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[byantdt]

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A stock front axle has an OPEN differential. The "wheel hop" you are feeling is caused by the u-joints. The u-joints have a limited angle of operation. The front wheels can turn greater than this angle of operation. Be careful when in four-wheel drive and making turns. These engines have enough torque to snap those axle shafts and u-joints like dry twigs.

I don't like the Dodge front end for this reason. Their front shafts spin all the time. And it is for this reason that the front u-joints don't last very long. Tight turn = broken u-joint. No dodges for me!

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what kind of limited edition axles are ya'll running that the outer shaft u-joints bind & cause bucking? want to test that theory? unlock the hubs, turn the truck full lock either direction, put the transfer case in neutral. now crawl under the truck and spin the driveshaft. if you're theory is correct the axle will bind up. but my friends, you will find that it will rotate quite easily, no binding. like casey_1 said, the bucking is caused by the tires traveling at two different speeds in a turn.