1994 dodge ram 1500 4x4 front end bounces sometimes and bad.
If "bounces" is referring to that continuous up-and-down motion after passing over a dip in the road, then that has to be bad shocks. Inspect the shocks for excessive leaks, or unbolt one end and check for any resistance while extending and collapsing it by hand.
If you're talking about more of a violet shudder; that can be a number of things including tires, loose front suspension and/or steering parts and alignment angles being severely off.
Let me know what you find after a thorough inspection of the front end.