69 Camaro at Best of Show

[Payton King]

locker in his. Makes all sorts of noise. I would not put one in a street car.

[Cris@JCG]

Information will always vary.. Every person or car will always have different issues or opinion on which product to use..

Originally Posted by The WidowMaker

currie set my 12 bolt up with 9" ends and the U356L bearings. im thinking these are the set 20 tapered roller bearings. is that correct, and if so, any need for me to worry? are there a few different style tapered bearings?

i hate reading informational threads after ive already spent the money..........

Todd, After I posted the pic on the TrueTrac I noticed the it has a shaft that located on the out board of posit unit, but look @ the inboard towards the center of the unit.. flat surface which can create movement & transfer it to the axle bearing on housing end.. If you have a shaft that measures about 30 inches long & want it to run concentric.. It needs to be supported frim on both ends..

I am just looking & reseaching right now.. not saying that TrueTrac is problem..

Originally Posted by Vegas69

Cris, I'm not following you. From the exploded view the ture trac does have a smooth bore for the axles to slide into then the splines.

Lockers do make alot of noise.. The exploded view I posted is a Limited slip not a locker..

Originally Posted by Payton King

locker in his. Makes all sorts of noise. I would not put one in a street car.

[Matt@BOS]

Ok, someone owes Steve $20 because it is a Truetrac. Cris, do you still want Dick to give you a call today?

Now, to answer a couple questions... First, I think someone asked what offset the 18x9s are. I'm not 100 percent sure, so you would have to contact Jon at Driverzinc. but I believe they have a 5.625 backspace, at least I think that is what DSE recommends with their subframe. Someone please correct me if I'm wrong.

Josh, I did drive up to Cars and Coffee Saturday morning. If you like Porsches then you missed out. They coordinated a big meet and had their own section. There was everything from a 356 to a Carrera GT (which sounds insane) and GT3 RS. As a heads up this Thursday is the Encinitas cruise along the 101, and there is some show on Satuday in Carlsbad that I've been told I have to sign up for by the guys at the shop. Oh and the carpet is Mercedes.

Matt

[Cris@JCG]

Just got off the phone with Dick.. I will be assembling a rear end like the one you have in your car today to get Dick some info..

Originally Posted by 69MSA

Ok, someone owes Steve $20 because it is a Truetrac. Cris, do you still want Dick to give you a call today?

Now, to answer a couple questions... First, I think someone asked what offset the 18x9s are. I'm not 100 percent sure, so you would have to contact Jon at Driverzinc. but I believe they have a 5.625 backspace, at least I think that is what DSE recommends with their subframe. Someone please correct me if I'm wrong.

Josh, I did drive up to Cars and Coffee Saturday morning. If you like Porsches then you missed out. They coordinated a big meet and had their own section. There was everything from a 356 to a Carrera GT (which sounds insane) and GT3 RS. As a heads up this Thursday is the Encinitas cruise along the 101, and there is some show on Satuday in Carlsbad that I've been told I have to sign up for by the guys at the shop. Oh and the carpet is Mercedes.

Matt

[Chicken Louie]

Cris

Just to clarify but the true-trac with the gears is a better system?? The problem with the old locker and the clutches is the slippage and noise. I believe that the true-trac or auburn is a better set up than the locker for road race and if your dragging use the full spool locker?

This is great info and should be put in a new thread.

[SBDave]

I just put a Detroit TrueTrac in my Cuda, which was recommended to me over other clutch style posi units for road racing.

"TrueTrac differentials are unique in that they increase traction but do not affect steering or wear out prematurely; these problems are common with limited-slip differentials that use clutch plates and springs.
TrueTrac performs like a conventional differential, until there is a loss of traction. Only then will the power transfer occer - when it is needed."
(Just happened to have the TrueTrac owners manual on my desk.)

Cris, are you saying the splined side gear which the axles slip into in the diff has movement? It seems to me it would take a lot of movement of that gear to create such angles at the tire (since they are so far from each other, and they should be located at the ends by a bearing). Also, in the exploded view of the TrueTrac it looks to me like it does have shoulders to locate the side gear. I also just looked at a similar helical torsion diff at my work and the side gears are also located by a shoulder.

I would think the outer axle bearings and how the axles are retained would be more of a concern. Please let me know what the results are, I like this stuff!

-Dave

[DFRESH]

Geez, I just purchased a locker for mine (Detroit Locker 35 spline--not a True Trak). After doing some research--on issues like these, I was convinced it was the best way to go. I know they make some noise, but only when backing in and out of the driveway--that doesn't bother me. I didn't want to take a chance on the thing having a knock back issue with the new rear setup going in the car---many have suspected what's being played out here---will keep watching as I will be ready for axles and the bearings in the next couple of weeks. Thanks for the thread Matt.

Doug

[DFRESH]

Originally Posted by Payton King

locker in his. Makes all sorts of noise. I would not put one in a street car.

Payton, when does it make the noise? Like every corner?

Doug

[Vegas69]

Originally Posted by DFRESH

Geez, I just purchased a locker for mine (Detroit Locker 35 spline--not a True Trak). After doing some research--on issues like these, I was convinced it was the best way to go. I know they make some noise, but only when backing in and out of the driveway--that doesn't bother me. I didn't want to take a chance on the thing having a knock back issue with the new rear setup going in the car---many have suspected what's being played out here---will keep watching as I will be ready for axles and the bearings in the next couple of weeks. Thanks for the thread Matt.

Doug

Thanks for sharing...

[DFRESH]

Originally Posted by Vegas69

Thanks for sharing...

What--you've never hijacked a thread? I just looked up the definition of "Thread Hijacker" and there was a picture of you. This just begs some Greg input. Sorry Matt--will be back on track after this post.

Doug