Just bought a 8 3/4 have a few questions?

Just bought a complete 8 3/4 rearend for my 71 duster. I just picked it and a drive shaft with a few random mopar parts up for $200. The guys told me it wasn't a posi track rear end. But when i got home and spun the axle both sides turn the same directions. And the carrier says it's a 489. But my main question is whats the gearing? I spin the axle 1 complete turn and the yoke on the carrier spins 3 1/4 turns. What would this make it?