Now that I have the new torque converter, I'm getting a lot more consistent power.

I had a previous 2010 Screw 4WD 6R80 trans 5.4L w/3.55 LS axle truck. Supposedly the 5.4L is said to have better torque from 2000 rpm to 3500 rpm. That's flywheel torque which tries to simulate power losses from accessories such as power steering, alternator, radiator fan and the such.

After driving the 2010 5.4L truck back to back with the new truck and back to back with a 2012 truck configured the same as my 2012 5.0L but with the 3.55 open diff/axle, I can say that the wheel torque is definitely in the favor of the 5.0L.

After 3500 rpm, the already greater power of the 5.0L just keeps bettering the 5.4L, the higher it goes in the rpm range.

Every time I drive the 5.0L, I'm just amazed by what great power it has in the lower rpm range for such a small displacement engine.

This thing pulls hard and just keeps pulling harder, the higher it gets into the rpms.

The 5.4L pulled good but no where near as hard at any rpm as the 5.0L.

The 5.4L was a very good engine, but this 5.0L is just so much stronger.

After almost a year of owning this 5.0L, I'm still amazed by how much power this drivetrain has. It makes pulling my 29' travel trailer such a breeze in high winds or hills. The 5.4L did a great job as well, but the 5.0L just makes it so much easier.

Lately I've been just enjoying the power, now that it runs strong all the time since the torque converter replacement.

 

Glad you're enjoying it! I love the power of my 5.0. It's as strong (if not stronger) with 35's and no tune as my Sierras were with 33s and a custom tune.

 

can i asked what happend to your TC!? <- the original

 

You can read about it here.

 

glad to hear the 5.0 gasser is better then the 5.4L even after a year of seat time.

 

Quite a bit better. The truck is just so powerful it's a very noticeable difference.

The power under 3500 rpm is so strong is just gets up and goes, then the power just continues to get stronger. The 5.4L had good power down low but not as powerful as the 5.0L. Also the 5.4L's power didn't ramp up as well past 4000 rpms, as did the 5.0L's power.

Don't get me wrong, the 5.4L was a great engine for power down low, but with Toyota's and Dodge's more powerful 5.7L, it just fell short in comparison to those powerhouses.

I have to stay that the performance differences that "Motor Trend/Truck Trend" and "Car and Driver" magazines found is very noticeable in the drive.

"Motor Trend/Truck Trend" and "Car and Driver" stated the 0 - 60mph for the 2009 F150 5.4L Screw 4WD short bed truck was from 7.9 sec to 8.1 second with both magazines stating a 16.2 second 1/4 mile time.

This time is not bad at all, and pretty impressive but not compared to the faster times of the more powerful 5.7L competitors out there.

Those same magazines stated a 0 - 60mph time of 6.7 seconds to 6.9 seconds and a 1/4 mile time from 15.1 seconds to 15.3 seconds. This is a great time, bettering some Mustangs and Camaro V8 cars with an auto trans from yesteryear.

You can definitely feel the difference in how much more powerful the 5.0L is at all rpms.

When I first pulled my camper with the 5.0L F150, I immediately felt how much stronger it was down low. I had to really pay attention so that I didn't run away from stop lights. That eats way more gas than is necessary.

Glad I finally got that torque converter replaced, as I have good performance days now, everyday.