automartix

hey guys i have a question i have been known for having the some of the fastest automatics around but without any mods to the tranny. im comming out to ask if anyone knows of any mods for automatic transmissions. besides switching to a powerglide.....maybe a chip of some kind i have not one clue about automatic transmissions none what so ever, im an engine man thru and thru so if anyone could point me to a web site or some usefull advice...thanks..