My current belt size is 1600-8GMT. The chiller is 4" thick, so the new belt needs to be 8" longer than what I currently have (RIGHT ????). Except this is my first blower engine, and I have NO idea how to read my current belt size, or what the new one will be. Only that it'll need to be 8" longer.
You could also call Don Hampton where you got the blower. Those are nice pieces..