Now I have 4.56 gears.

4.56 Yukons, Love them !

3.55 yay me.

Looking at swapping out for some 4.10's! Anyone in New Brunswick do gear work?

Forgot about this one. 4.10's for me, woo hoo!

4.88's here with 35's. Power is not a problem lol.

So, what does getting a different gear ratio do? Won't you lose out on top speed by going with a higher gear ratio?

Are you really concerned about top speed in a TRUCK???

Most folks change gears to compensate for larger tires. Keeps the engine at pretty much stock RPM vs. Speed when going to larger ones.

JUST changing gears, and NOT using larger tires would put the engine at a higher RPM vs. Speed. Of course, your truck would accelerate better... but yes, you would lower theoretical top speed. In reality, top speed is more limited by the engine simply not having enough power to push your truck thru the air with its brick-like aerodynamics. :D

Hahaha a lot of people here have 4x4 pickups, I've only got 2WD so I'm going more for a race truck haha while still keeping functionality of a true pickup. So seeing as I'm keeping stock tires, what gear ratio do you recommend for me?

By stock, I mean the same dimensions

for now i just got stock 3.55, looking to eventually change it, not sure what to tho. ill figure that out when the time comes that I can afford to lift the truck and put 35s on it, gonna be a while tho, wife's pregnant, so I gotta save all the pennys that i can right now.

stock 4.10s and hate them.

wish I had 3.55s

truck tops out and needs to shift too fast. even with 35's 4.10s are too low for a diesel. gimme some 355s and I'll still light up the 35s with them :D

probably gain 3-5mpg and 20mph top speed as well