Diff gear ratio !?!

fj1613 · 04-13-2008, 02:08 PM

Hi

please, I want to know the original differential gear ratio of the Fj cruiser ??

And if their is any other lower gear ratios for it ?

Stinkyfinger · 04-13-2008, 02:10 PM

The manual has 3.93
The auto has 3.91
Right now you can buy 4.10, 4.56 and 4.88 but their not cheap

Fjamming · 04-13-2008, 02:14 PM

edit. posted above already.

**DEWFPO** · 04-13-2008, 02:17 PM

Quote:

Stinkyfinger previously said:

The manual has 3.93
The auto has 3.91
Right now you can buy 4.10, 4.56 and 4.88 but their not cheap

The RAR for the 5AT is 3.73:1, The 6MT is 3.91:1

DEWFPO

**FJDave** · 04-13-2008, 02:41 PM

Is the 2WD and 4WD rear gear set the same ratio?

IMHO, going from3.91 to 4.10 is gonna be a very short step. Ideally, wouldn't you want to step up to the 4.56 at minimum to get a noticeable difference?

FJCamel · 04-13-2008, 05:43 PM

Quote:

DEWFPO previously said:

The RAR for the 5AT is 3.73:1, The 6MT is 3.91:1

DEWFPO

x2, 3.73 not 3.91.

**DEWFPO** · 04-13-2008, 06:25 PM

Quote:

FJDave previously said:

Is the 2WD and 4WD rear gear set the same ratio?

Yes it is. (The 2WD is only available with the 5AT).

DEWFPO

fj1613 · 04-14-2008, 08:38 AM

ok I have 5At x2 = so it's ratio is 3.73:1.

and to get a higher RpM, I should increase or decrease the ratio ??

**DEWFPO** · 04-14-2008, 09:08 AM

Quote:

fj1613 previously said:

ok I have 5At x2 = so it's ratio is 3.73:1.

and to get a higher RpM, I should increase or decrease the ratio ??

To get more rpm at the same mph you would increase the ratio to something like a 4.56:1 (from 3.73:1).

DEWFPO

fj1613 · 04-20-2008, 01:16 PM

aha, ok

and what is the difference of the top speeds at ratio 4.10 ? and where can I find these gear ratios ?