Simply pour the fluid into the tube that you removed the dip stick from for checking the level in the transmission. DO NOT overfill the transmission.
Dexron 3
Thru dipstick tube
6
5 QTS.
Same place you check the level.
dexron II
Must be transmission fluid leak somewhere, and it's getting fluid on the exhaust. I'd be looking at the lines to the cooler first.
You should never add transmission fluid to a Chevrolet 350 engine. You can add transmission fluid to the transmission through the transmission dipstick holder.
Mercon III
Purchase an aftermarket cooler and follow the instructions included with the kit.
Answerapprox. 8 quarts (plus shipping and handling)
If it's totally empty you will need between 12 and 13 qts.