Is it possible to do it in the 700R4? Or is this something that can only be done if you have a manual transmission?

Just curious, I hear about it being done all the time to manual transmissions, I've just never heard about it being done in an automatic.

 

i've never heard of changing the gear ratios of ANY trans manual or automatic

 

Never seen one for a 700r4, but I've seen them for a th400. Something like a 2.75 to 1 ratio first gear instead of stock.