The stock pan on GM TH350 transmissions have a recommended capacity of 4qts.

Torque converter sizes determine their capacity for fluid.

These amounts are approximate:

13"= 5 qts
12"= 4 qts
11"= 3 1\2 qts
10"= 3 qts
9"= 2 1\2 qts
8"= 2 qts
7"= 2 qts



PS: also allow adjustment for any aux. coolers you may have.