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4x4 wheel speed difference

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Old Dec 30, 2007 | 02:53 PM
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4x4 wheel speed difference

I heard that when you have your truck in 4X4 and your doing say 60kmh that your front wheels are actually only geared to do 59.3kmh. These numbers aren't exact, but what i am getting at is that your front wheels are geared to go a little bit slower than your rear wheels. Is this true? and why is this? Is it designed like this?
 
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Old Dec 30, 2007 | 03:12 PM
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No they are geared the same front and rear. If not it would tear up the running gear. Break a axle a u-joint or damage the transfer case itself.
 
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Old Dec 30, 2007 | 03:14 PM
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some vehicle are geard differently like the back would be 4.12 and the front 4.11 or somthin like that.
 
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Old Dec 30, 2007 | 03:22 PM
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You really are not supposed to be using 4x4 at those speeds unless you are dead straight.When the wheels turn the front wheels (both left and right) acually turn at different speeds compared to the rear wheels.That is where I have seen transfer cases split in two or front diffs just explode.The rears allways seem to be fine.
 
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Old Dec 30, 2007 | 04:39 PM
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I was talking about speed in Kilometers an hour (Canadian here) so 60 isn't that fast.Why would you have 4.12 gears in the rear and 4.11 in the front. I would assume that things would be prone to breaking as was mewntioned in another post here.
 
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Old Dec 30, 2007 | 05:34 PM
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The one point differance just helps it pull better. You can truck along at 70+ MPH in 4 wheel high on pavement with todays systems. (I have done it many times for 1000's of miles)
Don't worry about it.
 
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Old Dec 30, 2007 | 05:42 PM
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I had a 62 F250 4wd that had a Dana24 4:55 in front and a Dana60 4:56 in back. Both stock units.
 
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