If the ambient temperature is cool, if the thermal interface paste is premium, if you monitor CPU temperatures carefully...it probably would work. Would I do it? NO
If you want to overclock but don't necessarily want to reach for the stars (3.0, nice, easy OC), then consider a very inexpensive aftermarket cooler like the Arctic Freezer Pro 7. Not the best, but certainly capable of relative cool 3.0GHz.
I tried overclocking with the stock sink on one of my quads - just for ships and grins. WOW, that processor got HOT very FAST!