Set the vmch to 1.65v and the FSB termination voltage to 1.40v.
Then try your 360 fsb.

And I don't think you're going to get 3600 mhz stable on a B2 stepping E6600 stable at 1.3v I think that's part of the problem. Isn't the DEFAULT voltage for that chip 1.35v? You're overclocking the chip and running it at lower than default voltage....

Try 1.45vcore and then see if you can post at above 360 FSB and load windows.

How did you get it *stable* at 400 FSB before? You said that you made it boot at 400 fsb and it was stable, if it managed to boot. How'd you do this?

I'm 100% certain it wasn't stable unless you're watercooling or on subzero....