Lower ratio gets better mileage; 430 is better.
For towing, yes. For fuel mileage, no.
10 bolt or 12 bolt has NOTHING to do with gas mileage. It is the gear ratio that is inside of the rear end housing that affects the mileage. The lower the gear the lower the fuel mileage is. The higher the gear, better the fuel mileage is.
NO. It has nothing to do with the MPG of gas. But the ring and pinion gear ratio does.
In some 1982 Ford f100 trucks I know they have a 4.10 Gear ratio like my truck but with that gear ratio if you go over 55 mph you can say goodbye to your gas mileage so get a smaller gear ratio.
That all depends on what you want to do with the car, if you want more power you need to go to a lower gear ratio and if you want better gas mileage you need to go to a higher gear ratio.
A higher rear end gear ratio (numerically lower, such as 3.08:1) generally provides better fuel mileage, particularly at highway speeds, because the engine operates at lower RPMs. Conversely, a lower rear end gear ratio (numerically higher, such as 4.10:1) can improve acceleration but may lead to higher RPMs and reduced fuel efficiency. Ultimately, the ideal ratio depends on the vehicle's intended use and driving conditions.
The answer depends on the gear ratio of the vehicle in question.One vehicle may get better gas mileage in 3rd gear, while another may do better in 4th.Generally speaking a lower RPM measurement while driving will yield greater efficiency, and will therefore be more economical.This means that it would be typical to get better gas mileage in 4th gear because the engine would have to be operating at a higher RPM to do the same thing in 3rd gear.
It could, or it could make it worse. There are a lot of factors in gear ratio selection.
Yes it is but you will lose by the increase in gas mileage.
It depends on what you need - if you want lots of speed no power on the bottom end you go with the high ratio - if you want lots of torque on take off and lots of pulling power you take the low gear ratio.
Depends on where you run. If you run Texas exclusively, you'll get better MPGs with shorter rear end gears, such as 3.25s or 3.36s. But you won't get better fuel mileage with such short rears in the mountains.
Depends on gear ratio but you can expect 15MPG or less