What cooler do you have? What motherboard?
With a decent AIO or a huge air cooler with decent fans, you should be able to hit 4ghz. With the AIO you might be able to get a little higher.
Also every chip overclocks differently so you may not be able to get a super high overclock. Every chip has a limit for overclocking. Some people can get to 4.5ghz on that chip while some cant make it past 4ghz.