The pullies should be fine. You should check to ensure the belt is tracking on the pullies correctly. If not, stop the car and realign the belt.
Marc
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'00 Trans Am WS6 w/ 25K miles - Lovin' it!!
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RIP '99 GTP w/ 41K miles - Totaled in fire
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RIP '97 GTP w/ 192K miles - Totaled when broadsided