I always thought torque was the king of moving weight. I can't see how making more torque and then using it would be bad for fuel economy.
I can see however that in OD, pushing more torque can be bad. I saw that with a diesel suburban and the 700R4 transmission. We leaned on the pump, and it could hold OF better on hills. However the clutches and such were too small for that much torque in OD and eventually caused failure of OD.
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