All it takes is a little arithmetic.
Deck height - half the stroke - rod length = compression height at zero deck.
8.2" - (3.25" ÷ 2) - 5.7" = CH
8.2 - 1.625 - 5.7 = 0.875" of space for the ring pack between the pin center and quench pad. In other words, not going to happen. 5.485" is the realistic maximum rod length for a 331 if using a 1.090" CH piston meant for a 347.
Why do you want to use such a long rod? The 3.25" stroke and a 5.4" rod still nets a decent 1.66 rod:stroke ratio.
No one said anything about rod length affecting displacement.
331 stroker kits use a 3.25" stroke crank and
5.4" rods. He wants to know if he can use a 5.7" rod instead.