Whatever it is, it sounds like it's gonna cost money I don't have to fix. Actually I'm trying to sell it anyway, and I'd rather not fix it. I bought the car the way it is and I just thought maybe it was the cam or something making the noise after I started going but I guess that wouldn't be my luck I've been driving it for about 3 months now with no problems, but I guess it's just a matter of time. I don't even have any grinding synchros. Shifts fine, just sort of noisy when in neutral and makes noise after I start going. It doesn't always do it at the same rpm. This sux.