Ditto. 4.10's behind a 833 behind an 11-1 - solid cam, aluminum headed 360 w/a 750 carb.
255/60/15's. 3300 - 3500 Hwy. RPM for as long as it takes. Been doing it for years.
I try and keep it below 3500. No need for extra stress on the engine. I'll get there when I get there.