Best diff ratio for Km132 gearbox

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L200W3RK5
Posts: 55
Joined: Sun Oct 23, 2011 10:24 am
Location: Arsehole of Australia (Radelaide)

Best diff ratio for Km132 gearbox

Post by L200W3RK5 »

Hi guys, been a while...
Hence the title, id like some opinions what what final drive ratios u guys and gals run or recommend for the KM132
Im getting my diff in the ute shimmed soon with the other LSD carrier i have lying around but dunno which ratio to put in

im running 4.75 LSD or sumthin stupid out of a pajero and altho its fun, it screams on the highway and ive had enough
Be aware its the 10bolt/ scorpion diff housing, im still keen to hear what u have regardless of diff type

i have a 3.47 that came out of my old D50 im swaying towards
atm its still the sohc 4g63, but not for long

**Also, im ASSUMING its a KM132, its a jap box but has no markings on the left where its supposed to have them.....

Cheers for any input and sorry if this topic has been thrashed :blah:
How can you not love the taste of blood and diff oil?
Scorpma82
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Location: melbourne

Re: Best diff ratio for Km132 gearbox

Post by Scorpma82 »

For a street car......i wouldn't go any higher than a 3.7:1 ratio

I personally dont like my cars to rev past 2500rpm on the freeway
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IncorpoRatedX
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Joined: Wed Jan 25, 2012 2:35 pm

Re: Best diff ratio for Km132 gearbox

Post by IncorpoRatedX »

I run the 3.89 in my wagon with the KM132

Turn's better rpm at 80 mile per hour than my Galant VR4 does.
1973 Galant Wagon, 4G63 Turbo | Coil overs | Flares | Work wheels | Follow me on instagram @incoporatedx
A112H
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Joined: Tue Mar 24, 2009 5:01 am

Re: Best diff ratio for Km132 gearbox

Post by A112H »

Not sure what my box is called (Triton 5 speed??) but I am running 3.89 diff and it is like 3500 at 110kph. I am swapping to 3.3 in the week but ideally would like 3.2 or even 2.8
It is not a race car and I would love 2500 at 110kph
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