While yes stock coolers are not that good, if you arnt going to overclock or anything they work just fine. But of course, you asked if you can get a good overclock on a stock cooler. The answer to that is no.
aevm recommended a really good cpu cooler, especially for that price.
I recommend it.
I have an e7200 at 3.8G - 1.31v. It never exceeds 57c. That was while using prime95. I am cooling with a Thermaltake Golden Orb 2. I know it isnt a great cooler, but i new the 45nm e7200 would be very cool, so why have a loud expensive cooler. I dont even hear my CPU's heat sink fan. But i am still 32c idel and usually 53c playing COD4 at max.
my point is, you dont need an expesive cooler for the e7200. The stock may be ok with low OCs. I would suggest getting a brand name $20 quality HS, but the stock cooler may work.
keep an eye on your temps, watch HWmonitor or coretemps for a couple of days.