You choose - loaded gas or basic diesel?

Buck50HD wrote:
Just ran some numbers to see how much of a difference it would be, eco vs 6.2, for power in each gear. It just so happens that the engine speed is almost identical between the two trucks for all gears. Here is the power deficit of the 6.2 in each gear compared to the eco (approximate numbers from eyeballing Ford power curves). This assumes a speed of 62MPH.

6: -10HP
5: -20HP
4: -40HP
3: -25HP
2: +25HP (peak vs peak, which is debatable because most eco's make 380+ vs the advertised 365HP)

You can see the biggest difference is in 4th, which is where the eco first reaches peak torque of 420 ft-lb.

I was also interested in how the 6.2 compared to the eco if it ran 1 gear lower.

5: +30HP but +400RPM (6.2 in 5th vs eco in 6th)
4: +20HP but +700RPM
3: +30HP but +900RPM
2: +95HP but +1950RPM

So, on average, the eco has about a 1/2 gear advantage on the 6.2 and anywhere from 200-450RPM advantage.

Finally, considering I rarely needed more power than 4th gear at 2800RPM with the eco, the 6.2 in 3rd gear at 3700RPM makes 30HP more. So, I shouldn't need any more than that during our typical trips, even with the 1000lb heavier vehicle.

Haven't hooked up to anything yet but the 6.2 sure sounds awesome! That's one thing I did miss when I had the eco. Can't wait to hook up. Only problem so far is that it's too tall for the garage door opening:S

As they say, torque does the real work, not horsepower. If you compare the Ecoboost and F250 6.2 torque curves you'll see some very dramatic differences. In a nutshell, the Ecoboost delivers 420 ft. lbs. of maximum torque at a very low, diesel-like, 2500 RPM--the 6.2 develops 405 ft. lbs. of maximum torque at a much, much higher 4500 RPM. You're definitely gonna notice the difference in torque curves the first time you tow with the F250.