3.31 gears at 40,000 lbs gross.
Just to give a bit of a feel for how different gear ratios would behave while towing I locked out 10 then 10th and 9th then added them back again while travelling on a straight stretch of road w...
Forum Discussion
4x4ord wrote:Lynnmor wrote:
Obviously some don't care, but hopefully an intelligent discussion won't use the who cares attitude. Some want the best for their equipment, there is no need to talk down to them.
I wouldn’t say “who cares?” But I think it is an honest question to say “why would a person care?” Will the Ford driveline last longer transmitting 200 hp at 2400 rpm than it will transmitting 200 hp at 2000 rpm?
Yes, the transmission will have a much greater chance of lasting with shorter gears. Just about every 6R140 through our nine Ford dealerships with burnt or grenaded overdrive clutches was with a taller gear ratio and/or heavy oversized tires. The same goes with our fleet which is why we don't put tall gearing on the trucks that haul or tow often. The instances of failure are even greater on the oil field repair trucks that we have to put heavier mud tires on.
Most u-joints can handle the abuse, but the trans cannot and it is better to get a shorter rear gear if you are towing that heavy on a frequent basis. There is a reason why shorter gears can tow more and it isn't just because of higher rpm or torque multiplication. It also has a lot to do with driveline stress and longevity when towing heavy. It probably isn't going to affect you because you don't keep your truck that long, but it might affect the next owner.
