Re geared 2005 v6 to 4.56.

[blazier196]

So I ordered a 4.56 Nitro re-gear kit from East Coast Gear Supply for a little over a thousand dollars, pulled both diffs and had a shop build them. It is definitely a difference. I am running 285/70/17 and it was not terrible with stock gears but I shattered the rear end (broke 5 teeth off ring gear) so I figured I might as well re-gear.

1: I noticed right away it pulls harder in low end power. Just letting off the brake in drive, there is a major difference.
2: It requires less power to overcome hills and does not downshift as often. I drive a 5.7 tundra every now and then and the 4runner feels more powerful in the bottom now.
3. High speeds require more Rpm's. At 65 mph I was running a little over 2,000 rpms, which is about 350 rpms higher than required before at the same speed.
4. 4low feels multiplied. I tried 4low just down the street and just tapping the gas will jerk the entire truck.

After the break in period I will hook up to my 22 foot boat and report back!


Cheers

 

[Inv4drZm]

Dang. Haven driven a 5.7 Tundra, I can't wait to do this to my V8. Someday...

 

[808DA6]

Interest has been peak. Effects on mpg?

 

[inscarguy]

at that gear set you will loose a lot of highway mph and a higher fuel consumption due to the higher RPM. if all you do is city driving and off road then you are all set.

 

[Mike07SE]

Interest has been peak. Effects on mpg?

Yeah, it goes way down! :crybaby:

 

[CruzadoBlanco]

Yeah, it goes way down! :crybaby:

just make the tires bigger, balances it out. :hiding:

looking at the rpms of doing a regear to 4.56 with my 35s would be a perfect combo, puts it ~200-250 rpm over stock at speed. 4.56s and 33's is just a tad to deep for highway use for most people. hopefully with the new tacomas having 4.30 ratios as a factory option will bring an aftermarket 4.30 front clampshell R&P for a better gearing option for everyone on 33s.

 

[RockyRider]

I'm also interested to hear the MPG report. layball:

 

[Inv4drZm]

just make the tires bigger, balances it out. :hiding:

looking at the rpms of doing a regear to 4.56 with my 35s would be a perfect combo, puts it ~200-250 rpm over stock at speed. 4.56s and 33's is just a tad to deep for highway use for most people. hopefully with the new tacomas having 4.30 ratios as a factory option will bring an aftermarket 4.30 front clampshell R&P for a better gearing option for everyone on 33s.

Would this be for the v6 or v8? Would the v8 need a smaller ratio compared to the v6 for the same results due to the differences in stock gearing and stock torque? Or would you gear them the same?

 

[CruzadoBlanco]

Would this be for the v6 or v8? Would the v8 need a smaller ratio compared to the v6 for the same results due to the differences in stock gearing and stock torque? Or would you gear them the same?

i would gear the v6 and v8 the same. the only time i would gear the v6 differently is for the pre-2005 ones that still had the 4speed carried over from the 3rd gen. 35s & 4.56s ups the rpms about 200 over stock. which is needed to help compensate for the much heavier rotating mass and increase in unsprung weight.

 

[av8ter]

Just got my front and rear Nitro 4.56s from ECGS yesterday for my 06 V6. Need to get them in before I put my 285/75/17 KM2s on.

Little bummed when I found out I have to cut/grind/deburr the new gears before install but it will be worth it.