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Old 06-12-2011, 08:41 AM   #1
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New guy with 09 Ford Expedition Eddie Bauer

Hi folks,
I just picked up my Grey Wolf 21RR. I did a ton of research prior to buying our TV, a 2009 Ford Expedition. The tow rating for the specific model I purchased is said to be 9000 lbs, (Although, the salesman of course tried to convince me it was more like 11k) The data only supports the 9k number.
It has the complete tow package on it, but I don’t know for sure what that means about the final drive ratio? It appears the choices are 3.31, or 3.73. Will this make a huge difference?

My big question is, I am preparing to tow the loaded trailer (best generous guess would be about 6000 to 6500 lbs) down to South Carolina. My wife and I top out at 300lbs total (I’m fat, she’s real small ). I will have to cross the Smokey’s at some point, (mapped route is via I-40) Should I be real concerned about grades on this route? Is there any tips you would give to someone who would be new to towing a TT on grades?

I should also mention that I have a Reese Pro Series WD with sway control.
Thanks for any help.
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Old 06-12-2011, 09:23 AM   #2
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Welcome !! Call a Ford dealer service dept. Tell them your VIN # for your Expedition they should be able to tell you which rear gear you have . And check online for a Ford towing guide. Good luck !!
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Old 06-12-2011, 09:38 AM   #3
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Quote:
Originally Posted by dretired View Post
Welcome !! Call a Ford dealer service dept. Tell them your VIN # for your Expedition they should be able to tell you which rear gear you have . And check online for a Ford towing guide. Good luck !!
My neighbor just showed me how to get that I have the 3.31 axel.
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Old 06-12-2011, 10:26 AM   #4
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If the Expy has the optional heavy duty tow package, it is rated to tow between 8700 and 9200 lbs., depending on whether it is the standard model, the EL, and whether it is 2 or 4 wheel drive.

https://www.fleet.ford.com/showroom/...rtTracEs09.pdf

Without the optional heavy duty tow package, it is rated to tow 6000 lbs.

Regardless of the final drive ratios, looks like Ford rates them both the same.... weird.
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Old 06-12-2011, 10:54 AM   #5
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Thanks for the info Mtnguy! It seems everytime I turn around there is some data out there that is contrary to the data I previously had This link says I'm at 9000 lbs rather than 9200. Oh well, I'm still 2500 to 3k short of the max.

Thanks again,
Scot
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Old 06-12-2011, 11:01 AM   #6
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I have an 07 Expedition but I have the 3.73 gears. You should pull it fine. You will probably need to lock out the overdrive on anything other than interstates.
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Old 06-12-2011, 07:32 PM   #7
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Seems like if you really have the 'optional heavy duty tow package' that you would also have 3.73 gears. You should do more research on exactly what tow package is on your truck. Salesman will say ANYTHING to make a buck.
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Old 06-12-2011, 08:22 PM   #8
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Seems like if you really have the 'optional heavy duty tow package' that you would also have 3.73 gears. You should do more research on exactly what tow package is on your truck. Salesman will say ANYTHING to make a buck.
The link I have in my #4 post shows that the "optional heavy duty tow package" is available for the 3.31 or 3.73 final drive ratio.
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Old 06-12-2011, 08:27 PM   #9
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To the OP, do you have both the 4 pin and round 7pin factory connectors?
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Old 06-12-2011, 09:05 PM   #10
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I've got an 01 expy with the 3.55 rear gearing, HD tow package (which is included with the eddie bauer option at least in 01).

My setup is similar to yours and my trailer is about the same weight and a bit longer. Horsepower drops with mileage as things wear so at 231k I'm sure I'm down 30% from new in the power dept.

My trailer tows beautifully - no sway, no bucking, no issues. Powerwise, since that is your question, is adequate. Now we had the trailer (5465 factory weight on the door sticker) with mebbe 800 lbs of cargo, if that - I kept things light on purpose (and I'm sure it won't stay that way ) and in the truck we had 600lbs of people/pets and 100 or so in cargo. The hitch isn't light. I'm guessing we're right at the 12,500 GCWR the book says I'm allowed (for a 4x4, 3.55 and 17" rims).

We towed it ~80 miles from near the ohio line on the PA turnpike into the allegheny mountains and while i'd love to say we had plenty of power, based on towing smaller loads in the past, I'd say we had adequate power. I'm used to barely knowing there is a trailer back there and with our Grey Wolf you know you're not alone.

What that means is there were a couple of hills where I had the pedal to the floor and the truck was shifting into 2nd. Now I never fell below 50 mph and when held to the floor we'd always accelerate back up to 60-65, and I did pass a couple of cars on one up hill grade.

How 3.31 gears would affect this situation I'm not sure, but if you've got a lot fewer miles you'll have more power so it may balance out.

As long as you're not trying to beat the clock I'd say you'll do fine - there really is no sure way to know until you do it, and you're threshold for speed/power may be higher or lower than mine or any other posters here.
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