Tires / diff ratio advise

The tallest widest tires and the smallest rear gear, so you never have to manually shift.
Say ........... 2.94s and 28s;
65=2290 at zero slip. and
60 in first is 5450 at 5% slip, .................... assuming the tires aren't still spinning.

EDIT;
3.23s would be ~10% more
3.55 would be ~10% more over 3.23s
After this the ratios are spaced about plus 5% per swap, to 4.56s
>>You can buy/install a tool that will measure your acceleration over time, and if it knows your vehicle weight, then it can spit out a power curve. My favorite is the G-tech ProSS. You can use that curve to help you select the appropriate for you, stall and rear gear.
> If you have traction problems, IMO, gears are no big thing, cuz 2.94s will get you to 65 with no shift, but you only go thru the powerpeak one time. Whereas 4.56s would let you go thru it twice and end at 65=5600. Theoretically, the 4.56s would get you a lower ET ........ if you could figure out a way to make it hook; otherwise, at WOT, the power just goes to tiresmoke. And if you can't go WOT without tiresmoke.......... then you couldda just started with a smaller engine.
Any other rear gear between 2.94 and 4.56 SHOULD get you an inbetween ET....... if you can make it hook.
Us small block guys don't usually have this kind of problem/option,lol.This is the principal reason us small block guys can often/usually pound you BB-boys in low-speed contests, and the principal reason 318boys can pester traction-challenged 360boys.
But you know; if you have a choice between zero to 60 in 5.5 seconds with no tiresmoke, or 5.5 with nothing but tiresmoke, I would chose the latter,lol. Just make sure it goes where you point it, and that the brakes work real good if it don't..