@Ben Hardy: what gears did each truck have? That might explain things…

A couple of things to note. 1. 7.3 runs slightly lower compression, so you’re probably feeling the response difference in the throttle (not torque). 2. The 6.8 runs the 10R100, so less parasitic loss than the 10R140, which probably gives you better performance. 3. The longer stroke in the 7.3 means the pistons are moving faster at the same crank rpm. So it probably sounds like it’s revving harder.

Got a brand new 2024 6.8 xlt 373 I have 900 miles on it . Went on 400 mile trip got 16 mpg highway and a little round town . I hand calculated it. This truck drives like a dream shifts smooth and plenty power.

6.8L - then again I'm biased because i have one. i'll get about 12 mpg city and 16.6 highway, but towing my 7600 LB RV trailer, 9.5 MPG at 68-70 mph, 10 mpg or more at 65 mpg, 11+ 55 MPH, and that's with 3:73 gears stock 18 inch tires. Hadn't head of any engine issues with these 6.8L and hope it remains that way!

I test drove both of these engines also over the holiday weekend. Just driving around town the 6.8l felt more responsive and just as smooth on the on ramp up to 70 mph getting up to speed. Now when I stopped both trucks on an 8% uphill grade street and took off from a stop the 7.3L did have a little more pull especially when it hit 3000 rpm. Both trucks had 3.73 gearing. You can get a 6.8L with 4.30 gearing which I've found at some dealers but I think mpg wise you might as well get the 7.3L if you need the extra grunt. The 6.8L will take the fleet sales volume as those uses don't need to idle a 7.3l all day long, might as well have an engine that's a little more efficient for those uses.

Ben did you check the rear end ratios?

Need to know axle ratio in each truck. Different transmissions for each also

You confirmed my suspicions, thank you. The 6.8 feels spicy.The smaller transmission has less parasitic drag and the actual power difference is probably more like 15-20 hp. Need them on a chassis dyno to know for sure. I think they rate the 7.3 optimistically and the 6.8 spot on.

I suspect there is more hp/tq the Trans is robbing from 7.3 vs 6.8. Since there done what difference. Maybe it’s in the trans torque converter

@Ben Hardy: Do most Super Duty owners who pay the $12,500 extra for the high output PSD actually use it for what it’s built for?

Give me the 7.3L Godzilla 😎

Probably feels slower becauae its pulling more weight..

How do u tell which is a better engine with a 5 minute drive?

The 6.8 provides a less expensive option for fleet sales; if a your a business and need 10 of these the savings adds up pretty fast.

Like both trucks are cool

Purpose of the 6.8L…I would imagine higher payload capacity for a simple work truck with a long bed. Just a guess though.

6.8 had 4.30s, 7.3 had 3.73s. Look at the highway RPM.

@Ben Hardy: Why did Ford bother with the 6.8 after getting rid of the 6.2L Boss engine? The 6.2 was a champ while the 7.3 has had issues and since the 6.8 is related to the 7.3, I would be wary…

No one wants to drive a minivan, so they try to arrive as quick as possible… at least that is why I drive like a maniac in my wife’s minivan

6.8 because im cheap.

I bought a 1986 F-250 4x4 new with the 300 i6 and a 4 speed with granny low. It wouldn't go over 65 mph but it would pull a house off it's foundation I think....

Going around the block isnt gonna tell you much....

The 6.8 exists for one reason and one reason only: marketing. It allows them to upcharge for the 7.3. The two engines are essentially identical with minor changes, and the 6.8 trucks get a weaker transmission. Fuel economy, driveability, etc. is going to be identical between the two. There is NO WAY I'd buy a 6.8 truck new.

Better at what? Either one will do what you need. Contrary to popular belief, capability depends on the truck itself. Any modern engine is plenty powerful enough to do what needs to be done, which is why the f550/650 with the 7.3 godzilla and 6.7 are detuned and have less power than the f250. Power is not a problem with modern trucks. Just got to decide if you want more power, more mpg or the emissions reliability and maintenance disaster of a modern diesel.

It’s crazy how a 3.5 ecoboost has technically more torque the these two engines but for the half ton segment

This was 4.30 vs 3.73

14R100 behind the 6.8...hard pass. Also, the 6.8 uses a cast crank vs the forged crank of the 7.3. cost cutting... The 6.8 is a fleet engine.

Easier to add a turbo to the 6.8l

These motors are $18,000 to $19,000 on Ford's website.

100k trucks that don't sell. Many cooler options for 60k

Great video but Nissan Altimas are the worst drivers 😂

I would take the 6.8l the 7.3l has had valve train issues

Bud, you seem like a nice dude, but you’re killing me. The motors use the same block, displacement is internal. Negligible weight difference. And they only offer the 7.3 to charge a few bucks more, use the “7.3” moniker (a la OG Powerstroke). There’s no good reason to buy the 7.3 while the 6.8 exists. It’s just marketing, as it costs them zero additional dollars to build the “larger” motor. Aside from an insane amount of dead time, your review effectively shows that the butt dyno agrees. Snake oil.

BUTT DYNO HAS NOT BEEN CALIBRATED.....

They detuned the 7.3

From what I hear, the 6.8 feels faster than the 7.3.

Get a haircut and a shave!!!

Nah 6.7L Diesel is better

Failed engines as usual from the American industry