Lots of variation here. The advertised dry weight for the '86 GT was 2696 lbs. 2800 is probably an average operating weight. 45% is on the front tires and 55% on the rear. You can get more specific with the engine and transmission if you need to, or visit your local truck scale.
edit: Most scales are able to weigh front and back separately.
[This message has been edited by Gall757 (edited 12-03-2013).]