I had a 360, O/D 833, and 3.23 gears in my 67 Barracuda. That car FLEW on the freeway, 100 mph @ 3K rpm Spent most of my commute @ 2200 in the fast lane.
Travis..

70 GTX project, orig 440-4, 4 spd, track pack, FC7, stripper/street racer special.