My 470 would qualify as a tractor engine compared to even a 340 with x heads but that was my choice of building a street engine that changed directions.
Because of that I'll run 4.10 with a 31 inch tall tire.
I'm gonna run 4.10s with either a 30 or 31" tire too. But I think I can keep mine under 2500, without me in it. (18x31 Hoosier QTP's for the moment.) And I definitely have a tractor motor at the moment.