What have you done in the Bios?
First thing I would do is raise the processors multiplier incrementally for now and leave the memory alone completely until you reach max CPU overclock. WIth your cooling, motherboard and CPU I would expect a maximum overclock 4.4ghz or greater but nothing is guaranteed. Watch your temps, AMD procs don't like to go over 70c, some people say cooler but I haven't had any issues so far. I settled at 4.5ghz with my wifes 8300, it seemed to be the best mix of stability and speed I could do with cheap air cooling (hyper 212+). You mileage will vary.
1600 ram like yours most likely wont take a huge overclock, I persoanlly have never really seen any really gain in a 100mhz memory overclock but go for it slowly, you could probably raise the memory voltage to 1.6 and loosen the timings to something like 10-11-11-30 (most memory is going to need some finesse and trial and error to get the timings right) and maybe get 1866 or so.
If you need more I would suggest a guide like this one http://www.overclock...-results-coming
His: i5 750 @ 4.1GHz / GA-P55A-UD3 / Corsair DDR3 8gb / MSI HD 7970 OC / Noctua D15 / Seagate 500GB HDD / Lian Li K58 / Corsair TX 650
Hers: FX 8320 @ 4.51GHz / GA-990XA-UD3 / G.Skill DDR3 8gb / EVGA GTX 660 SC / Hyper 212+ / WD 1TB Green / Antec 300 / Corsair CX 600
Parents: i5 4590 @ 3.5GHz / GA-G1 Sniper / Corsair DDR3 8gb / MSI GTX 960 / Hyper 212+ / 128gb SSD / 1tb HDD / F.D. R4 / Corsair CXM 500