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

Axle casing differences

Thread Tools
 
Search this Thread
 
Old Nov 28, 2019 | 12:22 AM
  #1  
colehardy's Avatar
colehardy
Thread Starter
|
New User
Joined: Apr 2015
Posts: 5
Likes: 0
Axle casing differences

Looked through some threads and couldn’t find much so figured I’d see if anyone could help.

My rear end differential (2008 F250 3.73 LS) and pretty much who rear end needs to be replaced I do have a replacement but it is extremely rusted out and needs new wheel bearings. This past weekend we just pulled the rear end out of my buddy’s truck (2011 F350 3.55 w/ elocker)and swapped in a pretty much new rear end from a 2018 that we found for a good deal. Basically my question is are the differential casings the same and will I will able to swap out everything from my good parts diff into the 2011 casing. Mostly just the pinion is what I n is is different as the 2011 one is much larger.
 
Reply
Old Nov 28, 2019 | 07:00 AM
  #2  
Just Strokin's Avatar
Just Strokin
Post Fiend
Joined: Nov 2001
Posts: 6,748
Likes: 118
From: Tallassee, ALabama
When you say the "pinion is much larger", are you talking about the diameter of the teeth or the shaft or what? The diameter of the pinion teeth will vary depending on the gear ratio. What ration is your rear end? What is the ratio of the 2011 rear end?
 
Reply
Old Nov 28, 2019 | 08:04 AM
  #3  
Desert Don's Avatar
Desert Don
Hotshot
15 Year Member
Liked
Loved
Community Favorite
Joined: Oct 2006
Posts: 10,170
Likes: 8,031
From: Texas
Originally Posted by colehardy
Looked through some threads and couldn’t find much so figured I’d see if anyone could help.

My rear end differential (2008 F250 3.73 LS) and pretty much who rear end needs to be replaced I do have a replacement but it is extremely rusted out and needs new wheel bearings. This past weekend we just pulled the rear end out of my buddy’s truck (2011 F350 3.55 w/ elocker)and swapped in a pretty much new rear end from a 2018 that we found for a good deal. Basically my question is are the differential casings the same and will I will able to swap out everything from my good parts diff into the 2011 casing. Mostly just the pinion is what I n is is different as the 2011 one is much larger.
Let me get this straight. You want to pull the carrier with the 3.55 gears from your buddies old diff and put them into your truck that now has 3.73 gears, correct? Is your truck a 4 wheel drive? If so, you need to do BOTH front and rear. Or is it that you are going to put your gears into his complete axle housing, and then put his axle under your truck?
The way your post sounds to me, you are also asking if the carrier ONLY can be swapped.......NO....both the pinion and the carrier must be swapped together. The ring and pinion are ALWAYS matched sets. Please clarify.
 
Reply
Old Nov 28, 2019 | 09:18 AM
  #4  
WWR's Avatar
WWR
Cargo Master
10 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2015
Posts: 2,920
Likes: 515
By pinion I'm guessing he means yoke.

I'm ASSuming the 10.5 uses a crush sleeve like the 10.25. I wouldn't go zipping off any pinion nuts without some research and an inch lb torque wrench...

There may be a crossover u-joint
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
hillcountryflt
1967 - 1972 F-100 & Larger F-Series Trucks
78
Sep 29, 2014 04:11 PM
joe_13894
1994.5 - 1997 7.3L Power Stroke Diesel
4
Feb 1, 2012 09:58 AM
89ford73
6.0L Power Stroke Diesel
1
Jul 18, 2010 11:56 AM
mudslingur
1973 - 1979 F-100 & Larger F-Series Trucks
12
Jul 21, 2007 02:48 PM
mudman13
1987 - 1996 F150 & Larger F-Series Trucks
4
Nov 20, 2006 02:14 PM




All times are GMT -5. The time now is 01:17 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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
story-7
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-8
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE
story-9
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE