3.23's with 2.77 low gear in my 904 transmission and a 26.6" tall tire. Works really well, plenty of power off the line and cruises nice. About 2800 rpm at 60 mph.
well I just ordered a 3.5 something for my dana 60. Should be here monday or tuesday. Allong with an eaton locker and all the needed parts to build up the housing.
Run 3.91s in my 383 dart - good street/strip combo. But 3.73s probably would have been more drivable but I just couldn't do it as that was never an available gear for my '68...comes down to personal choice.