How to turn an LM741 op amp into a distorted portable guitar amplifier?
The voltage gain of the circuit that you now show is 2. Total of feedback resistors divided by the input resistor equals the gain. Depending upon the amplitude of the input voltage this may not offer as much clipping as you would like. You could increase the gain to 10 (feedback = 470K) and realize quite a bit more clipping for a lower level input signal. 

Note that you may want to steer away from the antique relic of the LM741. These do not operate very well unless the power supplies are +15V and -15V and the output will clip at levels about 2.5V below the +supply and 2.5V above the -supply. There are plenty of other much better opamps that can operate very well on a single voltage supply of 9V or even 5V.