Mine required 12 weeks.
If I were you, I would be up front about it with your doctor. Tell him the exact date that you quit -- but also tell him exactly how much you smoke. The reason being that as a matter of standard practice, many doctors will include an order to test for smoking during your preop bloodwork.
You'll be told that nicotine leaves your bloodstream in 48 hours, and that's true - but they don't test for nicotine. They test for the metabolite, Cotinine. You'll find various numbers on the internet about how long cotinine stays in your bloodstream (most of these manipulated by people trying to sell detox miracles that don't work), but the general consensus is that it may stay in your bloodstream for up to 12 weeks.
Most doctors are very up front and will tell you in your preop visit that if they find you've been smoking within the 8 or 12 weeks that they've instructed you to be smoke free, they will cancel your surgery. And some will refuse to reschedule. I even heard one story about a doctor who was wheeling a patient into the OR when he found out, and he ordered her out of the hospital.
Rather than chance it, I was honest and told my doctor that I would only be nicotine free for 6 weeks at the time of the surgery -- but that I had actually quit smoking two weeks prior. I let them know that my blood work would show the cotinine because I was using an electronic cigarette, with a 6 mg nicotine level, but that even when I was smoking regular cigarettes, they were lights and I only smoked about a half pack a day.
They appreciated my honesty, weighed all that information and cleared me for surgery.
If you would like to quit smoking all together, I would recommend getting an ecig. It worked for me!
On an aside, I could send you a link to a humor article that I wrote about it in my blog, but I'm afraid the language isn't very good. I was in the throes of a full on nicotine withdrawal attack at the time, and feeling fairly grumpy (as in, I wanted to kill people, ha ha). If you're interested, PM me and I'll send you the link.
Best of luck to you!