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Old 10-21-2012, 01:42 PM   #41
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Originally Posted by Greg_8507 View Post
When Ford released the 6.0 back in 03 to replace the 7.3, the 6.0 was rated for more HP and torque, however, when pulling a heavy load (especially up hill) the 7.3 will out perform the 6.0 any day. On flat ground with no load the 6.0 will out run the 7.3 easy, but once you put a load behind it, there's no replacement for displacement.
No, it's not necessarily displacement. For towing and loads, it's all about low rpm torque. The 7.3 Power Stroke diesel was gradually upgraded to 505-525 lb-ft of torque at 1600 rpm, more than Ford's 6.2 L and Ecoboost gassers at those low rpms. Ford's current 6.7L V8 diesel is the real monster as it gets 800 lb-ft at 1600 rpm.

Diesels are famous for their low-end torque and that (plus fuel economy) is what makes them great tow/haul engines. Most gassers simply can't compete with diesels in low-end torque, including the 6.2L, but Ford has demonstrated with the 3.5L V6 Ecoboost that if you add bi-turbos, direct injection and tweak it just right, you can come close. It competes in torque well with the 3L V6 Euro-diesels (but not that well in fuel economy).

Bottom line, sure displacement helps, but there's other ways of getting low end torque. And that's what you want when towing or hauling.

EDIT: Can't really comment on your comparison of the 6.0 versus 7.3 Powerstroke. They seem to have similar low end torque numbers. But the early 6.0 had problems. 6.0L and other Powerstrokes
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Last edited by brulaz; 10-21-2012 at 01:53 PM.
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Old 10-22-2012, 12:37 AM   #42
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The generators I work on had an inline 6, which was later replaced with a turbo charged inline 4. Both engines are rated as the same HP and torque at 1700 rpms, which is the operating speed at which you get out put from the generator. After repair, we connect then to a dummy load to put it through its paces and make sure it works. The old inline 6 bogs down but holds strong at 150% load. The newer turbo charged inline 4 bogs down so far at 95-100% load, it faults out. Both engines are made by Detroit Deisel. Just a tend I see.
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Old 10-22-2012, 10:26 AM   #43
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The generators I work on had an inline 6, which was later replaced with a turbo charged inline 4. Both engines are rated as the same HP and torque at 1700 rpms, which is the operating speed at which you get out put from the generator. After repair, we connect then to a dummy load to put it through its paces and make sure it works. The old inline 6 bogs down but holds strong at 150% load. The newer turbo charged inline 4 bogs down so far at 95-100% load, it faults out. Both engines are made by Detroit Deisel. Just a tend I see.
Well that's a good comparison. Side by side at the same rpm.

But what it tells me is that the turbo 4 really doesn't really have the same torque and hp as the 6 at 1700 rpm, despite what Detroit Diesel says. Maybe DD fudged the numbers or honestly made a mistake when testing it. Dunno, but it sure sounds like they're off.

It takes some serious voodoo to extract more ooomph out of a small engine. But over the years manufacturer's are doing it. In general, modern engines are smaller but more powerful than older models. Like the old 7.3 Power Stroke diesel at 505-525 lb-ft of torque at 1600 rpm, compared to the current 6.7L diesel that gets 800 lb-ft at 1600 rpm. It's incredible, really.

With Ford's Ecoboost V6, we now have a couple of years of towing experience by thousands of owners. And there's no doubt that it generally lives up to Ford's specs. And Ford's own graphs show the Ecoboost has more low-end torque than its 6.2L V8.

But who knows. I would love to see a real world, side-by-side tow/haul comparison: Ecoboost versus the 6.2L V8. We'd just have to make sure the 6.2L was kept under 3000rpm or so , 'cause it definitely blows away the Ecoboost at higher rpms.
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Old 10-23-2012, 11:45 AM   #44
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the tow mirrors are not aways added!
+1

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Old 10-23-2012, 12:43 PM   #45
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well there you go. is that a ordered or off the lot truck? i just got done checking with 3 different dealers and all of them told me if you order it they say it will have tow mirrors and if its just a lot truck it wont?
i knew i was right but didn't find the proof my self!
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Old 10-23-2012, 01:52 PM   #46
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His is a Canadian truck. They do not come with the big mirrors when ordering the MaxTow option. Seperate option.
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Old 10-23-2012, 02:21 PM   #47
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His is a Canadian truck. They do not come with the big mirrors when ordering the MaxTow option. Seperate option.
Exactly. Makes cruising the car lots pretty easy in the States. All the Maxtows have elephant ears, all the HD Payloads have the 7 lug wheels. And they're both pretty rare unless you order them in yourself.

Up here it's more confusing.
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Old 10-24-2012, 11:06 AM   #48
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It has the elephant ears now though....
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Old 10-24-2012, 12:31 PM   #49
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It has the elephant ears now though....
Hmmm, sure? Just tried to build one at the ford Canada site, and the trailer mirrors were still a separate option with MaxTow for the 2013's.
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Old 10-24-2012, 02:14 PM   #50
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here you go a truck on the lot with out big ears and max tow.
crap cant get it to down load the pdf file of the window sticker
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Last edited by blueovelboy; 10-24-2012 at 02:20 PM. Reason: pdf file is bad
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