SlowJim
forum member
Plus I don't want to rev higher than 7kish when I do track days. This is still my daily driver, powertrain warranty intact, don't want to add an oil cooler, etc.
Plus I don't want to rev higher than 7kish when I do track days. This is still my daily driver, powertrain warranty intact, don't want to add an oil cooler, etc.
Did the non-Laguna Seca get the Torsen as well? I'm kind of guessing that track time for most folks with the Boss/LS involved corners and whole minutes at a time.Does the Eaton really have that large of a durability advantage over the Torsen? I honestly haven't heard a large number of Boss owners with grenaded diffs.
The 2.7 to 1 - Stock Boss 302 - is exceedingly strong.
The 4.0 to 1 is not nearly as strong.
Both are quite a bit more expensive than the true track.
I could guess as to why but it would just be speculation.
The tru trac has a 3.5:1 bias ratio, which is ample. Roush used it on the their track pack cars around 2007-2008. Roush also used the tru-trac on their 700 hp cars they had at sema.
Eaton makes two versions of their tru-trac, the 31 spline version and also the beefier 33 spline version.
The standard 31 spline version that most have seen use 3 pinion helical gears on each side. The 33 spline version uses 4 pinion helical gears on each side, and is built a lot stronger.
VMP sells both versions. http://vmptuning.com/index.php?p=ca...arch_str=eaton+tru+trac+differential&x=63&y=5
The 33 spline version is $629.99 vs $479.00 for the 31 spline version.
The 33 spine version is a bargain vs the torsen... albeit you require new 33 spline axles.
Add a Bob's auto sports catch can and /or a differential cooler, and that's about as good as it gets. http://www.revanracing.com/products/bobs-auto-sports-axle-reservoir.html
I use my 2010 with the 3 pinion tru-trac all year round, and it works good in the rain. The tru trac + WL watts link were installed on
the same day. It would take a lot to bust a standard tru trac. The beefier 4 pinion version is virtually indestructible. if you really wanted to go crazy, you could weld the axle tubes and /or install an axle brace.
I use my 2010 with the 3 pinion tru-trac all year round, and it works good in the rain. The tru trac + WL watts link were installed on the same day.
Thanks for that feedback. Good to know I have a couple of good options.
Autox season update... FSB was making noise again so I tightened it all up as much as I could but couldn't get a torque wrench in there, and the small nut you have to hold as you tighten the main nut is pretty much stripped.