[7000rpmisheaven]

It is all about detonation. As long as you don't have detonation then you are ok. Stock foxes run about 10 degrees. with good gas most people would say you can get 12-14 degrees. Get a timing light. Advance your timing. when you start to get detonation back it down 1 or 2 degrees. If you plan on racing or going to the track dump in some octane booster, take out your timing light and see what you can get. Its one of those tricks to do on race day like let a little air out of the back tires. It won't give alot but sometimes every little bit helps.