Automotive

How does a F350/450/550 only have 288HP from a 6.8L V10?

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How does a F350/450/550 only have 288HP from a 6.8L V10?

https://media.ford.com/content/dam/ford ... r-Duty.pdf

6.8L V10 sounds monstrous. But according to these specs its only 288hp.

Why so little? Its such a big truck. It needs lots of torque , but why is hp so much less then the torque?
V10 isnt that the same as the old M5’s? They were like a rocket ship.
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Because Diesel Engine?
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The Ford V10 is basically the same design from when they released it in the late 90's and they haven't bothered to update it since it's so low volume. The power number's seem low now for a V10, but the 300HP 430TQ was quite a bit more than the 230HP 330 TQ the equivalent V8 of the time could produce.

The only customers that order it are typically motorhomes or rentals. You won't see it in a commercial trucking fleet due to bad mileage.

You really can't compare it to the BMW V10, cause that engine pure trash to own.
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It has lots of hauling power (needed) and a lot less passing power (less needed).

This is designed to move a lot of something around slowly .. horsepower is a lot less necessary than torque.
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It's a low stressed engine. Its designed to make power without much effort or stress so it will last a long time. The S85 may make a lot of power but if you even think about delaying an oil change it'll spin a rod bearing. The Ford V10, on the other hand, can be abused, maintained poorly, and it'll keep going.
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UrbanPoet wrote: https://media.ford.com/content/dam/ford ... r-Duty.pdf

6.8L V10 sounds monstrous. But according to these specs its only 288hp.

Why so little? Its such a big truck. It needs lots of torque , but why is hp so much less then the torque?
V10 isnt that the same as the old M5’s? They were like a rocket ship.
That sheet is from 2018. Pretty sure that engine isn't available anymore and they have all new engines for their commercial trucks. The V10 was sold as a commercial unit, not for private use really.
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Kenneth wrote:

You really can't compare it to the BMW V10, cause that engine pure trash to own.
LOL what? Please tell us about your own personal experience with the S85.
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Because it's designed to provide full torque from idle. It needs that to get heavy loads moving. The trade-off is that torque falls off pretty early, so it doesn't rev high and have a big HP number.

If the Ford V10 made it's maximum torque at 6100 rpm like the BMW V10 does, it would have 490+ hp. But that would be pretty useless as a work truck.
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Not sure you understand how engines work? Or why engines are designed a certain way for certain applications?

Engines don't output horsepower, they output torque. Horsepower is a function, with only two variables.

Also the redline of this engine is something like 5200RPM.

Atmospheric + low RPM + gasoline + not really that much displacement = mehhhh.
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Apr 5, 2017
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That V10 was supposed to bridge the gap between the V8 and the turbodiesels.

Main thing was torque for the applications they were used in. RV's, boats, Uhauls, chassis dually/cutaways, etc. Terrible fuel mileage, but they said would make up for it by not being extremely expensive to maintain like a turbodiesel truck.

They recently discontinued them finally, and brought in a new 7.3L pushrod gas V8 with the name "Godzilla". 400ish HP and that's conservative factory tuned. With some bolt on/tuning/breathing mods they were getting 600hp out of them while remaining naturally aspirated.
mxthor3 wrote: LOL what? Please tell us about your own personal experience with the S85.
Weren't the bearing in them fatally flawed? And the SMG transmissions attached to them. Expensive all around to own. Sound incredible though, and the E60 M5 sedans they came in are timeless looking. I don't like the M6 so much as I do that beautiful M5.

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The M5 S85 is a race engine. Race engines require regular rebuilds. That engine is tuned for HP, and not torque. You have to rev the engine up way high in the band to get any power out. The Ford V10, all the power (torque) is down low.

The Ford v10 is a torquey iron block. Low stress, push rod I believe, and is made to go 500k kms with just oil changes, coolant, and spark plugs. It also has not been updated since the 2000s I believe. Also the 6.8L is just a v10 version of the 5.4L Ford block which was in all the F150s. It was also in the Ford GT but made differently with different parts like some forged interals and an aluminum block instead of iron block.
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I currently own 4 f550 diesels (2017-19) no motor issues at all ('17 is pushing 400k's)

..owned a f550 v10 ('17)....never again...too much bs ...had GMC 5500 and 7500 gassers...gmcs were great but ok (they stopped making in 09)... gmc 8.1 > ford v10...never had any probs with gms (propane) ...cant say the same for ford (v10)

now.. I have always been a fan of Duramax...however...the Ford diesels have been consistently more reliable than the GM's in the last 5 years or so. (motor wise)
Last edited by cardguy on Dec 12th, 2020 8:12 pm, edited 1 time in total.
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Kenneth wrote:

The only customers that order it are typically motorhomes or rentals. You won't see it in a commercial trucking fleet due to bad mileage.
Sure you will. My company has dozens of F450s and F550s, all with v10 gas engines. If nobody bought it in F450s and F550s, then Ford wouldn't make it an option.

mileage-full-tank-according-your-cars-s ... #p28941123

37l/100km.
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aleks wrote: That sheet is from 2018. Pretty sure that engine isn't available anymore and they have all new engines for their commercial trucks. The V10 was sold as a commercial unit, not for private use really.
The were available on F250s and 350s, and the heavy duty vans, and the Excursion, late 90s to mid 00s depending on model.

I had a single-wheel F350 with the v10 as a work truck briefly back on 2006.

But it wasn't the biggest engine of the era... GM had an 8.1l v8 in the HD pickup trucks and Suburbans at the time.
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tehwegz wrote: Weren't the bearing in them fatally flawed?
Rod bearing replacement in a lot of BMW designs is basically a periodic thing; main bearings, yeah probably those too on the high perforamance engines. The tolerances are extremely close and as iHop mentions it's basically a race engine in design.

This is where we start to get into "budget baller" territory because the engines weren't designed to be long-term high km solutions to begin with, so when the cars get to that point (lots of years and miles) the cars require a lot of money in maintenance and repairs and the owners don't want to deal with it so they sell them off. The second owners of course because the first owners gave them up after the lease was over :lol: Some people liken this to being "unreliable" but a lot of times that's not really the case, it's the fact that they cost a lot of money to maintain, more than the cars are worth sometimes, due to the depreciation caused by the fact that the market knows how much money needs to be put into them to keep them going.

If you like the "beautiful" M5 you can probably easily buy and enjoy one these days, if you're prepared to fork over the money for everything you'll need to after the low purchase price of the car that is. Just don't be that "budget baller" guy that buys one because it's cheap and then drive around with everything broken and complain about how much it costs and keep trying to band-aid it to keep it going, ghetto style.
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tehwegz wrote:
Weren't the bearing in them fatally flawed? And the SMG transmissions attached to them. Expensive all around to own. Sound incredible though, and the E60 M5 sedans they came in are timeless looking. I don't like the M6 so much as I do that beautiful M5.
It seems like rod bearings are considered a maintenance item with a few of the BMW engines (S85, S65, etc) But yeah the SMG transmission is definitely the downfall in that model, you want the 6spd manual for sure. You definitely need to understand what you're getting yourself into with this car but it will be one for the ages. There's nothing out there like that V10 to be honest.

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