Diff upgrade

[01 vx berlina]

Hi ik this has probably been asked before but I'm looking to upgrade from a 3.08 diff to domething with more go. I'm running 245x35xr19 wheels. And an auto box. It's not a daily but also not a race car. I can't decide weather to go 3.45 or 3.7 can anyone share some insight?

 

[vr304]

I’d go for 3.7 if it were mine

 

[Ginger Beer]

If your in Sydney I have a 3:9 ring and pinion you can have for a 1.0L bottle of JD

I went from 3.9 to 3.46 because boosted

 

[gtrboyy]

If he doesn't want them I'd be interested in the gears for my crappy m6 vy sv8

 

[lowandslow]

Just went from 3.08 to 3.73 with a truetrac behind a 4 speed LS1. One of the best mods imo.

 

[01 vx berlina]

If your in Sydney I have a 3:9 ring and pinion you can have for a 1.0L bottle of JD

I went from 3.9 to 3.46 because boosted

View attachment 232855View attachment 232856

Recon I might go 3.7

 

[01 vx berlina]

Just went from 3.08 to 3.73 with a truetrac behind a 4 speed LS1. One of the best mods imo.

What is a truetrac and how does it work

 

[Immortality]

What is a truetrac and how does it work

Type that into the google machine

 

[lowandslow]

What is a truetrac and how does it work

Helical gear driven LSD center. Acts like a normal open diff under normal driving conditions but will transfer power to a slipping/spinning wheel when it happens almost instantly.

 

[Jezza]

I'm planning on upgrading my diff in my Statesman soon and its got a 3.07 (V8 diff) and im planning on 3.73(V8 ratio) as 3.45 is such a small upgrade from 3.07/08 it's not worth it but 3.73 is and the difference in RPM is very little. I've heard Truetrac puts down the power a lot better and is far more predictable compared to the standard Holden LSD's which car apparently have a mind of their own at times, only downside to the Truetrac is the cost.