Quote Originally Posted by kyleN20
from my limited knowlage, im thinking that Rustam is not considering this the right way, its a gear ratio, not simply a larger gear. if i was to put a 4.10 in my car it would squat harder as compared to a 3.23. i think its the revelutions of the output shaft as compared to wheels/what the diff puts to the wheels. so say you have a 2.93, that is closer to a 1 to 1 ration then with a 4.10, so the gear wouls actully be smaller in the 4.10 then the 2.93

this is all to the best of my ideas, so im not positive, but i think thats how it is
Kyle, whe most guys talk about gearing, the terms higher/deeper/larger gear normally mean a larger numerical ratio (like a 4.10:1) and shorter/shallower/smaller gear means less reduction, like a 2.83:1.

You're right, if you're talking about the pinion gear -- in a 4.10:1 diff, the pinion gear (smaller, spiral cut on the end of the pinion drive) would in fact be smaller than the pinion gear in a 3.23 rear end, but the ring gears are approximately the same size from one gear set to the next...

The point in question is not a simple one, since we're now talking about deflection forces and torque transfer issues from variations in moments (as in twisting forces about an axis) due to different radii of the pinion gears and the effect that has on the ring gear and differential casing. I'd have to do a bit of Newtonian mechanics to refresh my memory on how the forces would work out...my gut feel is actually to say that, if there is enough torque to light up the tires and the tires and suspension components haven't been changed, then different gears would not have as much affect on squat as some might think...

Cheers,
Duey