For the 744 pax with stab fuel it depends what SG you're using, an SG of 0.80 comes out to 173T if you're using 0.785 it comes out to 169T, so it depends what your company considers a standard SG for their location on the planet. (For us it's 0.785 so 744 = 169T & 744F - 160T).
The only way a -400 could have more gas than standard would be the auxilliary tanks (12,151L) in the forward cargo and only for the 744ER I believe.
