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Old 06-12-2013, 04:52 PM   #15
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Originally Posted by Jimooo View Post
My F-350 SRW was ordered with Dana 80 and 3.73 this was an option.
Then you don't have an '11-up PowerStroke. 3.73 open axle was standard in 11-up SRW 6.2L gassers, and 3.73 and 4.30 e-locker was optional. But not in SRW diesels.
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Old 06-12-2013, 06:32 PM   #16
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You are wrong.

You are correct in that the F-250, F-350 SRW and F-350 DRW all have identical diesel engines and transmissions. And you are correct when it comes to F-250 vs. F-350 SRW. They both have the same GCWR, and so they can pull the same weight.

Because the F-350 SRW can haul more pin weight without being overloaded, the actual real-world fifth-wheel weight the F-350 SRW can tow without being overloaded is a coupla thousand pounds more than than on the F-250. If they were both towing wagon-style trailers with no hitch weight, then they could both tow the same weight without being overloaded.

But powertrain includes the rear axle, not just the engine and tranny. Look at the GCWR to get the overall effect of the powertrain.

2013 F-250 and F-350 SRW with diesel engine both have Ford rear axles with 3.31 standard or 3.55 optional axle ratio, and 23,500 pounds GCWR. There are no available options that will give you more GCWR with an SRW tow vehicle.

But F-350 DRW with diesel engine has a Dana 80 rear axle with 3.73 axle ratio, and GCWR of 30,500 pounds.

That extra 7,000 pounds GCWR (and tow rating) is significant. Plus the Dooley has enough GVWR to handle the pin weight of the heavier 5er without being overloaded.
When all else fails, read the specs and that's what I should have checked. I thought for sure that all F250 and 350s had the same axle ratio options and only the 450 had the lower ratio. However what seems to be weird is there is a 250/350 4:30 option for supercab 4x2 but it has a lower tow rating than the higher ratio axles.
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Old 06-12-2013, 07:34 PM   #17
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You all got baited by a troll.... That's the biggest running joke on the boards in some form or another. "Can my Tundra pull xxx if I just add air bags?" LOL. You all got pulled in here by a one post troll...
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Old 06-12-2013, 07:46 PM   #18
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In any case it makes for some interesting reading and hopefully the newbies all learned a few things. So all is not lost.

Ken
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Old 06-12-2013, 07:58 PM   #19
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In any case it makes for some interesting reading and hopefully the newbies all learned a few things. So all is not lost.

Ken
The sad thing is there are guys out there that are towing large trailers way past the weight limits. A few years ago I was past by a Ford Ranger towing a 5th wheel. I was in total shock to see that Ranger pulling it and how fast the guy was driving. The ranger had to be screaming for dear life. I still don't know what he did to get the 5th wheel in the bed and make it work.

So far I have learned a lot about towing since I joined this group.
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Old 06-12-2013, 08:39 PM   #20
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However what seems to be weird is there is a 250/350 4:30 option for supercab 4x2 but it has a lower tow rating than the higher ratio axles.
Only if the 4.30 ratio is behind a gas engine and the higher (numerically lower) ratio is behind a diesel engine.

I suspect you're reading some bad info from somewhere. 4.30 axle ratio is available in a SuperDuty SRW only with 6.2L gas engine, either 4x4 or 4x2, and any cab or wheelbase.

4.30 ratio is also available in an F-350 DRW with 6.2L engine either 4x4 or 4x2, and any cab.

And it's available in the F-450 diesel.

SuperCab 4x2 SRW with 4.30 ratio has 6.2L engine and GCWR of 22,000 pounds.

SuperCab 4x2 SRW with with 3.31 or 3.55 ratio has diesel engine and GCWR of 23,500 pounds.

So yeah, that scrawny 6.2 gas engine with 4.30 ratio has a lower tow rating than the diesel engine with a 3.31 ratio. That shouldn't surprise anyone. But that's not comparing apples to apples.
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Old 06-12-2013, 08:42 PM   #21
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Only if the 4.30 ratio is behind a gas engine and the higher (numerically lower) ratio is behind a diesel engine.

I suspect you're reading some bad info from somewhere. 4.30 axle ratio is available in a SuperDuty SRW only with 6.2L gas engine, either 4x4 or 4x2, and any cab or wheelbase.

4.30 ratio is also available in an F-350 DRW with 6.2L engine either 4x4 or 4x2, and any cab.

And it's available in the F-450 diesel.

SuperCab 4x2 SRW with 4.30 ratio has 6.2L engine and GCWR of 22,000 pounds.

SuperCab 4x2 SRW with with 3.31 or 3.55 ratio has diesel engine and GCWR of 23,500 pounds.

So yeah, that scrawny 6.2 gas engine with 4.30 ratio has a lower tow rating than the diesel engine with a 3.31 ratio. That shouldn't surprise anyone. But that's not comparing apples to apples.

http://www.ford.com/trucks/superduty...ations/towing/
im thinking may it is a misprint.
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Old 06-12-2013, 08:47 PM   #22
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[QUOTE by jamesrxx951
So far I have learned a lot about towing since I joined this group.[/QUOTE]

Better to learn it that way than from personal experience.
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Old 06-12-2013, 08:59 PM   #23
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If you mean that line in the conventional towing section that includes:
4.3 22000 - - 12500

That's obviously a misprint. It's in the diesel section, but it has the GCWR of the 6.2L gasser. A 4.3 axle ratio is not available with a diesel engine in anything less than an F-450. So chalk that one up to inadequate editing by the Ford web maintainer crew.
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Old 06-12-2013, 09:02 PM   #24
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If you mean that line in the conventional towing section that includes:
4.3 22000 - - 12500

That's obviously a misprint. It's in the diesel section, but it has the GCWR of the 6.2L gasser. A 4.3 axle ratio is not available with a diesel engine in anything less than an F-450. So chalk that one up to inadequate editing by the Ford web maintainer crew.

Fleet.ford does not show that. someone missed something in editing.
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Old 06-12-2013, 09:29 PM   #25
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I am driving a new F450 Bucket truck @ work with a V-10 and the new Fiberglass light weight bed on it. That thing will hardly get out of it's own way when traveling from job to job across town, and it cries so bad on hills that it makes you want to get out and push it, so that it can keep up with the trucks on the Interstate highway. I am soooo glad that we decided to stay with the Diesel Ram trucks instead of the new Ford Gasser that was offered for our personal tow vehicle!
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Old 06-13-2013, 07:43 AM   #26
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I want to thank everyone for their input. I decided not to go for a 4x4 unless I buy another truck down the line for just 4 wheeling. I've learned a lot from all the responses. I use to pull a 40' 5er with a GMC gas duly. It was truly a joke going up hills. I think I am going to go with the Cummings engine. But thank you all again for your input.
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Old 06-13-2013, 07:46 PM   #27
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I have a 08 ram 2500 HD with the Cummings 6.7l turbo engine, says I can tow 16,000. But I am only currently towing a 2011 keystone outback, 38' in length with two slide outs and weighs loaded a little over 8000.
Defiantly recommend the Cummings engine as towing capacity is good, I have talked to people that have the ford and Chevy diesels and they wished they went with the Cummings.
I would have to see this on a scale.
I have a 27' Sierra with one slide, and it is almost 9000# dry 12,000 max
I can't see 11 more feet weighing less.
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Old 06-18-2013, 12:13 PM   #28
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I saw the Tundra towing the space shuttle. 1 Million pounds. Just sayin!
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