Having both this is my first real road test empty. 2021 hemi 8 speed with 4.10's vs. 2014 hemi 6 speed with 3.73's. Total of 453 miles. 200 miles at 75 mph, 100 miles at 65 mph, and the balance pulling 4 high mountain passes with steep grades and slow curves.
The 4.10's allow the cylinder deactivation to engage often while with the 3.73's seldom engaged.
Evic reading read 18.7 while actual hand calculated was 18.26.
I think with the 4.10's running on 4 cylinders more than the 3.73's the improvement is understandable.
I also was running 85 octane as our regular gas.
Notice the range that can be expected with the 50 gallon tank.
This is real world test over many driving conditions
Hope it helps those trying to decide on what gear ration they want.
The 4.10's allow the cylinder deactivation to engage often while with the 3.73's seldom engaged.
Evic reading read 18.7 while actual hand calculated was 18.26.
I think with the 4.10's running on 4 cylinders more than the 3.73's the improvement is understandable.
I also was running 85 octane as our regular gas.
Notice the range that can be expected with the 50 gallon tank.
This is real world test over many driving conditions
Hope it helps those trying to decide on what gear ration they want.