I have 33in tires with 3.55 gears and I'm looking into changing gears. I want to get a gear ratio that would be the equivalent to 3.73s with my tire size so i was wondering if that would be 4.10s or 4.56s?

 

With your truck, I say 4.10 with 33's.

 

What engine do you have? 4x4 or 2wd? And do you plan on goin with bigger tires? (Always plan on bigger tires)

 

It has the 4.6 with 4x4 and i plan on keeping the same size tires. If i where to get bigger tires I'd want a different rear end and i dont plan on doing that anytime soon

 

If it were me I wouldnt wast my time unless it was 4.56 4.10 just isnt enough of a difference to justify the hassel and expense.

 

How bad would that hurt my mpg?

 

I agree with jethat. . . But if your set on gears and always having 33's then 4.10's is prolly the way to go. . Unless you tow a lot and mostly drive around town 4.56 would be nice too. . . The itch to go taller and bigger will get you sooner than later so 4.56's would be a smarter investment prolly. . . And the 8.8 is a tough axle too, handles my 4.88s and 37's good

 

Depending on how you drive and were you do most of your driving it could actually IMPROVE your gas mileage. If most of your driving is city youll get an improvement. It will hurt some on the freeway but not as much as you might think..

 

Most of my driving is on the highway so 4.10s might be better? The 8.8 is a stout axle but the 9.75 can handle more weight so i was kinda looking into that

 

I went from 2.90's to 3.79 in my mustang.. At the same time I added an overdrive transmission. Off the line it was the best money I have ever spent on that car. Biggest bang for your buck. I have 33's and 3.55 gears in my truck and dont feel the need to regear. I have a 5.4 though. the difference between 4.1 and 4.56 is very small. I would do the 4.56 if I were going to mess with mine..

 

I did my research extensively on this subject. I have a 4x4 97 w/ the 4.6. I have 265/70/R17s so I guess that is like a 31? I don't plan on going much bigger than 33, if I do that even. So I went with 4.10s because of my future plans. And going from 3.55s I can definitely tell the difference. My MPG did go up and the truck feels completely different. It doesn't struggle as hard to get up to speed or have difficulty maintaining speed even when there is a head wind. I didn't go with 4.56s because I wouldn't make it worth it. My truck is more or less my extra vehicle right now and only gets driven during bad weather (around town), when hauling (mix driving), and hunting season (mix driving). As long as you know what route you're going to go with the truck in future I think 4.10s would help you quite a bit, without leaving you with regrets of not going to 4.56s.

 

Thanks for all of the input guys, im kinda leaning towards the 4.10s but I just have one last question. Would the 4.10 gears with 33s equal a truck with 3.73 gears and stock tires?

 

Basically yes. . . So if ur gonna spend all that money in gears 4.56s might be better , unless you just want the stock feel

 

I wanted it to be a little torquier than stock but I don't wanna hurt my mpg because it's my daily driver. Like I said I mainly do highway driving so i don't want to get to carried away.

 

In that case I would recommend the 4.10s if your sure your not goin to go up in tire size