New Ford Engine

[jharrell]

Originally Posted by jackreno

Wrong the super duty Truck will have that higher HP/Torque rating but the V-8 in the F-53 will be rated at 350 HP and 468 lbs of torque at 3900 rpm's, lower HP than my 08 F-53 at the same torque..

Nothing really changes from the V-10 to the V-8 in the F-53s as I see it..

https://www.ford.com/commercial-truc...f53-motorhome/

Wrong!

Chassis rated V10 - 362hp @ 4,750 - 457 lb-ft @ 3,250
Chassis rated 7.3 V8 - 430hp @ 5500 - 475 lb-ft @ 4000

Dyno Rated V10 - 320hp @ 4000 - 460 lb-ft @ 3000
Dyno Rated 7.3 V8 - 350hp @ 3900 - 468 lb-ft @ 3900

The new V8 puts out 30 more HP than the V10 in the F53 in dyno cert and 68 more HP under chassis cert!

Ford downrated / rpm limited the V10 in 2016 due to the new EPA certification process (which I have in my MH a fine engine), the new 7.3L V8 falls under that same certification, if the certification worked like it did prior to 2016 the F53 would have a 430hp rated engine, just like the V10 was 362hp.

https://media-cf.assets-cdk.com/team...tification.pdf

[inlineskater]

The V10 was not that bullet proof. A friend of mine in his 2015 Sunova had two of them replaced under the warranty.

[jackreno]

Originally Posted by jharrell

Wrong!

Chassis rated V10 - 362hp @ 4,750 - 457 lb-ft @ 3,250
Chassis rated 7.3 V8 - 430hp @ 5500 - 475 lb-ft @ 4000

Dyno Rated V10 - 320hp @ 4000 - 460 lb-ft @ 3000
Dyno Rated 7.3 V8 - 350hp @ 3900 - 468 lb-ft @ 3900

The new V8 puts out 30 more HP than the V10 in the F53 in dyno cert and 68 more HP under chassis cert!

Ford downrated / rpm limited the V10 in 2016 due to the new EPA certification process (which I have in my MH a fine engine), the new 7.3L V8 falls under that same certification, if the certification worked like it did prior to 2016 the F53 would have a 430hp rated engine, just like the V10 was 362hp.



https://media-cf.assets-cdk.com/team...tification.pdf

So seems like the V-8 has to spin at higher RPM's vs the pre 2016 V-10 to get better numbers, that is what many V-10 owners complain about was the high RPM's.

Chassis rated V10 - 362hp @ 4,750 - 457 lb-ft @ 3,250
Chassis rated 7.3 V8 - 430hp @ 5500 - 475 lb-ft @ 4000

And on the Dyno test it has to be even high RPM's to get about the same torque and that is what motorhomes need is torque but at lower RPM's is better..

Dyno Rated V10 - 320hp @ 4000 - 460 lb-ft @ 3000
Dyno Rated 7.3 V8 - 350hp @ 3900 - 468 lb-ft @ 3900

I am not knocking the V-8, who knows I might own one some day but for a year before its release every one was hoping it would be a beast of HP/Torque to put the V-10 to shame and how many gave it the name Godzilla but it did not pan out as was expected.

Just slightly more power is high RPM levels and less in other RPM levels..

Thought Ford could have done better..

The new V-8 motorhome owners are going to have to spend $$ to beat my 08 V-10 up a large hill, I got the Banks ram cold air intake, Banks long tube headers, 5 Star tuning and 4 inch monster tube exhaust..

Anyone up for a race.

[jharrell]

Originally Posted by jackreno

So seems like the V-8 has to spin at higher RPM's vs the pre 2016 V-10 to get better numbers, that is what many V-10 owners complain about was the high RPM's.

And on the Dyno test it has to be even high RPM's to get about the same torque and that is what motorhomes need is torque but at lower RPM's is better..

Just slightly more power is high RPM levels and less in other RPM levels..

Right here is the classic example of why you should look at dyno plots and not peak numbers.



The 7.3L V8 has a very flat torque curve. It makes more than 350 lb-ft from around 3000 to 4750 rpm. At 3250 rpm it makes right around 460 lb-ft.

At 4750 rpm its makes about 420 hp, 58 more than the V10 at the same rpm!

The new gas 7.3L is a significant improvement in power over the V10, its too bad EPA regs changed for both the V10 and the new 7.3L it has held both of them back in the MH Chassis although its looks like tuners from 5-star and others easily unlock the 7.3L back to at least chassis cert tune if not beyond.

Remember these are first year numbers the V10 put out what 275hp first year? The 7.3L seems to have a lot of head room with little modification based on early reports from tuners

https://www.roadandtrack.com/new-car...th-basic-mods/

[jomo]

Originally Posted by inlineskater

The V10 was not that bullet proof. A friend of mine in his 2015 Sunova had two of them replaced under the warranty.

I highly doubt that 2 new engines went bad. They probably replaced parts on the original and the parts failed again.

[jackreno]

Originally Posted by jharrell

Remember these are first year numbers the V10 put out what 275hp first year? The 7.3L seems to have a lot of head room with little modification based on early reports from tuners

https://www.roadandtrack.com/new-car...th-basic-mods/

Those same mods on a V-10 could do the same.

And yes I do think Ford will increase the HP/Torque in the V-8 in a few years, they always do this slow increase to keep the sales going..

[jharrell]

Originally Posted by jackreno

Those same mods on a V-10 could do the same.

Link please, thats easy to say, nothing I can find says a naturally aspirated V10 can be modded lightly with just a new cam and some porting and make 600 HP like that 7.3.

Super / Turbo sure and boring and changing out the bottom end, but the 7.3 is making 789hp with more extensive changes and still no boost and no boring!

Seems like you just don't want to admit the 7.3L is a better performing engine than the V10 right now with much more untapped potential going forward. Its not like that should be a surprise, its a new ground up design using modern tech and all the experience Ford has from the V10 and all the other engines.

[jackreno]

Originally Posted by jharrell

Link please, thats easy to say, nothing I can find says a naturally aspirated V10 can be modded lightly with just a new cam and some porting and make 600 HP like that 7.3.

If certain mods were available the V-10 could be a power house but very few performance companies stepped up and made performance products for the V-10 so that's why you cant find much on the V-10 but if there were available I am sure it could get 600 plus HP easy.

I never said the V-8 was a bad motor or worse than the V-10 just all the hype before it came out and it sort of felled flat on performance and those same high RPM's never went away..

Maybe GM needs to bring back the 8.1L [500 cubic inch] with 500 hp and 575 lbs of torque [stock] and put this all to shame..

[jharrell]

Originally Posted by jackreno

If certain mods were available the V-10 could be a power house but very few performance companies stepped up and made performance products for the V-10 so that's why you cant find much on the V-10 but if there were available I am sure it could get 600 plus HP easy.

Again easy to say with nothing to back it up, Ford made a 427 concept supercar car with the V10 bored out and forged pistons and all that, 590hp. Not like it hasn't been tried.

The new 7.3 is obviously ahead and makes more power at the same RPM as the V10 meaning its does not need to rev as high to get the same performance and if it does rev up to 5500 its significantly out performing the V10.

Originally Posted by jackreno

I never said the V-8 was a bad motor or worse than the V-10 just all the hype before it came out and it sort of felled flat on performance and those same high RPM's never went away..

You never said it was better either, which it obviously is. Almost 70 more hp in stock form is flat, well that's just like your opinion man.

Originally Posted by jackreno

Maybe GM needs to bring back the 8.1L [500 cubic inch] with 500 hp and 575 lbs of torque and put this all to shame..

In a motorhome, when did it ever do that in stock form?

GM 8.1L Vortec L18 V-8 Specs and Information

"The engine peaked at 340 horsepower and 455 lb-ft during its 6 year stint as the biggest engine option for 2500HD and 3500HD models from Chevrolet and GMC."

[CLIFFTALL]

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Thanks

[vito.a]

We just drove a 2021 Ford E450 with the new 7.3 gas V8 and six speed trans from NY to AZ. We were loaded to about 13,000#.

I was impressed. It maintained 68mph in 6th gear on most hills. On mountain climbs it would shift down to 5th and maintain. A couple of times on very steep mountains it downshifted to 4th and would actually accelerate.

Our previous trips with a Triton V10 we averaged 7-8 mpg and the new 7.3 averaged 10.4. At first I drove 68mph but then gradually increased to 75. RPM was 2200 at 68 and just under 2500 at 75.

If I was in the market for a gas engine RV/truck, I would opt for the new 7.3.

[77Travco]

Originally Posted by jackreno

Anyone up for a race?

My hot rod 440 powered M500 chassis Travco will smoke any school bus, UPS or FedEx truck in town! ...

Originally Posted by vito.a

We just drove a 2021 Ford E450 with the new 7.3 gas V8 and six speed trans from NY to AZ. We were loaded to about 13,000#.

I was impressed. It maintained 68mph in 6th gear on most hills. On mountain climbs it would shift down to 5th and maintain. A couple of times on very steep mountains it downshifted to 4th and would actually accelerate.

Our previous trips with a Triton V10 we averaged 7-8 mpg and the new 7.3 averaged 10.4. At first I drove 68mph but then gradually increased to 75. RPM was 2200 at 68 and just under 2500 at 75.

If I was in the market for a gas engine RV/truck, I would opt for the new 7.3.

Good info... Thanks for your input.

[DavidEM]

Originally Posted by vito.a

We just drove a 2021 Ford E450 with the new 7.3 gas V8 and six speed trans from NY to AZ. We were loaded to about 13,000#.

I was impressed. It maintained 68mph in 6th gear on most hills. On mountain climbs it would shift down to 5th and maintain. A couple of times on very steep mountains it downshifted to 4th and would actually accelerate.

Our previous trips with a Triton V10 we averaged 7-8 mpg and the new 7.3 averaged 10.4. At first I drove 68mph but then gradually increased to 75. RPM was 2200 at 68 and just under 2500 at 75.

If I was in the market for a gas engine RV/truck, I would opt for the new 7.3.

What were you driving with the new V8, a truck, a motorhome, or ?

David

[nbluesky]

I know none of you are talking about the Ford 6.2 gasser but I own that in my 2011 F350 and I am blown away with how smooth and reliable it has been. Bought at 50k and now have 125k on it.

385 horsepower (at 5,500 rpm)
405 pounds-feet of torque (at 4,500 rpm)

6 Speed Auto behind it.

Does this motor ever get used in RV's?