What kinda diff in the front ???
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Elder User
Joined: May 2010
Posts: 520
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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
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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.
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Elder User
Joined: May 2010
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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
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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.
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Elder User
Joined: May 2010
Posts: 520
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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.
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Lead Driver
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From: Corvallis, OR
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