What 'zactly do mean by "dead short"? If there is a dead short somewhere, all you would need to do is follow the smoke to the source of the problem.
You say you charged it the battery....but then what? Would it not take a charge? Would it simply not crank fast enough to start the car? Did you charge it with the batt hooked up to the car, or were the cables off?
I would certainly disconnect the cables, and re-charge the battery first. If it sparks big-time when you re-connect the cables, THEN you know you have a short somewhere. No sparks, but slow/no crank, then you're looking at a battery problem.
The clocks in these cars are "on" all the time, so they do draw from the battery while sitting. This will drain the batt over a few days, if the batt is not up to snuff. Sometimes, the points in the clocks will hang, and have a big draw on the batt...sometimes a large enough draw to start a fire....not good!
A faulty voltage regulator and/or alternator can also cause a large drain on the battery.
My suggestion would be to take the battery out, charge it up nice, and then test it(or take it somewhere to have it tested), and then go from there.
______________
Joel Adams
C3VR Lifetime Member #56
My Link
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"