2007 - 2014 Expedition & Navigator 2007, 2008, 2009, 2010, 2011, 2012, 2013 and 2014 Ford Expedition and Lincoln Navigator

3.31 rear end

Thread Tools
 
Search this Thread
 
  #1  
Old 03-07-2011, 12:17 PM
thefnswits's Avatar
thefnswits
thefnswits is offline
Senior User
Thread Starter
Join Date: May 2005
Location: NEWTOWN, ct
Posts: 128
Likes: 0
Received 0 Likes on 0 Posts
3.31 rear end

So i'm seeing here basically that the HD tow package on the expedition is a bigger radiator, a bigger tranny cooler, and a 7 pin connector, and a 3.73 rear ratio.

this limited I may get does not have that, but i can put that stuff in later and i plan on getting the intake/ MAF, tuner, exhaust, so i figure it should be good to tow my 700gvwr trailer? It would only be on short New England trips, maybe a max of 500 miles maybe once or twice a year. In a year or two I will be pulling it with a new diesel pickup.

so what's people opinions on towing? appreciate all quick advice, I may be driving this thing tomorrow!
 
  #2  
Old 03-07-2011, 04:57 PM
RI-Matt's Avatar
RI-Matt
RI-Matt is offline
Senior User
Join Date: Mar 2004
Posts: 370
Likes: 0
Received 0 Likes on 0 Posts
Just an FYI, the HD towing package doesnt include the 3.73 gears.

My 08 Limited has HD towing pkg and 3.31's. Towing rates I believe are the same though.


Matt
 
  #3  
Old 03-07-2011, 05:46 PM
thefnswits's Avatar
thefnswits
thefnswits is offline
Senior User
Thread Starter
Join Date: May 2005
Location: NEWTOWN, ct
Posts: 128
Likes: 0
Received 0 Likes on 0 Posts
Do you tow with it? If yes, what kind of performance are you seeing. My camper is 24' and is 7k gvwr so I figre with the upgrades I'm planning on, it should handle it fine.
 
  #4  
Old 03-07-2011, 05:53 PM
RI-Matt's Avatar
RI-Matt
RI-Matt is offline
Senior User
Join Date: Mar 2004
Posts: 370
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by thefnswits
Do you tow with it? If yes, what kind of performance are you seeing. My camper is 24' and is 7k gvwr so I figre with the upgrades I'm planning on, it should handle it fine.
Nope, not yet. I barely get to drive it = Wife's DD.

From what I heard/read it will downshift more often with the 3.31's. Ask around I'm sure others have towed heavy stuff with them.


Matt
 
  #5  
Old 03-10-2011, 06:39 PM
chuck s's Avatar
chuck s
chuck s is offline
Elder User
Join Date: Jan 2008
Location: Broadview Hts, Ohio
Posts: 512
Likes: 0
Received 0 Likes on 0 Posts
700gvwr trailer? 700 pound trailer? Won't need HD tow for that.

3.73 axle was not part of HD Tow on my '07 XLT but I think 3.73 was all that was offered that year. The max tow rating is now the same for both available axles but I'm happy to have 3.73 for my 5000 pound trailer.

-- Chuck
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
flavo
1999 - 2003 7.3L Power Stroke Diesel
2
10-13-2015 10:43 PM
Anthony Giovino
New Member Introductions
0
09-17-2015 08:13 PM
cstempert
Ford Truck Parts for Sale
2
05-07-2015 06:39 AM
Ken Blythen
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
37
08-07-2014 02:49 PM
79OldBone
1994.5 - 1997 7.3L Power Stroke Diesel
14
03-15-2012 04:09 PM



Quick Reply: 3.31 rear end



All times are GMT -5. The time now is 09:47 AM.