rpm when towing
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.
Forum Discussion
rhagfo wrote:4x4ord wrote:VoodooMedicineMan wrote:
Next time I am going to try that. 3300 seems awful high.
There is nothing really wrong with what your doing it just means that you will go slower up the hill. Anyway the way to maximize your speed up a long hill is to start by anticipating the hill. By that I mean downshift before the truck begins to slow down.
So if you are going 60 mph in high gear with 3.73 gears your engine will be turning about 1713 rpm. Drop two gears and you should be travelling 60 mph and revving 3117 rpm. If the truck is pulling a long steep hill it can slow all the way down to 42 mph before you can shift again. At 42 mph your engine will be revving 2183 before the shift and 3500 after the shift.
Well don't know the listed red line on the Cornbinder 6.0. but 3,300 rpm would be 100 rpm over my CTD 5.9's red line.
I don't like taking it much above 2,500 as that seems to be the point power flattens out.
Thats cause the Cummins is most at home at 2100rpm. Peak torque. Everyone gets caught up in the HP craze. Horsepower doesnt do crapola for pullimg grades. Gear it for peak torque and let it pull.
