Go Back   iRV2 Forums > TRAVEL TRAILER, 5th WHEEL & TRUCK CAMPER FORUMS > Trailer Towing and Tow Vehicles Discussion
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 06-20-2010, 04:39 AM   #1
Junior Member
 
Shekinah's Avatar
 
Join Date: Jun 2010
Posts: 20
Axle ratio change costs

Hi Guys,
I've read so many of your questions and answers throughout the site...It's really good and a big thank you for past Q and A
My question concerns 2006/7 Dodge 3500 4 x 2.(to pull a 32 footer).
On this truck the 4.10 axle ratio gives a greater towing capability (21,000 to 23,000lbs) This info comes from the Dodge 2006 catalogue.
What does it cost to change from a 3.73 axle ratio to a 4.10?
Tom.
__________________

__________________
Shekinah is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 06-20-2010, 08:47 AM   #2
Senior Member
 
450Donn's Avatar
 
Join Date: Jun 2006
Location: Dallas,OR
Posts: 2,555
IMHO I would not worry about it. The axle ratio you have is almost perfect most trailers up to and including 12K. I have a 6.7L 4.10 rear end and while it works great for my weight (13,350 ready to camp) I am firmly convinced that the 3.73 would also work just as well. Just because you are close I would not change until you actually tow a few times to figure out if it is necessary.
As to cost, depending on where it is done, it could cost you as little as 750 dollars to as much as 1500 dollars per axle. Best prices would probably be a performance shop that does it all the time.
__________________

__________________
Don and Lorri
2007 Dodge 3500 dually
Resident Dummy.
450Donn is online now   Reply With Quote
Old 06-20-2010, 09:29 AM   #3
CD
Senior Member
 
Join Date: Sep 2002
Location: Kingston, Wa. USA
Posts: 1,221
Shekinah
I agree with Don on one point. Try it first. I had a 354 in our first 2001 and I didn't like it. I don't like towing @ 65/70 which you need to do to get into the best power range (at least with the 6 speed manual). At 60 it was running @ about 1750 and 2000 is the sweet spot. When I would start up a hill I had to shift down or the exhaust temp would start climbing. The 373 won't be quite as bad. I only lost about 1/2 MPG with the 410.
__________________
Cliff

'01 3500 Ram QC HO 6sp. BD Exhaust Brake
CD is offline   Reply With Quote
Old 06-20-2010, 11:27 PM   #4
Junior Member
 
Shekinah's Avatar
 
Join Date: Jun 2010
Posts: 20
Thanks Don and Cliff,
"it could cost you as little as 750 dollars to as much as 1500 dollars per axle"
Does this mean I'd need to do both axles (on a 4 x 4)?
Also, our pref for the 5th wheel (not bought yet) is a 33ft Jayco (2006 ish) or Sundance 2010 which has a GVWR of 13,970.
The 3.73 axle has a tow rating of 21,000 whilst the 4.10 is 23,000 lbs.
I'm thinking the rig will go between the two weights here.
I understand the sense of your advice to wait and see but it will start pushing the legal aspect here.
Tom.
__________________
Shekinah is offline   Reply With Quote
Old 06-21-2010, 12:32 AM   #5
CD
Senior Member
 
Join Date: Sep 2002
Location: Kingston, Wa. USA
Posts: 1,221
Either change both or remove front drive line because you CAN"T use 4X4.
__________________
Cliff

'01 3500 Ram QC HO 6sp. BD Exhaust Brake
CD is offline   Reply With Quote
Old 06-21-2010, 05:42 AM   #6
Moderator Emeritus
 
RustyJC's Avatar


 
Texas Boomers Club
Join Date: Jul 2000
Location: Cypress, Texas USA
Posts: 8,854
Quote:
Originally Posted by Shekinah View Post
Does this mean I'd need to do both axles (on a 4 x 4)?
Absolutely, if you're ever going to shift into 4 wheel drive mode.

Rusty
__________________
2016 Ram Longhorn 3500 Dually 4x4 CCLB, 385/900 Cummins, Aisin AS69RC, 4.10
2014.5 DRV Mobile Suites 38RSSA #6972
Come join us on a TEXAS BOOMERS rally!
RustyJC is offline   Reply With Quote
Old 06-21-2010, 06:57 AM   #7
Senior Member
 
Ray,IN's Avatar
 
Join Date: Aug 2001
Location: North America somewhere
Posts: 13,709
I had differential gearing in my 2WD 96 Dodge 3/4T CTD; from 3:54 to 4:10 and the change was quite noticeable. Total cost, in 2005, was just over $800.You can get an idea of gear-set cost for your vehicle here: Ring And Pinion Gears, Axles and Axle Shafts, Drivetrain Parts and Tools - Accu Auto Parts
Labor may be twice the cost of the gear-set. Who performs the work is very important. A poor job will make you very unhappy. I asked about where to go, and located a specialty shop that only works on differentials, transfer cases, etc., and was well pleased with their work.
__________________
2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member,FMCA."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert the Constitution. "Abraham Lincoln"
Ray,IN is online now   Reply With Quote
Old 06-21-2010, 07:30 AM   #8
Senior Member
 
Parkerrs's Avatar
 
Newmar Owners Club
Join Date: Jun 2010
Location: Dallas, Ga.
Posts: 224
I used to tow a 36' Mountain Aire, approx. 14,000lbs. with a 99 Dodge 3500. I used the 3:54 ratio and had no problems. I do tow at 65MPH or better. The only thing you had to worry about was turning off the overdrive while in the mountains. I only did that on steep grades. I used this combination from coast to coast and over the rockies several times with no problem. I also averaged about 13.5-14mpg with the higher gear.

The torque of the diesel made the difference, I wouldn't have attempted that gear ratio with a gas engine. Also for the rockies or out west I installed a 100 gal. aux. fuel tank in the bed with a transfer switch and an exhaust brake. The unit was also an automatic trans. and pulled just fine.
__________________
Tommy Parker
2007 Newmar Kountry Star 3914, ISL400
2001 Jeep Cherokee toad, M&G brake/2011 Jeep Grand Cherokee Overland
Parkerrs is offline   Reply With Quote
Old 06-21-2010, 04:42 PM   #9
Junior Member
 
Shekinah's Avatar
 
Join Date: Jun 2010
Posts: 20
Hey Guys,
Thanks for your answers - my 5th wheel knowledge has just risen another couple of levels because of your answers!
Tom.
__________________
Shekinah is offline   Reply With Quote
Old 06-23-2010, 11:02 AM   #10
Senior Member
 
SuperGewl's Avatar
 
Winnebago Owners Club
Ford Super Duty Owner
Join Date: Aug 2004
Location: Oregon
Posts: 1,782
Quote:
Originally Posted by Shekinah View Post
Thanks Don and Cliff,
"it could cost you as little as 750 dollars to as much as 1500 dollars per axle"
Does this mean I'd need to do both axles (on a 4 x 4)?
Also, our pref for the 5th wheel (not bought yet) is a 33ft Jayco (2006 ish) or Sundance 2010 which has a GVWR of 13,970.
The 3.73 axle has a tow rating of 21,000 whilst the 4.10 is 23,000 lbs.
I'm thinking the rig will go between the two weights here.
I understand the sense of your advice to wait and see but it will start pushing the legal aspect here.
Tom.
As far as legal aspect it won't matter because you won't be able to get your TV reclassified very cheeply even if you do change the gearing.
__________________
Retired Navy Submariner
2014 Itasca Sunstar 35F; 5 Star tuned; 2014 Jeep Cherokee TrailHawk
SuperGewl is offline   Reply With Quote
Old 06-24-2010, 01:57 AM   #11
Junior Member
 
Shekinah's Avatar
 
Join Date: Jun 2010
Posts: 20
SuperGewl,
I hadn't thought of that. So the authorities would still class the vehicle as it was originally (3.73), even if you could show receipts for the upgrade work (to 4.10).
To reclassify, would they need a full machinery inspection or just some kind of affidavit from the workshop that carried out the work?
__________________
Shekinah is offline   Reply With Quote
Old 06-24-2010, 11:13 PM   #12
Senior Member
 
SuperGewl's Avatar
 
Winnebago Owners Club
Ford Super Duty Owner
Join Date: Aug 2004
Location: Oregon
Posts: 1,782
Quote:
Originally Posted by Shekinah View Post
SuperGewl,
I hadn't thought of that. So the authorities would still class the vehicle as it was originally (3.73), even if you could show receipts for the upgrade work (to 4.10).
To reclassify, would they need a full machinery inspection or just some kind of affidavit from the workshop that carried out the work?
I havee not been able to get a clear answer to getting your TV reclassified for upgrades. Some have said it doesn't matter, it's only what the VIN # GVWR/GCVR as stated by the MFG and some have said it's not cost effective. If you can find out actuall who would do it and the cost please let me know because I would want mine done also.
__________________
Retired Navy Submariner
2014 Itasca Sunstar 35F; 5 Star tuned; 2014 Jeep Cherokee TrailHawk
SuperGewl is offline   Reply With Quote
Old 06-28-2010, 02:49 PM   #13
Senior Member
 
Join Date: May 2001
Location: Spicewood, Tx
Posts: 573
Quote:
Originally Posted by SuperGewl View Post
I havee not been able to get a clear answer to getting your TV reclassified for upgrades. Some have said it doesn't matter, it's only what the VIN # GVWR/GCVR as stated by the MFG and some have said it's not cost effective. If you can find out actuall who would do it and the cost please let me know because I would want mine done also.
Generally, DOT only cares that you don't exceed the GAWRs, meaning that you are not overloading the tires/axles. They don't care about GVWR or GCWR. Your state only cares about GVWR, but even then, they don't care what the manufacturer claims the GVWR is, the state will gladly license and tax you for whatever GVWR you want to put on the truck. And nobody cares about GCWR as long as your actual weight is below 26K. So, it would be a waste of money to get the truck re-certified for a higher GCWR and that is the only number that changes with an axle ratio change.
__________________
Larry Day, Texas Baptist Men volunteer
'13 Silverado LT 3500HD D/A CCSB 2wd, custom RKI bed
'17 Puma 351THSS toyhauler
dayle1 is offline   Reply With Quote
Old 06-29-2010, 12:29 AM   #14
Senior Member
 
Ray,IN's Avatar
 
Join Date: Aug 2001
Location: North America somewhere
Posts: 13,709
Larry is right. In the U.S. door sticker ratings have no basis in law, they are recommendations. LEO's do have discretion here to arrest obvious over-weight (unsafe) rig drivers.
Some Canadian provinces do have laws recognizing door sticker ratings as legal standing, and enforce them.
__________________

__________________
2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member,FMCA."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert the Constitution. "Abraham Lincoln"
Ray,IN is online now   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Frequent oil change danes-on-tour Toads and Motorhome Related Towing 29 11-13-2010 10:46 PM
tag axle brake caymann MH-General Discussions & Problems 2 06-02-2010 08:30 PM
Tires wearing on inside, rear axle MojaveJoe 5th Wheel Discussion 6 04-20-2010 10:42 PM
Do-it-yourself oil change danes-on-tour Cummins Engines 24 04-18-2010 03:23 PM
axle ratio??? Diesel Guy Excel Owner's Forum 3 03-24-2010 10:09 PM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 03:30 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.