If it's totally empty you will need between 12 and 13 qts.
6-6 quarts
A Turbo 350 transmission typically takes approximately 6-8 quarts of transmission fluid for a complete fluid change. It's important to consult the vehicle's owner's manual or a trusted mechanic for the exact quantity required for your specific vehicle model.
3 quarts 24 ounces to fill with out the tork converter Patrick
The transmission fluid capacity for a GM turbo 200 R4 transmission is 6 quarts. It should be drained and refilled at least once every two years.
Turbo 350 takes 10-11quarts of fluid, variation depends on the converter size.
12 to 14 quarts including the converter 7quarts without
Dexron II or any other transmission fluid for GM vehicles.
more then 4 quarts
A GM Turbo 350 transmission typically requires about 12 quarts of transmission fluid when completely filled, including the torque converter. However, if you are just performing a fluid change without replacing the torque converter, you may need approximately 5 to 7 quarts. Always refer to the specific vehicle's manual for the most accurate information.
Total transmission capacity is around 16 quarts.
Dexron III or Versatrans. Service fill is 3.5 quarts (transmission filter replacement)
Aprox 12-13 qts.