440 Automatic. What gears are you running?

I’ve got a mild 440, 727, Dana 60 w/3:73 gears 255/60-15’s in a 71 Duster, loads of fun on the street! Haven’t done a lot of freeway driving and as I recall was around 3300 @65mph. (Don’t quote me on that, my memory ain’t what it used to be.) Not too terribly obnoxious.
I dig em so far. Calculator says closer to 3000 @ 65. That probably is more accurate.