Mode? That will cause it to stay in a higher gear longer in rolling hills.
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Richard Rhonda Ty and Alex Entrekin
1995 Newell # 390 DD Series 60, Allison World Trans
Subaru Outback toad
CoMotion Tandem
Often wrong, but seldom in doubt
Rhonda's chronicle https://wersquared.wordpress.com/
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