Gear ratio decision
I run a 28 inch tire (325 50 15)
A833 4 speed
With a very healthy 418 sb and w2 heads
I run the 3.55 gear ratio and it lights the tires up freely
When I was deciding on camshaft they wanted me to step up to at least 4.10 but I only do back road cruising and some city streets.
I have no complaints with my gear ratio that I chose. I get the best of all world's.
If I ever save enough cash to get the passon overdrive I would swap the gears in the rear