i dont know how the gear ratio works i have built a 350 v8 about 280/300 hp im pushing a trophy 1986 2160 dropped in this v8 with 1;89 gears because we boat at 6000 ft i have a 15/19 prop on it now but i have to go up to a 21p my hp is incredible im topping out at 5000 rpm 36mph and i still have...