5 Speed Gear ratio advice?

I agree those splits are pretty nice for a 340....67-.73-.77-.69od. Very nice progression.
I am somewhat surprised tho that you're not complaining about the lack of starter gear, or the fuel mileage at 65=1900rpm,lol. I'm guessing if NA that you're running a fairly stout cam,and or some mean heads,lol. With just an 8.59 starter, I'd have to guess heads?
your pretty close,,,It starts real nice,,
340 +.030, 10.1 cr, flat tops zero deck, .039 quench, roller 222/226 @ .050, .550"/.548" with 1.6 rockers, Eddl RPM's closed chamber, Air Gap and FiTech,,, 21.59 MPG cruising with one dig with a Jeep GC SRT8,,,I'm satisfied but looking for more of course.!!!