Re-gearing 4:30's - Ford Powerstroke Diesel Forum

 
LinkBack Thread Tools Display Modes
post #1 of 7 Old 09-28-2013, 12:28 PM Thread Starter
Compression Ignition Addict
 
INTERNATIONAL7.3's Avatar
 
Join Date: Jul 2009
Location: vancouver
Posts: 747
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Re-gearing 4:30's

Hello everyone,

I am considering swapping my current 3:73's out for 4:30's for the following reasons;

- 35" tires
- do a lot of short distance heavy hauling for my construction company.
- transmission gets hot while hauling heavy through the BC mountains during the summer. I already have a 6.0 cooler, upgraded valve body, and HD torque converter.

So my questions are;
- can I buy a kit somewhere, that includes all necessary components and parts?
- I am 4x4, I have heard that i would have to change my front differential also? Is this true? And why?
- I've heard that the v10 triton trucks came with 4:30's. could I find one at a wrecker and do a axle swap? If that's easier?


Any comments or opinions would be much appreciated!!.

2000 F250 lariat 7.3 - 4.5'' Donahoe Racing/Bilstein 5100's/BDS DualSS with Blisteins/20''MotoMetals/35's toyo's/08tailgate
/09 taillights/07 bumper, 07 billet grille/07headlights/Recon clear Cab lights/Chicken lights/dynamatt/zoodad/6637 Intake/MBRP 5" Exhaust
/Diprocol gauges/JohnWoods valvebody/6.0 Trans Cooler/Pioneer Avic D3/Bushwacker Flares/PHP tunes/AMP Research/ 8.5' Western MVP plus
INTERNATIONAL7.3 is offline  
post #2 of 7 Old 09-28-2013, 12:54 PM
m j
Compression Ignition Addict
 
Join Date: Nov 2012
Posts: 298
Thanks: 0
Thanked 8 Times in 8 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
front and rear gears must match.
where in BC are you? best pricing on the parts will be at BCC in abbotsford.
its pricey stuff. you will need a master install kit for the front d60 and a master install kit plus a crush sleeve eliminator for the rear
I am in Mission. when I bought my lockers and install kit BCC was charging prices right off of the Randy's ring and pinion website which is about 1/2 what everywhere else charges.
gear install and setup is a big job

1997 F250 rclb 4x4, Comp910s, SRP1.1, Irate T4 s468,FullForce 350/200, homebrew efuel with i̶n̶ ̶t̶a̶n̶k̶ ̶a̶e̶r̶o̶m̶o̶t̶i̶v̶e̶ ̶1̶1̶1̶4̶2̶ A1000 5/8" drawstraw, Diesel Innovations fuel rail feed fittings, balljoint D60f Detroit Locker, zf5 sachs K70263-01CB ceramic clutch , Grizzly locker 10.25, 315/75/16 Wrangler MT/Windowed 7.3 Oct 9/14
m j is offline  
post #3 of 7 Old 09-28-2013, 01:02 PM
Serving Our Country!
 
JSchuricht's Avatar
 
Join Date: Aug 2007
Location: Manor, TX
Posts: 2,969
Thanks: 0
Thanked 25 Times in 24 Posts
Mentioned: 1 Post(s)
Quoted: 0 Post(s)
Feedback Score: 2 reviews
4.30 is a bit on the low side but if your primarily towing it will be great. The reason for doing both front and rear is that if you only do one, when your in 4x4 the front will be spinning a different speed than the rear. For some dedicated off road vehicles it can work but under normal use, you will break something. Now if you plan on never using 4x4 and I mean never, not occasional use then you can get away with just doing the rear.

There are kits available, check out Youkon gear. You should have a Dana 50 front and Sterling 10.5 rear axle. For the average person, swapping the axles will be easier and quicker. Go here for a general guide on what needs to be done. It's not as simple as pulling the gears out and tossing in a new set, you have to adjust tolerances in multiple places so the gears mesh properly. Each adjustment affects all the other adjustments so it can take many hours of pulling the gears out to change a shim and checking the pattern/backlash. If you do the axle swap, get new U bolts, don't reuse the old ones.

One more thing I want to address is your transmission. It shouldn't be running hot with a 6.0 cooler even with heavy towing. What temperatures are you seeing?

JSchuricht is offline  
post #4 of 7 Old 09-28-2013, 01:52 PM
Compression Ignition Addict
 
schlutzer's Avatar
 
Join Date: Apr 2012
Location: Stratford, Ontario
Posts: 2,437
Thanks: 34
Thanked 136 Times in 120 Posts
Mentioned: 0 Post(s)
Quoted: 17 Post(s)
Feedback Score: 0 reviews
It's up to you but I think 4.30's are a bit much.

Your front and rear gears must match otherwise your front and rear tires will spin at different speeds... causing insane stress on the drive train, and the weakest link failing.

AFAIK the only stock trucks to come with 4.30's were DRW trucks. 4.10s are easier to find and I personally think that.s what you would be happier with. With 4.30's you are going to be around 2500rpm at 100km/h or there abouts.

Please check out my 7.3 Enthusiast Facebook group! All are welcome! LINKY

schlutzer is offline  
post #5 of 7 Old 09-28-2013, 01:54 PM
Serving Our Country!
 
JSchuricht's Avatar
 
Join Date: Aug 2007
Location: Manor, TX
Posts: 2,969
Thanks: 0
Thanked 25 Times in 24 Posts
Mentioned: 1 Post(s)
Quoted: 0 Post(s)
Feedback Score: 2 reviews
4.30 is a bit on the low side but if your primarily towing it will be great. The reason for doing both front and rear is that if you only do one, when your in 4x4 the front will be spinning a different speed than the rear. For some dedicated off road vehicles it can work but under normal use, you will break something. Now if you plan on never using 4x4 and I mean never, not occasional use then you can get away with just doing the rear.

There are kits available, check out Youkon gear. You should have a Dana 50 front and Sterling 10.5 rear axle. For the average person, swapping the axles will be easier and quicker. Go here for a general guide on what needs to be done. It's not as simple as pulling the gears out and tossing in a new set, you have to adjust tolerances in multiple places so the gears mesh properly. Each adjustment affects all the other adjustments so it can take many hours of pulling the gears out to change a shim and checking the pattern/backlash. If you do the axle swap, get new U bolts, don't reuse the old ones.

One more thing I want to address is your transmission. It shouldn't be running hot with a 6.0 cooler even with heavy towing. What temperatures are you seeing?

JSchuricht is offline  
post #6 of 7 Old 09-29-2013, 02:19 PM
m j
Compression Ignition Addict
 
Join Date: Nov 2012
Posts: 298
Thanks: 0
Thanked 8 Times in 8 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
the hills are pretty big in BC. I can see it making heat going up the Smasher or Blueberry-Paulson or Salmo-Creston.
I havent seen anything like them in the western states I ran.

1997 F250 rclb 4x4, Comp910s, SRP1.1, Irate T4 s468,FullForce 350/200, homebrew efuel with i̶n̶ ̶t̶a̶n̶k̶ ̶a̶e̶r̶o̶m̶o̶t̶i̶v̶e̶ ̶1̶1̶1̶4̶2̶ A1000 5/8" drawstraw, Diesel Innovations fuel rail feed fittings, balljoint D60f Detroit Locker, zf5 sachs K70263-01CB ceramic clutch , Grizzly locker 10.25, 315/75/16 Wrangler MT/Windowed 7.3 Oct 9/14
m j is offline  
post #7 of 7 Old 09-29-2013, 03:09 PM
Compression Ignition Addict
 
ScottyP5947's Avatar
 
Join Date: Aug 2008
Posts: 691
Thanks: 1
Thanked 2 Times in 2 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
I had a '07 V10 with 4.30 gears in it. With 33" tires it was a beast!
I have no idea if the diffs would swap right in, but they are out there.
Scott

2000 XLT F-250 7.3 Crew Cab Auto w/Transgo shift kit
Zoodad
4" MBRP turbo back exhaust w/muffler
PHP TS chip - 65 tow/80DD/120 race
Stancor relay
Caterpillar ELC coolant
Broken-into door lock mod
6637 filter
285/75/16 Hankook ATM's
2" Rough Country add a leafs all around
In the Driveway:
2000 VW TDI Beetle, chipped! (For the wife)
1995 Ford Mustang 3.8 (SOLD!)
2012 Dodge CCSB 2500 w/Hemi
ScottyP5947 is offline  
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:
OR

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
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