Maxed out: How much can a human lift?

Men's World Raw Powerlifting Records: http://www.powerliftingwatch.com/records/raw/world Women: http://www.powerliftingwatch.com/records/raw/women-world

Yours Truly: 198lbs and stronger than any woman at that weight, but weaker than record holding SHW women.

A quick little puzzle. What is the maximum weight an 80Kg man can lift using a simple pulley?

[1] http://upload.wikimedia.org/wikipedia/commons/a/a3/Polea-sim...

That entire series is positively fascinating