Gear ratios, someone please help!
Thread Starter
|
Postmaster
Joined: Aug 2003
Posts: 2,873
Likes: 0
From: St. Peter
Gear ratios, someone please help!
I have an 8.8 axle with 3.55 gear ratio's. I am going to build this truck up for some offroading. Therefore, i'll be putting in a locker in the axle, but i want to swap the 8.8" out for the 9" axle before i do this. The only problem is is that the 9" only have 3.50 gears. Will i have a problem with 3.50's in the back, and 3.55's in the front, or wont i even notice it? Or is there a way i can swap the 3.55's in the front for some 3.50's in the back.
Lead Driver
Joined: Dec 2002
Posts: 5,491
Likes: 16
From: Kuna ID
You should have a D44 front axle, and I believe you can get 3:50 gears for it. My 79 F-150 had a D44/9" with 3:50 gears. I don't know if being a straight axle D44 vs. TTB D44 makes the gears any different.
Posting Guru
Joined: Jan 2003
Posts: 1,388
Likes: 0
From: SE Texas
The front TTB D44 came with the 3.50 gears w/ the 3.50 9" rear, and the 3.54 ratio w/ the 3.55 8.8". I think that the 3.54 D44 /3.50 9" combo is O.K., But I would be real concerned with a large spread like 4.10/3.55. You can damage the transfer case.
Lead Driver
Joined: Dec 2002
Posts: 5,491
Likes: 16
From: Kuna ID
Different offset in the gears i beleive is actually better for off roading purposes. my friend uses 4:11's in the fronts with 3:56's in the rear its a beast off road
Freshman User
Joined: Jun 2001
Posts: 34
Likes: 0
It may be ok if the diffeent axles can spin to make up the differencebut any tim you have one axle spinning faster than the other as on the concrete you are going to have expensive problems. Tires about 1/2 inch or so shorter may help.
