Gears & Axles - Eaton Posi OR Truetrac Limited Slip

I am getting a moser 12-bolt and i called Moser and they told me truetrac was better than eaton posi. then the place where i ordered it from told me that the truetrac is noiser than the eaton posi. does anyone know if any of this is true.

I'm very happy with my Eaton....a few of my buddies run it runnng 9s and 10s with no issues.

I have sold dozens of Moser rear-ends with the Truetrak, and we also install quite a few of them. I have not noticed them being any noisier at all. My own Moser 12 bolt has the eaton in it, as I installed it nearly four years ago, back before Moser offered the 12 bolts with a Truetrak. If I had a choice, I would of gone with the Truetrak. Bob

Yeah, everyone seems to be liking the truetrac - as long as its durable for drag racing, I'd have no problem going with it.

I've been running an Eaton in my 12 bolt for 3 seasons now, and its working fine. Only negative is it clunks on tight turns (and I tried 1, then 2 tubes of the posi additive with no effect). As long as it doesn't do the one wheel peel at the track I don't care. It is rebuildable when the clutches wear out. But I probably will switch to the True Trac when it wears out if the good reviews keep pouring in.

I believe the Eaton uses cone clutches which = no rebuild when worn out.
Where as the trutrac has clutch plates and is rebuildable

Thanks for the info guys. I should be getting my Moser 12-bolt soon it is gioing to be a trutrac with 30 spline and 4.11. I will see how it goes.

I believe the Eaton uses cone clutches which = no rebuild when worn out.
Where as the trutrac has clutch plates and is rebuildable

Got things a bit confused there, Eaton has clutch plates and is rebuildable, Auburn std. series had cone clutches, and the TrueTrac is NO clutch plates just 2 worm gears like a torsen diff

Trutrak here and it is not noisy at all. I'm glad I got it instead of a locker.

I believe the Eaton uses cone clutches which = no rebuild when worn out.
Where as the trutrac has clutch plates and is rebuildable


this is incorrect the eaton can be rebuilt. you get your choice of 400#, 600# or 800# springs. a auburn posi cannot be rebuilt. not sure about a true trac though

tru-trac here, the noise I get are from the richmond gears.

TrueTrac here and I'm very happy with it. Doesn't make any noise at all.

I think 12 bolt trutracs have 3 pinions per side not 2 .