i am running 16/36 right now in my revo with a 3.3 and a trinity pipe strapped to a vantage 2.5 chassis with extended arms... and its still a bit low... stock gears in the 2.5 tranny with a FOC...
i can't keep the front tires on the ground so i am probably gonna try a 17 or 18 tooth clutch bell and jump to the 3.3 tranny with the wide ratio gear set for more top end speed...
this 3.3 seems to have no trouble pulling the gearing i have right now, so i got some experimenting to do myself