I have 29 inch tires on My bee with a 4 speed and turn just a hair less than 65 at 3000 rpm. 440 and 410 dana

The stock wheel well on 66 and 67 coronet and satellites don't accept a real big tire. I've seen 275 width the most with special offset wheels. BUT...try and fix a flat on the road with them. The wheel well on a 68 on up will accept much bigger tires/wheels.