Rear diff question issue problem - Ford Powerstroke Diesel Forum
LinkBack Thread Tools Display Modes
post #1 of 2 Old 07-28-2014, 02:53 PM Thread Starter
SoTX's Avatar
Join Date: Dec 2006
Location: San Antonio, TX
Posts: 51
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Rear diff question issue problem

Alright first of all I have a fleet of 15 F450' and 550's I have 2 F 350's and 2 -250's. Now with that said I have in all my 38 years of being in business never had a single company vehicle have rear end failure, yet I have had two of my personal trucks have rear ends blow up on me. First was an 07 F350 SRW crew cab long bed with a 6.0. When I bought it from dealer I had them swap the gears to 4:56. 150,000 miles in and bam. Now this week on my E99 F250 I am 165,000 in and whack goes the gears. I have been running a synthetic gear oil in th 99.
I tow heavy prolly once every 2 or three months, the rest of the time it's just a wakeboard boat on the weekends. You think this is coincidence or am I possibly doing some driving habit I shouldn't?

E 1999 F250 4x4 Crew Cab short Bed
4R100 automatic
7.3 PSD
2" lift
6.0 Transmission cooler
Glow Shift gauges on pilar, trans, egt, boost
35's on 17's
RiffRaff RDP 6637 Filter Kit intake
4" MBRP exhaust
South Texas Outfitters:
50 gallon custom fuel and tool plumbed direct
Heavy Duty rear bumper
Custom heavy duty front bumper
headacke rack
Fender flares
Rhino lined all add ons
Rhino lined rocker panel
High lift Jack

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
SoTX is offline  
Sponsored Links
post #2 of 2 Old 07-28-2014, 03:13 PM
Compression Ignition Addict
hansel's Avatar
Join Date: Dec 2006
Location: Flowery Branch, GA
Posts: 2,367
Thanks: 32
Thanked 102 Times in 96 Posts
Mentioned: 1 Post(s)
Quoted: 100 Post(s)
Feedback Score: 0 reviews
Wow, you are having some bad luck with rear gears in your truck's, is the clutch's going out or is the ring gear and pinion failing????

I've broke my share of 5.0L Mustang rear gears drag racing, but that comes with drag racing the only other rear end job I did for a guy was when a driver of a Limo, somehow the rear end leaked and he toasted the entire rear end.

2001 7.3L CCSRW 4X4
Airiad Intake 4" Flo-Pro Exhaust
ISSPRO EGT/Transmission
PHP Hydra
2015 Heartland Prowler
hansel is offline  
Sponsored Links

Quick Reply

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:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


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
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

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

For the best viewing experience please update your browser to Google Chrome