410 rear end need to change to 373... Opinions - Ford Powerstroke Diesel Forum
Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 02-05-2014, 01:03 AM
Powerstroke.org Rookie
 

Join Date: Oct 2010
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
410 rear end need to change to 373... Opinions

Hello, I am fairly new to the forum, I just bought a 2003 7.3 L crew cab duly F350. I have 410 gear ratio in the backend, and I am assuming it is the same for the front? Drove it home and 65 mph at 2600 rpm was horrible. I need to get better gears in the back end for highway speeds. Does anybody have any opinion where I should start with this? Should I go buy new ring and pinion gears and do it myself? Would it be easier to just find someone to trade axles with? Or would it be easier to take it to a diesel shop and have them do it? Thanks in advance for any help!!!!!
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 02-05-2014, 01:33 AM
Compression Ignition Addict
 

Join Date: Oct 2011
Location: Chico, California
Posts: 3,493
Thanks: 17
Thanked 100 Times in 95 Posts
Feedback Score: 0 reviews
2600 rpm at 65 seems high for 4.10's.
im not 100% sure though.

at 70 mph with 3.73's im at 2000 rpm
Reply With Quote Quick reply to this message
  #3  
Old 02-05-2014, 01:37 AM
Premium Member
 

Join Date: Oct 2007
Location: Salinas CA.
Posts: 404
Thanks: 3
Thanked 6 Times in 6 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by bburt85 View Post
Hello, I am fairly new to the forum, I just bought a 2003 7.3 L crew cab duly F350. I have 410 gear ratio in the backend, and I am assuming it is the same for the front? Drove it home and 65 mph at 2600 rpm was horrible. I need to get better gears in the back end for highway speeds. Does anybody have any opinion where I should start with this? Should I go buy new ring and pinion gears and do it myself? Would it be easier to just find someone to trade axles with? Or would it be easier to take it to a diesel shop and have them do it? Thanks in advance for any help!!!!!
Take it to a shop and have new gears installed. Unless you have the right torque wrench and know how to set the lash on the pinion.


Sent from AutoGuide.com Free App
Reply With Quote Quick reply to this message
  #4  
Old 02-05-2014, 03:57 AM
Premium Member
 

Join Date: Apr 2012
Location: Stratford, Ontario
Posts: 2,257
Thanks: 33
Thanked 125 Times in 111 Posts
Feedback Score: 0 reviews
Best bet is to find somebody who wants the opposite, and trade them.

I bet youll be 2000$ to have to gears swapped for 3.73's.. but you can swap axles easy
Reply With Quote Quick reply to this message
  #5  
Old 02-05-2014, 04:17 AM
Compression Ignition Addict
 

Join Date: Apr 2007
Location: Wright City, MO
Posts: 2,763
Thanks: 3
Thanked 6 Times in 6 Posts
Feedback Score: 1 reviews
Changing your gears isn't something I would recommend DIY-ing, unless you have a hell of a shop. This will also cost you $1500-2000.
Reply With Quote Quick reply to this message
  #6  
Old 02-05-2014, 04:24 AM
Powerstroke.org Rookie
 

Join Date: Oct 2010
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
So does anyone know a good diesel shop in the Twin Cities Minnesota area preferably on the Eastside? How much do you think this will cost?
Reply With Quote Quick reply to this message
  #7  
Old 02-05-2014, 04:26 AM
Powerstroke.org Rookie
 

Join Date: Oct 2010
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Just saw the cost in Zaairmans post. Thank you!!!
Reply With Quote Quick reply to this message
  #8  
Old 02-05-2014, 04:45 AM
Compression Ignition Addict
 

Join Date: Oct 2011
Posts: 376
Thanks: 2
Thanked 16 Times in 16 Posts
Feedback Score: 0 reviews
Like others are saying, I'd find someone with bigger tires that would want to swap. I can almost guarantee you could find someone that would jump at the chance!

Brett
Reply With Quote Quick reply to this message
  #9  
Old 02-05-2014, 06:03 AM
Powerstroke.org Fanatic
 

Join Date: Nov 2013
Location: WV
Posts: 97
Thanks: 0
Thanked 4 Times in 4 Posts
Feedback Score: 0 reviews
I'm running the same gears with 245s on my dually and only turning 2300 at 70 mph. I reckon it could be the few mods I have to the engine making power at a lower RPM, not sure. I'd sure like to get mine to drop below 2k rpm, it'd make a lot better highway ride. Ring and pinion isn't that hard to change, but it MUST be set up right. Too loose, you break something; too tight, rear end will get hot and lock up which can be rough or deadly at interstate speeds. You have to have a good torque wrench, marking paint, a press, some type of puller, and a dial indicator in addition to normal stuff. Swapping axle assemblies is much simpler, I'm just not sure how easy it'd be to find dually axles with higher gears installed.
Reply With Quote Quick reply to this message
  #10  
Old 02-05-2014, 08:40 AM
Compression Ignition Addict
 

Join Date: Oct 2013
Posts: 238
Thanks: 1
Thanked 3 Times in 3 Posts
Feedback Score: 0 reviews
Since your truck is a 4x4 wouldnt putting the 3.73 gears in the back make those tires spin faster than the front tires when in 4wd?
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 12:17 AM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors