When towing with my ram diesel how do I tell when I should downshift. it seems to tow so easy, but slows when going uphill at 60 what should my rpm show.
At 2000 rpm the 05 Powerstroke is at its peak torque so it is pulling as hard as it can in the gear that it is in. However the rear wheel torque can be increased 50% by downshifting to a gear that brings the rpm up to 3300.
In other words at 2000 rpm the 6.0 makes 570 lbft of torque and 217 HP.....at 3300 rpm it makes 325 hp.