To find the GVWR for *your specific* 2008 Ford E-350, you need to check one of the following:
* The sticker on the driver's side doorjamb: This sticker lists important weight information, including the GVWR.
* The owner's manual: This manual will also specify the GVWR for your particular vehicle.
* The vehicle's title or registration: Sometimes, this documentation includes the GVWR.
Without knowing the specific configuration of your 2008 Ford E-350, I cannot provide the GVWR.