4th gen 4runner 4.56 or 4.88?

[TEPUI]

Been away from ih8mud for a long time. Good to be back.

I own a 2007 4runner, with OME suspension and 285/75R16 tires. I'd like to reduce fuel consumption and regain the agility and acceleration it had when it was stock.

In your experience, should I go with 4.56 or 4.88?

 

[Senor Aguas]

I'd say 4.88 but my experience comes from an 80 with 34 inch tires.

 

[daPitbull]

V8 = 4.56
v6 = 4.88

 

[lehiguy]

Can you even get 4.88 gears for these things? I thought 4.56 was it. Mathematically, 4.10s would put you slightly lower with the 285s than you were with 265s and 3.70 gears. That's what I did, pulled a front diff from an '05 or newer Tacoma 4-cylinder truck, same stuff, 4.10 gears. I am happy with it.

EDIT; You can get 4.56 and 4.88 for the front diff, the rear is a Toyota 8", which can be had in any ratio for dirt cheap.

 

[LINUS]

Depends on what tire size you plan to run. Larger the tire, the lower the gears. Figure out the tire size 1st, then that would tell you which ratio would work best for you. Personally, with gears I'd sooner go too low than not go low enough - if 4.11 is factory, 4.56 would hardly feel like it changed & would feel like a waste of money. If 4.11 is factory, I'd do 4.88's

 

[ToyotaTrailTeam]

Had a 2003 with the V8 and 35's. I went 4.88 and loved it. You wont notice any change with the 4.56!

 

[lehiguy]

I have the same size tire you do. The math is this; 4.10 gears will be slightly lower than the stock tires and 3.73 gears, 4.56 and 4.88 lower still. I think 4.88 is overkill, 4.10 works well for me, 4.56 would too. The height required to use the 285/75s is what kills you. Aerodynamically, your original fuel mileage is gone for good. Nitro gear makes gear sets for the stock 8" front carrier in these rigs. Other options have required the swapping out of the front carrier.

 

[lehiguy]

Had a 2003 with the V8 and 35's. I went 4.88 and loved it. You wont notice any change with the 4.56!

That's 35" tires, he has 33" tires.

 

[Letsgomoreplaces]

2007-2009 Toyota FJ Cruiser, 2003-2009 4Runner/Prado 120, 2005 & Up Hilux
All Nitro 4.10 4.56 & 4.88 font gearsets are now "thick" to fit OEM 3.73 carrier or ARB RD121.



07-09 FJ Cruiser, 03-09 4runner & GX470, Prado 120, Fortuner

4.10 Without OEM Locker

4.10 WITH OEM Locker

4.56 Without OEM Locker

4.56 WITH OEM Locker

4.88 Without OEM Locker

4.88 WITH OEM Locker



ARB RD132 Rear Locker 09 & older Rear





ARB RD121 Front Air locker (use with stock AT FJ, or all with Nitro gears)



Chromoly rear axles



We have also seen a lot of failures on 09 & older FJ cruisers and offer this upgraded rearend package click here





2010+ FJ Cruiser, 4Runner, Prado 150, GX460

4.56 Without OEM Locker

4.56 WITH OEM Locker

4.88 Without OEM Locker

4.88 WITH OEM Locker



ARB RD121 Front Air locker (use with stock AT FJ, or all with Nitro gears)

ARBRD193 Rear Locker 2010+ 8.2 rear





Chromoly rear axles



If you've fitted larger tires to your vehicle than you are likely experiencing a loss in performance, fuel economy, and more constant transmission gear "hunting" - This is because the larger tires reduce your engine's RPMs below the optimal power band. Re-gearing the differentials in your vehicle is the only way to get your vehicle back into its optimal operating RPM range, thus improving performance and reducing strain on your vehicle's drivetrain. This is especially important for today's vehicles as they feature tall factory gearing and overdrive transmissions which are less tolerant to increase in tire size or the weight of added accessories. It's a common misconception that gear changes are reserved only to hardcore off-roaders or trucks with huge tires. However, re-gearing is one of the single most beneficial modifications you can make to keep the performance, economy, and durability of your daily-driven 4x4. This is a mod for anyone with larger tires, increased weight, or for increased performance on stock vehicles for towing or increased acceleration.