Ford eco boost

[Farmer495]

OK, general question, even though I'm quoting deserteagle71:
If this 3.5 Ecoboost can pull like a diesel, then why are they building 7.3 Godzilla engines? This is 446 cubic inch of pushrod tech. The hp numbers are almost the same, but torque actually favors the 3.5.
3.5
Horsepower: 400 horsepower at 6,000 rpm
Torque: 500 pound-feet at 3,100 rpm

7.3
Horsepower: 430 Horsepower @ 5,500 rpm
Torque: 475 lb.-ft @ 4,000 rpm (<2023) 485 lb.-ft (2023+)

I've never driven anything with the 3.5, but have a 2022 7.3. Why not make the 3.5 available in the SuperDuty? The mileage would be better (at least in theory). I wonder what the torque is down around 1000-1200 rpm, like when you first take off with a load.

The 2011 3.5 ecoboost peak torque is 420 ft/lb at 2500 RPM, exactly the RPM my old 7.3 Powerstroke came alive at.

Not sure the duty cycle / cooling for a Ecoboost running max capacity all day every day.

 

[Farmer495]

The 3.5l eco-boost is good for the F150 and that's about its limit.
Numbers alone do not decide application.
My 6.2l F250 pulls 11.2k to 11.7k or so during shredding season. I have to set cruise control to 60 mph cause it'll hit 80 in no time.
Yet, when getting settled in to unload in a unimproved pasture, the low rpm grunt of the 6.2l makes this an easy peasy task.
The 3.5l would not last in those conditions, nor pulling a 14k cattle trailer out here.
Lots of turbo load on those cute little pistons and con-rods, yeah don't think the Ford engineers designed them with low speed high torque demand on long stretches of highway in a super duty either.

Now on the other hand I've learned from a fella on a truck channel that Chevy's new 1500 has added a 2.7l turbo that is built ground up on a diesel platform, made to be solid performer.
Yet Chevy still uses a 6.6l gas and a 6.6l diesel, for the 2500.
This may still not be enough to answer your question, but it was the best I had! heh...have a good weekend y'all...

Don't think I'd want 14k on a half ton. I have a smaller than that cattle trailer and it handles that one fine.

My old 2011 turns around 1900 RPM in 6th gear @ 70 MPH towing and will do it all day. I run in "M" and skip the tow/haul crap.

Ford did design these to run hard at low RPM within the weight they are rated to tow.

 

[grsthegreat]

Ya, my 150 is for hauling a bed full of generator parts on a sliding bed…maybe 1500 pounds at most. I will tow a small enclosed trailer occasionally. For heaver loads ill stick to the f350 diesel.

 

[number two]

I always remember the old saying-
There's no replacement for displacement!
Good Day!

 

[sd455dan]

The 3.5l eco-boost is good for the F150 and that's about its limit.
Numbers alone do not decide application.
My 6.2l F250 pulls 11.2k to 11.7k or so during shredding season. I have to set cruise control to 60 mph cause it'll hit 80 in no time.
Yet, when getting settled in to unload in a unimproved pasture, the low rpm grunt of the 6.2l makes this an easy peasy task.
The 3.5l would not last in those conditions, nor pulling a 14k cattle trailer out here.
Lots of turbo load on those cute little pistons and con-rods, yeah don't think the Ford engineers designed them with low speed high torque demand on long stretches of highway in a super duty either.

Now on the other hand I've learned from a fella on a truck channel that Chevy's new 1500 has added a 2.7l turbo that is built ground up on a diesel platform, made to be solid performer.
Yet Chevy still uses a 6.6l gas and a 6.6l diesel, for the 2500.
This may still not be enough to answer your question, but it was the best I had! heh...have a good weekend y'all...

Agree.
jmo, Mass. Coolant capacity of the block and heads. Need to remove heat from a hard working truck engine and like above pulling a 14K trailer say up a mountain will put the screws to such a small cubic inch and physical size engine running boost.

Good reason a 5.9 Cummins or a Ford 7.3 diesel weighs in at around 1100lb complete an ecoboost 3.5 litre about 450 lb. Helps to have a larger oil sump as well more actual oil can carry more heat out of an engine especially with an oil cooler, Large radiator etc.

Not knocking on the 3.5 ecoboost great engine for an F 150 that tows once in a while, or as a fast comfortable sport truck.

I did see a youtube vid on boosting the Godzilla gas engine, that woke it right up.

 

[ReRide]

I have a 2012 F150 3.5 Ecoboost. I bought it 1 year old with 17,000 miles on it. I have 163,000 on it now, and so far it still runs fine. I used to change oil every 5,000 miles but the Under the Hood Podcast folks told me based on what they see coming through their shop they recommended changing every 3,500 miles, to keep the oil passage ways from sludging up. I am thinking i'd like to sell it or trade it off before I have to put in a new timing chain and cam phasers. I really need a 3/4 ton or 1 ton pickup, but I'm hoping to keep this one around 6 months to a year more, but hopefully before I have to spend a bunch of money on the engine.

 

[YLee Kioti]

I have a 2012 F150 3.5 Ecoboost. I bought it 1 year old with 17,000 miles on it. I have 163,000 on it now, and so far it still runs fine. I used to change oil every 5,000 miles but the Under the Hood Podcast folks told me based on what they see coming through their shop they recommended changing every 3,500 miles, to keep the oil passage ways from sludging up. I am thinking i'd like to sell it or trade it off before I have to put in a new timing chain and cam phasers. I really need a 3/4 ton or 1 ton pickup, but I'm hoping to keep this one around 6 months to a year more, but hopefully before I have to spend a bunch of money on the engine.

I would recommend using Valvoline Restore and Protect.
The Motor oil Geek channel does a long boring but informative interview with the engineer.
The oil actually works as advertised and even the Ford Boss Me channel tested it on his truck as well. It cleans internal slowly and seem to have positive results.
This can help with the sludging. Which is why I posted Ford Tech Makuloco channel on his video of never following OEM recommendations.
The Restore and Protect oil should help with the sludging issues.
Don't know what your 3/4-1 ton needs are but the 6.2l is a solid engine mine pulls 11k+ with ease. Gets same MPG as my old Tundra of 14mpg. On the road under 70ish or so can get 15.5 mpg. (FX4 XLT trim)
With so many chasing the 7.3l Godzilla engine the market for a current 2018-2020-ish XLT w/ a 6.2l may be doable.
Especially considering the MSRP of the 2024/25's!!!
While at the dealer picking up parts I walked the line of Super Duties.
CRAAAAAP!!!!! No way Hose' gonna trade mine!!!
A 400 dollah major maintenance do over is less than HALF the price of a monthly payment on those rigs....and it's across the board. Stellantis and Toyota are choking in inventory because of the gouging along with add-ons .....whew...oh rambling...OK,..I'll see may way out...have a good week!

 

[ReRide]

I appreciate your thoughts. I used to pull my Bobcat and attachments about 1,000 miles a year but this year I've been doing it closer to 4-5,000 miles. The trailer and the loadand is about 16,700 pounds which is way over what my half ton is rated for. It has enough power to do it and I have airbags under it to take out the squat when loaded up, and the trailer brakes make stopping very doable, but common sense would tell me to at least get a 3/4 ton pickup. The Ford 7.3 gas has 17% more torque than my Gen 1 3.5 Ecoboost, and my service folks at the Ford dealership think a gas engine would be less trouble than a diesel. I'm sure a large displacement gas engine would do better in the long run than the smaller V-6, or a diesel would be great for pulling, maybe not so great for short trips in the winter. I was thinking about another Ford but lately I'm thinking a Chevy or GMC 3/4 ton would probably be a good fit and with the independent front axle, maybe it would give a better ride when empty.

 

[YLee Kioti]

I appreciate your thoughts. I used to pull my Bobcat and attachments about 1,000 miles a year but this year I've been doing it closer to 4-5,000 miles. The trailer and the loadand is about 16,700 pounds which is way over what my half ton is rated for. It has enough power to do it and I have airbags under it to take out the squat when loaded up, and the trailer brakes make stopping very doable, but common sense would tell me to at least get a 3/4 ton pickup. The Ford 7.3 gas has 17% more torque than my Gen 1 3.5 Ecoboost, and my service folks at the Ford dealership think a gas engine would be less trouble than a diesel. I'm sure a large displacement gas engine would do better in the long run than the smaller V-6, or a diesel would be great for pulling, maybe not so great for short trips in the winter. I was thinking about another Ford but lately I'm thinking a Chevy or GMC 3/4 ton would probably be a good fit and with the independent front axle, maybe it would give a better ride when empty.

Having owned a Tundra and worked it in our pasture yeah, the IFS is sweet. If you have no need for long drives in rough terrain very often, I'd opt for the 2500 with the 6.6l gasser for sure.
I really enjoy the ride of our son's GMC 1500.
Smooth as the old Tundra.
Have a great week!
Too bad it was only rated for 9500 lbs, sure miss that comfort!

 

[deezler]

The 3.5l eco-boost is good for the F150 and that's about its limit.
the low rpm grunt of the 6.2l makes this an easy peasy task.
The 3.5l would not last in those conditions, nor pulling a 14k cattle trailer out here.
Lots of turbo load on those cute little pistons and con-rods, yeah don't think the Ford engineers designed them with low speed high torque demand on long stretches of highway in a super duty either.

Now on the other hand I've learned from a fella on a truck channel that Chevy's new 1500 has added a 2.7l turbo that is built ground up on a diesel platform, made to be solid performer.
Yet Chevy still uses a 6.6l gas and a 6.6l diesel, for the 2500.
This may still not be enough to answer your question, but it was the best I had! heh...have a good weekend y'all...

Guess which connecting rod below is from the big tough 6.2L, and which one is from the cute little 3.5L EcoBoost, haha

Every engine ever sold to the public has had to pass durability testing of a similar severity: hundreds of hours spent sustained at peak-power, full-load conditions. The 3.5L EcoBoost is designed to run at sustained full load just the exact same way the 6.2L V8 is. With that said, will it be as reliable in the field doing this for 150+k miles? Perhaps not. My only point is that from a design standpoint, it is robust and intended to work hard every day just like every other Ford engine.