Have a limited slip 3.55 now. I do 50-50 highway/city.

I was thinking 4.10 but I want to do this once and once only. Should 4.55's be considered? Guy at the shop recommends the 4.10's considering my habits. What do you guys think ?

 

Already made up my mind. 4.10's it is.

I'll post my results.

 

You never even told us what size engine and tires you have... those are pretty crucial items when considering gears.

 

Stock size, 4.6L.

My main goal is to acquire more low end torque. 20's or 22's will be run in the future..Truck will be lowered.

 

You were right going with the 4.10s...obviously, if you're lowering it, you can't run tires big enough to justify 4.56 gears...

 

GerRod,

Are you running the 4.10's also? How do you like them? What gear brand did you go with? Problems, nuisances? Are you burning up tires?

 

4.55 is a lot of gear what size tires do you have
is it a 4x4

 

I concur with GerRod, 4.10's should do you well.

 

4.10s will be perfect. I have 4.56 with 35" tires.

 

x5 for stock-sized tires

 

Well if you add larger tires and want to keep your gearing close to the same use this formula.

Figuring gear ratio with different size tires.

Divide the old tire diameter by the new tire diameter and then multiply by the current ratio. So a stock 87 5.0 GT tire is 225/60/15 or 25.63 diameter and say we put a 255/60/15 or 27.04 on.So 25.63 divided by 27.04=.9461 then multiply by the stock 2.73 gear and get 2.588 which is definitley not a drag gear.
This is a good site for comparing tire sizes http://www.1010tires.com/TireSizeCalculator.asp .