Here is the link to the schedules for the event at Chicago

http://www.nhra.com/schedules/fullthrottleseries.aspx

I do not think you will see a night show, as it will not be dark in Chicago till a least 9.00-9.30pm that time of year.

General Admission may not get you a seat maybe standing only, this is something you may want to look into.

http://www.nhra.com/schedules/fullthrottleseries.aspx