I have a 99 Mustang GT 35th limited edition with around 370HP now. I want to supercharge it. But I'm affraid it'll be too much for the auto transmission. What will that transmission handle??

 

Hey man, did a quick google search, seems as long as you can put a good valve body in it, i loved the performance automatic valve body i had in my tbird, you should handle about 500.
"The AODE/4R70W in stock form can typically handle about 25 to 50 horsepower above stock power levels. Before planning many engine mods to an AODE/4R70W equipped vehicle, you should install our AODE Valve Body Kit. Installation of the Valve Body kit will allow 1997 and earlier AODE/4R70W transmissions to perform reliably in a 350 to 375 horspower application. 1998 and later 4R70Ws can handle up to 500 horsepower with just the addition of the Valve Body kit. If your power goals are higher, you should consider having the transmission rebuilt with heavy duty components from our AODE/4R70W Performance Products Catalog"

 

370hp na good job. What have you done to it to get to 370hp?Or did you mean 270?