cavscout

I was about 1 mile from at the gas pump recently when my 72 240z refused to start. I had my wife crank over the engine until I saw smoke coming from the smog pump, air pump, whatever it is called. The pump would not turn and the belt was up around the rim of the pulley, causing the other belts to be frozen. I had no tools, so I cut the belt and drover her home. My question: is it safe to drive the car without that belt? Will not having this pump working affect the performance or gas mileage of the car? I am not really concerned about emissions at the moment, I just need my baby to get me to work!