What kinda diff in the front ???
Thread Starter
|
Elder User
Joined: May 2010
Posts: 520
Likes: 1
From: Alabama
What kinda diff in the front ???
I'm wanting to change gears in my 05 F250. From what I gather the rear is a sterling 10.25. I can't find anything on what size the front diff is.
Thanks for all the help I have gotten frOm everyone one on here. If not for all of you I would be lost on how to figure out an fix my truck.
Thanks for all the help I have gotten frOm everyone one on here. If not for all of you I would be lost on how to figure out an fix my truck.
Lead Driver
Joined: Jun 2007
Posts: 6,757
Likes: 5
From: Corvallis, OR
Front is a Dana 60R (reverse rotation) and the rear is a Sterling 10.5. All aftermarket gears are for 10.25 axles, so you'll be getting 10.25 gears and a 10.25 master install kit. Are you sticking with 37s, or a chance you may go larger in the future? With 37s about 4.30 gears are optimal.
Thread Starter
|
Elder User
Joined: May 2010
Posts: 520
Likes: 1
From: Alabama
im sticking with 37" tires but i am going to go from a 6 inch lift to a 8 inch lift. an if tires get to hard to find i may go with bigger ones. but i dont want to go bigger than 39.
dont know if it matters, but i do pull a 7500 lb camper about 4 to 6 times a year. thats one of the reasons i want to change the gears, so it will pull camper better an also to get a lil better MPG.
dont know if it matters, but i do pull a 7500 lb camper about 4 to 6 times a year. thats one of the reasons i want to change the gears, so it will pull camper better an also to get a lil better MPG.
Lead Driver
Joined: Jun 2007
Posts: 6,757
Likes: 5
From: Corvallis, OR
How fast do you like to run on the highway? If its anything over 70, you won't want 4.56 with 37s. Right now I have 4.30s with 35s, plan 37s next, and at 65 mph I'm turning 2k rpm, above that it hurts mileage. 4.56 would give you a near stock ratio with 38.5"-39" tires, 4.30s give you stock ratio with 37s.
Thread Starter
|
Elder User
Joined: May 2010
Posts: 520
Likes: 1
From: Alabama
How fast do you like to run on the highway? If its anything over 70, you won't want 4.56 with 37s. Right now I have 4.30s with 35s, plan 37s next, and at 65 mph I'm turning 2k rpm, above that it hurts mileage. 4.56 would give you a near stock ratio with 38.5"-39" tires, 4.30s give you stock ratio with 37s.
If I go to 8 inch lift with 39 my short 5'3" wife wouldn't b able to get in my truck.
Hhmmm. That could be a good thing thou.
Trending Topics
Lead Driver
Joined: Jun 2007
Posts: 6,757
Likes: 5
From: Corvallis, OR
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / Worst Features Of The 2025+ Ford Expedition
Brett Foote
10 Ways Ford is LOSING to the Competition
Joe Kucinski
Top 6 Best Deals Available on New Fords & Lincolns Right Now
Brett Foote
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Verdad Gallardo
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
Thread
Thread Starter
Forum
Replies
Last Post
dakotajeep
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
11
Jan 10, 2012 02:24 PM