There is not really a true setting for an oc cause all chips are not the same. You can try google for a guide. When I first learned to oc I would write down the setting before I saved the setting in my bios in case the oc failed. It all about trial and error. Good luck.
I have the same EVGA Classified motherboard and an i7-920 CPU. I am running at 3.82 GHz for over 18 months. Very stable and temps around 30 degrees C idle (right now 25 degs C as I type this). Apps open are 5 internet tabs and Photoshop.
Here are my settings:
Bus Speed - 182 MHz
Voltage - 1.270 (max. is 1.375 V)
RAM - 1,452 MHz (underclocked from 1,600 MHz which is fine).
I have a medium class heatsink; not the best. It is a Cooler master V8.
I did polish the heatsink base flat. I left the CPU heat spreader alone.
I started out by using the LOWEST RAM multiplier. Then I increased the bus speed in small increments. I had to raise the voltage slightly to prevent BSOD. Ended up with 1.270 Volts; very stable, and good temps. - I didn't have to tweak anything else, but made sure that the resulting settings were within specified limits.
At a higher RAM multiplier, the RAM frequency went beyond the designed 1,600 MHz; that's why I lowered the RAM frequency such that the RAM speed was 1,452 which is within the stated 1,600 MHz frequency.
I used EVGA's ELEET as a guide when doing all this, and made sure that no setting was over the limits. Very conservative approach.