Torque Converters and trannys

[bbchevy]

I have a question about torque converter stall speeds, and one about a TH350.

first off i'm a little confused about stall speeds. in the simplest way possible, can someone please describe to me what a stall speed is and what the benefit is to a higher and a lower stall speed. why do hot rodders want a higher stall speed. what would happen if i installed a 1200 or 1500 in a th350 as apposed to a 2000 or 2500?

and about the th350. i have one that looks like it was kept up well, its very clean, has an aluminum pan, and is mated to an np205... or was it a 203.(its the part time not the full time) i was wondering if there was a way to tell if it was any good before i install it. probably isnt but i figured i'd ask.

thank you guys so much in advance. im doin an engine swap this weekend so i would really appreciate the responces before.

-Scott