LSD or Truetrac for diff 3.9 gears. Advise please.

[CAPRILICIOUS WL]

3.9 diff gears n LSD go in on Tuesday can't Wait.

This is for a 5 speed auto Wl caprice v6 upgrading from the stock 2.87 gears.

But I'd like to know, would you recommend going truetrac over a 4pin LSD for an extra $250?

Tell me more about truetrac.

Please advise me on what I should request to make sure I get the best out of the diff rebuild.

Any advise relating to diffs, LSD, truetrac, etc... please reply below

Cheers
Dave.

[GRPABT1]

For $250 I would go they Tru trac. Wish they were that cheap for my VN.

[CAPRILICIOUS WL]

For $250 I would go they Tru trac. Wish they were that cheap for my VN.

An additional $250, so $550 for LSD or bout $800 for truetrac.

[CAPRILICIOUS WL]

Anyone else peoples?
It's going in tmrw

[jakstas]

I have a trutrac. Are you getting the Harrop version, or the Eaton version? Not that its going to matter, but the eaton version is rated to a lesser power figure than the Aussie Harrop verrsion.

[CAPRILICIOUS WL]

I have a trutrac. Are you getting the Harrop version, or the Eaton version? Not that its going to matter, but the eaton version is rated to a lesser power figure than the Aussie Harrop verrsion.

I can get my hands on the eaton version.
I'm not going to be abusing it like doing burnouts or anything like that.
I just want a Better longer lasting setup so was wondering if truetrac is the way to go or will I be fine with an LSD?

Cheers

[DevilDRake]

I just got LSD

[CAPRILICIOUS WL]

I just got LSD

How is it so far?
What gears did u get again?
Would you change to Different gears now that uv tried these?

[DevilDRake]

LSD, 3.7's and it goes pretty damn good haha.

That being said, i wouldn't mind higher, but this will suit the cam i'm putting in. Don't expect massive gains from it, but you can definitely notice.

But it revs at 2100RPM @ 100KPH (but then again you have a 5 speed, mines 4).

[CAPRILICIOUS WL]

LSD, 3.7's and it goes pretty damn good haha.

That being said, i wouldn't mind higher, but this will suit the cam i'm putting in. Don't expect massive gains from it, but you can definitely notice.

But it revs at 2100RPM @ 100KPH (but then again you have a 5 speed, mines 4).

That's great to hear, I hope mine goes all smooth tmrw.

2100rpms is great at 100, I calculated mine and I got 2700 so I hope that's not correct.

I have 2.87 atm and @ 100km/h I'm sitting on 1750rpms.

Did you put brand new gears in yours?

[CAPRILICIOUS WL]

So dropped of the car this morning.
Brand new GM 3:9 M80 gears with a LSD & full rebuild.

Iv read that you can tighten the LSD or something along those lines, what does this mean.

What are the advantages and disadvantages of having it tight?

[Trayner]

So dropped of the car this morning.
Brand new GM 3:9 M80 gears with a LSD & full rebuild.

Iv read that you can tighten the LSD or something along those lines, what does this mean.

What are the advantages and disadvantages of having it tight?

Over time LSD's arn't as "tight" as they were when first fitted so they get a bit sloppy and sometimes both wheels don't spin etc , re tightening pretty much means fixing it

[Jecs]

ive got a LSD. lasted a year before she said no more loops.

id go trutrac. but then again for the amount of money id rather just get a spool

least i know i wont break it... ill just break everything else haha

[CAPRILICIOUS WL]

ive got a LSD. lasted a year before she said no more loops.

id go trutrac. but then again for the amount of money id rather just get a spool

least i know i wont break it... ill just break everything else haha

I thought I'd go with the LSD this time n try my luck, I don't burn rubber or any of that sort so was told I should be good with an LSD.

Does it wear out with just normal driving thou?

[jakstas]

Your LSD will be fine mate. Im punching well over 1400nm of torque through my Trutrac. By the sounds of it, your LSD is the perfect choice for your car, and driving style! Enjoy it, and report back on it in a month or so!

[CAPRILICIOUS WL]

Your LSD will be fine mate. Im punching well over 1400nm of torque through my Trutrac. By the sounds of it, your LSD is the perfect choice for your car, and driving style! Enjoy it, and report back on it in a month or so!

Pheww...Words of comfort is always the best lol
Shall do.

[DevilDRake]

I thought I'd go with the LSD this time n try my luck, I don't burn rubber or any of that sort so was told I should be good with an LSD.

Does it wear out with just normal driving thou?

If your diff isn't chattering around corners right now when it heats up (does it for a while while it's new), it isn't tightened with extra shims put in like mine was.


Normal driving it wont, it wears from cornering hard as it pushes the cups away from eachother and keeps forcing them, so overtime will deteriorate.

Basically, sliding = no Damage, fast cornering = damage lol.

Also if you spin the wheels and only 1 wheel spins, let off and start again (like if you're doing a skidpan or being a dick etc) as reving more may start the 2nd one up, but still pushes the cups and forces it until the other wheel spins.

[CAPRILICIOUS WL]

If your diff isn't chattering around corners right now when it heats up (does it for a while while it's new), it isn't tightened with extra shims put in like mine was.


Normal driving it wont, it wears from cornering hard as it pushes the cups away from eachother and keeps forcing them, so overtime will deteriorate.

Basically, sliding = no Damage, fast cornering = damage lol.

Also if you spin the wheels and only 1 wheel spins, let off and start again (like if you're doing a skidpan or being a dick etc) as reving more may start the 2nd one up, but still pushes the cups and forces it until the other wheel spins.

Hmm can't wait to see what it feels like when I go for the test drive tmrw.

But there is certainly non of this sliding, burnouts or hard cornering. Lol

[DevilDRake]

Lol fair enough, but even if u take off fast and only one wheel chirps etc. I love stalling it up and it goes a little sideways on take off. That being said, it's gotta be somewhere no-one is when u test it otherwise you can flick out and hit the car next to you :0