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Old 02-20-2013, 07:47 AM   #31
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I have the 3.73 with max tow and payload package. No problems.

Later,
John
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Old 02-20-2013, 09:34 AM   #32
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In my experience, gear ratio has a few effects when towing. First concerns take-off ability with a load. The lower you overall drive ratio is in first the easier it is pull a load from a stand still. Second is RPM variation from one gear to the next. A lower rear axle ratio will effectively lessen the "distance" between gears resulting in the vehicle staying in a smaller RPM window while towing. And third, you run higher RPMs when in your highest gear. With that being said, in my experience the lower gear ratio has a much greater effect on older NA engines with fewer tranny gears. My parents own a 4x4 CC EB with the 3.31 gears and have pulled fully loaded gooseneck stock trailers with no problem(Weren't weighed, but I'd guess them in the 10-12K range). It has a tranny cooler and a tow/haul mode, so these are NOT options included only with the MaxTow package. They weren't add-ons, either- I did the deal for them and know what options were included. I believe these are standard options for any EB equipped truck. This truck will get 30 miles per gallon on gentle rolling terrain at 55 mph and has a lifetime average of 16.9mpg which includes some towing and lots of short trips and town driving. It seems as though most of the new diesels have a much higher gear ratio than the older ones as well. I assume this is because newer trannys are typically 6 speed instead of 4. As a matter of fact, I just looked at the Ford website, and on an F250 with the 6.7 Powerstroke, you can only get 3.31 gears in the 2 wheel drive and with 4x4 the lowest gear ratio is 3.55. 15 years ago with the 7.3, if you were gonna tow you got the 4.10 gears and the 3.55 were considered hiway gears; nothing higher was even offered. So, simply saying "lower is better" is taking a very elementary view. With that being said, I don't think I'd ever opt for the 4.10's in an EB- I think this will kill mileage and offer very few benefits. If I were going to tow heavy loads regularly through mountainous areas, I think I'd go with the MaxTow with 3.73's. For occasional reasonably heavy towing, even in mountains, or any towing in flat or hilly areas, or anything less, I wouldn't have a problem with the 3.31 or 3.55 gears. Just my .02.
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Old 02-20-2013, 09:51 AM   #33
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Originally Posted by dustman_stx View Post
So, simply saying "lower is better" is taking a very elementary view. With that being said, I don't think I'd ever opt for the 4.10's in an EB- I think this will kill mileage and offer very few benefits.
I agree with this statement. Most of your time you will NOT be towing. 3.73s are sufficient for heavy towing with killing fuel mileage. 3.55s will be OK if you are willing to tow in 5th (no big deal really). But I don't think you would be able to detect much of a mileage difference between 3.55s and 3.73s. So, I'd go with the 3.73s. 3.15s or 3.31s might be OK for the occasional towing of a fishing boat or tent trailer. Like so many things, it all depends . . . .
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Old 02-20-2013, 01:44 PM   #34
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Not a thread stealer.....just FYI:

My truck came std w 3.55 & 32.1" tires. Replaced tires w 35.4" effectively making my ratio 3.21ish. I tow a 30' 27HFS (6,758# dry + 1,000# atv's + stuff) Eco will handle it nicely, but it's not optimum.

By adding 4.10, I will bring ratio equal to or just under 3.73 w 35.4" tires. However, if the next owner goes back to stock tires, he's hosed on fuel economy.

For the original thread starter, my problem is I am right at the 7,200 payload limit because of my tongue weight. The max tow would have solved this and will for you should you upgrade down the road.

You really asked 2 questions & it appears most answers lean towards 3.73 as best overall. Max tow is your best friend if you will be near your payload limit.
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Old 02-20-2013, 02:07 PM   #35
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Not a thread stealer.....just FYI:

My truck came std w 3.55 & 32.1" tires. Replaced tires w 35.4" effectively making my ratio 3.21ish. I tow a 30' 27HFS (6,758# dry + 1,000# atv's + stuff) Eco will handle it nicely, but it's not optimum.

By adding 4.10, I will bring ratio equal to or just under 3.73 w 35.4" tires. However, if the next owner goes back to stock tires, he's hosed on fuel economy.

For the original thread starter, my problem is I am right at the 7,200 payload limit because of my tongue weight. The max tow would have solved this and will for you should you upgrade down the road.

You really asked 2 questions & it appears most answers lean towards 3.73 as best overall. Max tow is your best friend if you will be near your payload limit.
Yet another thing most people don't think about- tires. I am curious as to exactly what is done to increase payload on the MaxTow package. Is it actually a different axle being used, or just heavier springs?
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Old 02-20-2013, 03:09 PM   #36
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Yet another thing most people don't think about- tires. I am curious as to exactly what is done to increase payload on the MaxTow package. Is it actually a different axle being used, or just heavier springs?
Both. I called Ford directly before I ordered my Max Tow to find out what exactly enabled them to increase the payload and GVW. It also includes heavier duty suspension bushings; including the front end.

I would recommend the LT LR C tire option at the same time. My "tow ride" has improved a LOT with these tires. Less bounce and sway.
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Old 02-20-2013, 04:02 PM   #37
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Three weeks ago, we traded our '11 Ecoboost with 3.15 gears for a 2012 F250 max tow with 3.55 gears. The F250's standard tire/wheel/rim size was 18"; however, the dealer upgraded them to 20". This effectively reduced our rear ratio to 3.31.

Took the 5400 lbs camper (empty) out of storage last week and brought it home to dewinterize. Steep hills where I live and the F250 pulled in 6th nearly all the way home (10 miles). Ford's engineering teams deserve lots of kudos for their efforts in designing the Ecoboost and 6.7L engines. They're far beyond what anyone else is currently offering (ex-chevy guy here).

Gotta say I nearly cried when we traded the EB. Appreciated that F-150 more than any truck I've owned. 23 & 24 MPG combined city/highway was not uncommon and it was one great riding truck. Feel most every bump in the road now with the bigger hoss, but we're getting used to the rougher ride and the 6.7 is getting 18.1 combined (not towing) and 12/13 towing at this point. Considering that is coming from a 400hp/800 FP torque rig, I think we're off to a good start...

In summary, the 3.15 gears in the '11 EB were not conducive to towing our TT up steep grades, nor was it suited to our plan to soon purchase a 5th wheel, thus our decision to trade up to a 3/4 ton truck. IMO though, an EB F-150 running 3.55s, should not experience significant difficulty pulling loads of 9K or less... If I were planning to spend lots of time with the EB in the Rockies, I'd probably go with the 3.73 setup.
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Old 02-25-2013, 04:32 PM   #38
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Do not listen to the salesman. Go with the 3:73 with max tow package.... and the 6.5 ft bed if you ask me. You get better shocks, brakes, tranny cooler. Your payload is much better and you can tow over 11000 pounds. This will give you room to trade campers if you one day get the itch. In addition, the larger mirrors make towing much easier with increased visability. I have a 2012 F150 Screw ECO 4x4 with a GVWR of 7700 pounds. gets 16 stop and go and 21-22 highway. It tows like a beast. It tows my 35ft 8500 pound Lacrosse quite nicely. These units are harder to find but well worth the extra work searching for them....Sounds like a salesman is just trying to make a quick sale. Do not fall for it.
Good Luck.
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Old 02-25-2013, 04:41 PM   #39
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Those of you that tow with F-150 Eco-boost, which rear end gears are you using? Seems to me that 3:31s are alittle small and the dealer wants to sell them to me. I researched it on the Ford website but still am sceptical of the #s. I use a Tundra 5.7l/4:30 gears now and if you ever towed with one you would see why I'm not sure so Looking for input from you experienced F 150 users. ( towing 5000lb unit)

Tx in advance.
Steve, Here is the link to Ford and towing capacities, plus other specs. Always think toward the next TT. Hope this helps..

2013 Ford F-150 | View Towing Specifications | Ford.com
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Old 02-25-2013, 06:13 PM   #40
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Do not listen to the salesman. Go with the 3:73 with max tow package.... and the 6.5 ft bed if you ask me. You get better shocks, brakes, tranny cooler. Your payload is much better and you can tow over 11000 pounds. This will give you room to trade campers if you one day get the itch. In addition, the larger mirrors make towing much easier with increased visability. I have a 2012 F150 Screw ECO 4x4 with a GVWR of 7700 pounds. gets 16 stop and go and 21-22 highway. It tows like a beast. It tows my 35ft 8500 pound Lacrosse quite nicely. These units are harder to find but well worth the extra work searching for them....Sounds like a salesman is just trying to make a quick sale. Do not fall for it.
Good Luck.
Yes, you often have to order to get Max Tow the way you want it.
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