Truetrac / Wavetrac vs Stock LSD

[White Swan]

They're all rip-offs of Quaifes anyway, aren't they?

Quaife has long been considered the international benchmark for good mass produced performance diffs.

The stock LSD in the SS Commodores is very very ordinary at best and for a long time has had a bad reputation for not being able to equalise the output to both wheels.

 

[lmoengnr]

What's the difference between the two, what do Harrop do?

Harrop machines the case from billet steel, and uses 8 pinions.
Eaton uses a cast case and 6 pinions.

 

[Forg]

Harrop machines the case from billet steel, and uses 8 pinions.
Eaton uses a cast case and 6 pinions.

Ah, so this is a complete replacement, the whole pumpkin or even disc-to-disc?
I only installed Eaton parts to mine, because I was only replacing the gearset itself - the case & bearings are stock (not a Commodore) ... kinda wished I hadn't had that part delivered to work & then had to carry home on the train ... I guess the Harrop for the SSVR would be worse though.

 

[lmoengnr]

Ah, so this is a complete replacement, the whole pumpkin or even disc-to-disc?

Just the differential it self.

 

[Forg]

OK, now I'm even more officially confused than before!

Do Harrop call it a Harrop Eaton Tru Trac because the design itself is license/owned by Eaton, but Harrop makes a sturdier version of it?

 

[lmoengnr]

OK, now I'm even more officially confused than before!

Do Harrop call it a Harrop Eaton Tru Trac because the design itself is license/owned by Eaton, but Harrop makes a sturdier version of it?

Yes!

 

[arthurk]

OK, now I'm even more officially confused than before!

Do Harrop call it a Harrop Eaton Tru Trac because the design itself is license/owned by Eaton, but Harrop makes a sturdier version of it?

Harrop has a version based off the original Eaton truetrac

 

[arthurk]

Quaife has long been considered the international benchmark for good mass produced performance diffs.

The stock LSD in the SS Commodores is very very ordinary at best and for a long time has had a bad reputation for not being able to equalise the output to both wheels.

I have looked at Quaife as well but I could not find a unit for the VF, more to the point couldnt find a GM/Chev/Holden unit.

 

[SnowDoggyDogg]

In my mind if you are going to fork out for aftermarket parts and the labour to install it makes sense to buy things that are not going to be the bottleneck down the road.

So an eaton trutrac at 500rwhp could become the weak link in your driveline pretty quickly on a 6l or 6.2l LS engine.

This is why the Harrop, albeit dearer, doesn't leave you having to upgrade again if/when you want more power.

 

[arthurk]

In my mind if you are going to fork out for aftermarket parts and the labour to install it makes sense to buy things that are not going to be the bottleneck down the road.

So an eaton trutrac at 500rwhp could become the weak link in your driveline pretty quickly on a 6l or 6.2l LS engine.

This is why the Harrop, albeit dearer, doesn't leave you having to upgrade again if/when you want more power.

My car is already at 422rwkw so if I do go truetrac it will be the Harrop version.