Engine knocking...

Well, I just finished my supercharger install and driven the car for about a total of 10 minutes since. I wake up this morning to go and fix a little belt problem I was having, when I was done I started it up and it started tapping/knocking, not overyly loud but noticeable. So I start looking for things in the engine bay and dont see anythink that could be causeing this. Then I took a screwdriver, put the handle to my ear and the blade on different parts of the motor. Valve covers, heads, intake, supercharger, everything. Its coming from the motor Iam pretty sure. I can just barely hear the knocking from the valve covers and heads, but it sounds pretty bad when I put it on the intake...any ideas....cant really afford a rebuild now....