Changing Gear ratios
Thread Starter
|
Elder User
Joined: Jul 2012
Posts: 769
Likes: 0
From: Poplar Bluff, MO
Changing Gear ratios
truck is in my sig. Right now it has 3:55 and with my 5.0 and 33" tires it certainly doesn't have crazy off the line power. Don't get me wrong it isn't a dog because of some minor upgrades but I want better off the line power. Is changing the ratios something I could easily do myself?
Freshman User
Joined: Sep 2013
Posts: 39
Likes: 0
EASIEST way??? Find a good axle from a donor truck with the ratio you want, it's a unbolt/bolt in operation. Now, one of the other guys here, will have to explain how to set up the speed sensor etc if it has one.
Setting up the Ring and Pinion in YOUR axle, requires some special know how, I'ds not do it myself.
Setting up the Ring and Pinion in YOUR axle, requires some special know how, I'ds not do it myself.
Logistics Pro
Joined: Mar 2012
Posts: 3,507
Likes: 121
From: Oregon
I found a front diff with 4.10's, but the PO put them in. I think I'm going to have to redo it as well. But, for $100 for the diff and an entire rear axle I can't complain. Keep an eye out. They are out there, you just have to look.
Trending Topics
Fleet Owner
Joined: Oct 2005
Posts: 20,789
Likes: 1,753
From: Kentucky
It is not rocket science to install gears but it does require some special tools and knowledge. Trying to explain it over the web is futile at best. It is not for the average do-it-yourselfer. You could try to find axles from a F250 but then you would have to use 8-lug wheels.
Personally I do not think a swap from 3.55 to 4.10 (that is the shortest gear you will likely find in a donor) is going to do much for you. That 5.0L needs gears to get moving. The larger the tire, the shorter the gear you need. I have recommended 4.56s to you and others with similar combos before. When it comes to gears go big or go home.
Personally I do not think a swap from 3.55 to 4.10 (that is the shortest gear you will likely find in a donor) is going to do much for you. That 5.0L needs gears to get moving. The larger the tire, the shorter the gear you need. I have recommended 4.56s to you and others with similar combos before. When it comes to gears go big or go home.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Freshman User
Joined: Sep 2013
Posts: 39
Likes: 0
Hey, I never promised you a Rose Garden! LOL!
Installing a R & P requires setting up proper lash etc, if you get it either too much, or too little, you'll eat them up fast. Find someone who knows his stuff, and let him set the pinion depth. But WATCH him, so you can do it next time!
Installing a R & P requires setting up proper lash etc, if you get it either too much, or too little, you'll eat them up fast. Find someone who knows his stuff, and let him set the pinion depth. But WATCH him, so you can do it next time!
Posting Guru
Joined: May 2012
Posts: 1,271
Likes: 9
From: Franklin, IN
Finding a third member for the front axle with 4.10s will be cake. Many F250s left the factory with 4.10 gears and the third members are 100% bolt in, even if it's a D50.
That leaves just one axle to regular if you can find an 8.8 from a 1/2 ton with 4.10s
That leaves just one axle to regular if you can find an 8.8 from a 1/2 ton with 4.10s
Fleet Owner
Joined: May 2009
Posts: 21,437
Likes: 76
From: Gilbert, PA
I REALLY dont see that being the case, since a D44 uses a different ring rear than a D50
Posting Guru
Joined: May 2012
Posts: 1,271
Likes: 9
From: Franklin, IN
I wasn't saying that a D50 gear set would bolt into a D44 third member. I was saying a D50 third member will bolt into the D44 axle beams, replacing the entire factory third member.
Fleet Owner
Joined: May 2009
Posts: 21,437
Likes: 76
From: Gilbert, PA
Axle shaft are the same diameter and spline count? What about the u-joint?
Posting Guru
Joined: May 2012
Posts: 1,271
Likes: 9
From: Franklin, IN
Axle shafts are in fact the same diameter and spline count. Actually, a very popular upgrade for the off-road crowd using the stock 1/2 ton TTB is to swap in the D50 center stub shaft to get a larger u joint in that location.