the top three gears of the 10 speed are overdriven. A 3.31 is entirely too high for a 5.0, especially if you travel in hilly country. Sure, a 3.31 will work, but you need to go with a 3.73 if you want to take full advantage of the 5.0s available power.

Thanks for posting this. As an old gearhead from way back, I’m going to print this and stick it inside my truck. I personally think our trucks should be running 4.11s with the crazy high gearing of the top three gears of the 10 speed.

For the past three years I have pulled a 3,000 pound camper in The Ozarks with a 2016 5.0 and 3.31 gears. I felt like the 3.31 was entirely too high (low numerically). I was constantly locking out the top 2 gears to avoid riding the brakes downhill. When in Tow Mode, my truck was always downshifting, even on the slightest uphill grade. An engine needs to be near its torque peak for optimum towing efficiency. My new ‘18 with 3.5 Ecoboost does a much better towing job with 3.31 gears due to its torque peaking at a much lower rpm than the 5.0.

I’ve got a 5.0 157” with 3.31’s. With the 6 Speed it’s great on the interstate. Around town it’s a truck... if I want to be “sporty” I’ll drive something with 2 doors and a clutch pedal.