Gear Help

Newbie question i tried searching but didn't find much. I was told that gears in the front and rear axles don't have to match as long as they are with in 0.02 of each other. The reason why I'm asking is that I have a dana 30 with 3.55's and i recently picked up a rear dana 44 out of an 87 XJ with 3.54 gears and i dont have the money to regear at this point. So has anybody tried this or was the guy who told me this just bullshiting me?

They can be within a 2% difference. You can run, lets say, 5.43 and 5.38 gears without having to worry.

You will be fine.

different axles have different sized ring gears and pinion gears. you get the gear ratio by dividing the number of teeth in the ring gear by the number of teeth in the pinion gear.

since you have to have a whole number of teeth, and all axles have different size gears it comes down to being pretty close. 3.55, 3.73, 4.10, 4.56 are all pretty common and you will see variants like 3.54, 4.11 and the like..

-Tim

it will be fine CanMan in right....don't worry about it just put it in.

Thanks I think I will throw it in and wait until the money comes for 4.56's

Oil Town XJ said:

Thanks I think I will throw it in and wait until the money comes for 4.56's

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Why not just go 4.88's? The D44 and the D30 will support them.

CanMan said:

Why not just go 4.88's? The D44 and the D30 will support them.

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x2. i run 4.88s and they are the best crapload of money i spent on the heep. 4.0, aw4, dana44, 35"s

-Tim