4720 lbs is factory curb weight, plus I have added weight, not reduced weight in my truck (stereo, etc). I have never gotten my truck weighed. This article has the curb weight, but I have GM specs with the same number.
http://www.sportmachines.com/magrack/automobile_magazine_2-91.html
Easy there Mr Fbucket. you can only call it a “pig block” if you have something faster, or your screen name is Pewter.