Five Oh Brian
Mustang Guru
Another thing to note about these automatics, is when paired with the right converter, traction, they all seam to run pretty damn good, and a gear change can probably make the car feel alot different, but if tuned properly, you probably won't see much difference at the track imo. There's people that think that so and so's geared too low, and so, and so went faster with factory gears. I really think Five Oh Brian should swap in some factory 3.15's or 3.31s, make some hits at his local track, run the same number and put this to rest, hahaha!
My original 3.15's are in a box in my garage. I believe they are gonna stay in that box forever - LOL.
As many have said, these Coyote / 6R80's run well with just about any of the common gear ratios, so I'm staying with the gears that "feel" the most entertaining for daily driving duties (which is 95% of my car's use). 4.10's are staying in my car!
I still believe a 28" tall tire is better than a 26" tall tire at the track. Even if the OP is not having traction problems yet, a few more mods and/or better DA will change that in a hurry.