When changing the water pump on my 95 monte should I also change the timing belt?

How long does it take to change the water pump %26amp; its a 3.4 engine|||You don%26#039;t have a timing belt.|||It would be a good idea to change the belt any time you do work of this nature. Don%26#039;t throw it away though, keep it in the trunk. My old man once saved several hours by having his old one in the trunk of his %26#039;78 Monte. Just replaced it on the spot and was on his way.