I'm rebuilding a turbocharged engine for my 240. I've got the engine torn down but I have one little problem. I need to how to set up the timing chain. The engine will be putting out (at max) 17 or 18 pounds of boost. I will more than likly keep it at 15. I rebuilt the engine in my 78 and advanced the timing (n/a). Can I do that on a turbocharged engine or should I leave the timing normal. If you need some more info please post me a message. Thanks for the help.