Notices
1999 - 2016 Super Duty 1999 to 2016 Ford F250, F350, F450 and F550 Super Duty with diesel V8 and gas V8 and V10 engines
Sponsored by:
Sponsored by: Real Truck

Regearing costs

Thread Tools
 
Search this Thread
 
Old Aug 2, 2014 | 08:25 AM
  #1  
FordmanNJ's Avatar
FordmanNJ
Thread Starter
|
Fleet Mechanic
10 Year Member
Liked
Loved
Community Favorite
Joined: Mar 2013
Posts: 1,729
Likes: 80
From: New Jersey
Regearing costs

Hello FTE!

Quick question. How much should I spend on regearing from 3.73s to 4.30s? I am trying to determine a budget for this project on the truck. The truck has a an E locker.

Afterall, I went from a 31.6 inch tall tire to 33.2 inches. This reduced my effective axle ratio to around 3.55. To bump it close to stock, I would have to regear to 3.93 according to the calculators I found on the matter. If figured if I elect to regear, why not go to 4.30s and get a descent jump in performance.

Thanks in advance on the advice!
 
Reply
Old Aug 2, 2014 | 09:21 AM
  #2  
David7.3's Avatar
David7.3
Postmaster
Joined: Jun 2014
Posts: 3,206
Likes: 3
From: Oakhust NJ Jersey Shore
Get professional help from several places

When you go from the 3:73 to say 4:30 you may have to change your carrier, or use a space because the pinion is that much smaller, this info you really need to research. ryder racing is one place I would checkout they eat, sleep gears. Even though your going alittle bit bigger in tires that jump in ratio will hurt fuel mileage , low end power as well. talk to some one who knows. DTS is another place to check out, but not just check out call them, tell them what you want, any future plans, going bigger, highway driving, off road power. they will know, Everyone on this site has there expertise and what they went through, but it might not be what you want. I had 3:73 in my 99PSD and replaced with lockers and 5:13, I Knew I wanted to go big and with my over drive, she does well on the highway, but im at red line at 80, should have gone taller but, this isnt my highway truck, so for me its fine.
 
Reply
Old Aug 2, 2014 | 10:29 AM
  #3  
MC5C's Avatar
MC5C
Posting Guru
Joined: Jun 2012
Posts: 1,171
Likes: 2
I usually figure around $1,000 an axle if done at a shop with a decent gear set. What issue are you having that you need to re-gear? That is less than a 5% change in diameter and is almost irrelevant to on-the-road performance. In fact I think there is a greater variation in the stock tires that come as options on the F250. I've swapped in tires that little bit larger and couldn't feel the difference driving at all.

Brian
 
Reply
Old Aug 2, 2014 | 10:41 AM
  #4  
Bigpipes 35's Avatar
Bigpipes 35
Cargo Master
10 Year Member
Liked
Loved
Joined: Feb 2011
Posts: 3,450
Likes: 13
From: Forest lake minnesota
You wont need to change the carrier for 4:30, As said it runs right around $1000 per axle and that is about what it cost me to do mine.. I have heard the 6.2 is a amimal with 4:30's
 
Reply
Old Aug 2, 2014 | 04:32 PM
  #5  
FordmanNJ's Avatar
FordmanNJ
Thread Starter
|
Fleet Mechanic
10 Year Member
Liked
Loved
Community Favorite
Joined: Mar 2013
Posts: 1,729
Likes: 80
From: New Jersey
I was thinking about going the 4.30 route for the towing aspect. I feel the 3.73s are a bit soft. Since I bought the truck used, it might have been nice to swap gears. However at $2000, I might just wait a while for the truck to be paid off before I pull the trigger on a set of gears.

Not a big rush. Just trying to get an idea of the costs involved. I was looking at gear sets. They were running around $500 and posters on various forums all said year it should cost $500 per axle. It didn't compute in my head unless I did the work.

If the cost was going to be around $1000-1400 complete, I would seriously think about. Gas mileage is no big thing cause I didn't buy the truck for a gas mileage. As it is right now, it is my DD. My wife and I are trying to get it paid off quickly so we can pick up a new ride for her. She doesn't mind the Explorer but she rather have a sedan for commuting.
 
Reply
Old Aug 3, 2014 | 09:06 AM
  #6  
Modularation's Avatar
Modularation
Senior User
Joined: Jul 2014
Posts: 130
Likes: 0
I will trade gearsets with you if they fit. Mine is a Dana 60 front Sterling rear LSD with 4.10 ratio 2002 F250. PM me.
 
Reply
Old Aug 3, 2014 | 07:55 PM
  #7  
FordmanNJ's Avatar
FordmanNJ
Thread Starter
|
Fleet Mechanic
10 Year Member
Liked
Loved
Community Favorite
Joined: Mar 2013
Posts: 1,729
Likes: 80
From: New Jersey
Hi,

Originally Posted by Modularation
I will trade gearsets with you if they fit. Mine is a Dana 60 front Sterling rear LSD with 4.10 ratio 2002 F250. PM me.
Thanks for the offer but I were to pull the trigger, it would be new parts.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
96LongBoxF150
1987 - 1996 F150 & Larger F-Series Trucks
6
Jul 2, 2015 09:57 PM
spunks00
1999 - 2003 7.3L Power Stroke Diesel
8
Oct 28, 2009 11:30 PM
OrangeJuice
1973 - 1979 F-100 & Larger F-Series Trucks
2
May 19, 2008 10:00 AM
WSP
Offroad & 4x4
15
Oct 22, 2007 07:19 PM
50calmike
1999 - 2016 Super Duty
18
Oct 23, 2006 07:55 AM




All times are GMT -5. The time now is 10:11 PM.

story-0
10 Ways Ford is LOSING to the Competition

Slideshow: 10 ways Ford is losing to the competition

By Joe Kucinski | 2026-06-15 09:52:01


VIEW MORE
story-1
Top 6 Best Deals Available on New Fords & Lincolns Right Now

Some great targets in today's expensive world.

By Brett Foote | 2026-06-15 09:35:19


VIEW MORE
story-2
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.

By Verdad Gallardo | 2026-06-12 11:01:55


VIEW MORE
story-3
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-4
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-5
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-6
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE
story-7
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-8
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-9
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE