I have a new Auburn unit in the car (complete 3rd member from Manciniracing) that's already starting to make noises going around corners. Less than 2k miles.

It's in an 8 3/4 with 3.55 gears and I'm pushing 600 horsepower with ET Street Pro's.

I'm not a fan of the Detroit locker because of the noises it makes in a friend's 9 inch.

I've thought about a spool but not excited about corners on the street with one.

Is the truetrac okay for this level of horsepower and sticky tires?

I've started gathering Dana 60 parts and may just upgrade the whole rear.

You want it all and the cake too? You can't have it. They make lockers that aren't as noises around corners.

You need a locker or a spool.

I have a S60 with locker , don't even know its there

Tex

Love my spool for many years..........

No Eaton true trac in an 83/4 they are JUNK !! the axle side gears move all around & dont support the axle end & makes all kinds of noise when slowing down. I have so much time & money in this crappy 8 3/4 NEVER AGAIN,,, Dana 60 is the only way to go.

check this link link to true junk

What about some sort of air locker like that use for offroad setups. ??

I have a spool, I was really worried about it before I put it in. But once I got it in the car it's really zero issue.

3.55 gear with 275 drag radials.

This drive around video shows the car turning around a tight corner (7min mark). No binding , no sqeeling, no problems.

https://youtu.be/vqJoG_2wdMQ

Just respect the car in the corners before you're on the throttle hard and you won't even notice.

Keep an eye when in wet weather conditions with a spool. Get good axles and bearings along with good seals.
Also, the best man for the job with which ever way you go is no other than Dr. Diff.

I am running a borrowed 9 in. center section since I broke mine and it has 4.56 gears with welded spider gears (Poor mans spool). It works great and does not make any noise when street driving.

I have 3.54 Dana gears, housing ends to weld on in place of the full floaters and a truck housing. Looks like I need to ring Dr. Diff and get axles, bearings and a spool...

I have been running Detroit Locker for over 5 years and I love it. Most of the time I dont even know its in there. Ron

Another Detroit here, can't say I've heard it making much noise on corners, it's way more friendly than the spool I had in it before.

Spool here, no issues in the six years I've had it.

With my old 8.75, the Auburn sg didn't hold up; the clutch-type sg was the better option.

When I ordered my Strange S-60 from Doctor Diff, we discussed both the Detroit locker and Strange's S-Trac. I ended up going with the S-Trac. Strange has a video on YouTube that goes into the details of the S-Trac that I found helpful, too.

Ditto on this. The key to the Locker is knowing what RPM to shift during street driving, turns etc. Once you find what it likes, you wont notice it.

a "lincoln locker".

I have had a spool in my car for a long time. I had an auburn unit at one time that didn't last long at all so the spool was the next most reliable choice when I moved to 35 spline axles. My Jeep has a locker in it and while its better than a spool it is still a spool anytime your under throttle. It still chirps and barks the tires around corners and it can swap ends on you in the rain if your not careful when it goes from "open" to locked around a corner. The spool is really only annoying in parking lots and spaces that require tight turning, out on the road its a non issue.

I've had a spool in my cuda for about 15 years, street and strip, no problems ever. Dry pavement, wet pavemet, doesn't matter. The issues some people blame on a spool ends up being from the tires they were running.

Auburn type units are garbage, but you know that .

A true trac COULD hold up to that power but you need to disassemble it when you get it and make sure it's put together properly, the one I put in a friends 8.8 was not and ate itself up in less than 15k miles with maybe 100 passes.

He ended up going with a Yukon Grizzly locker that I changed the springs to lighter ones to make it more street friendly. The last time I was in it you could barely hear it making the clicking that it does when going around a corner.

He isn't making the HP you are, '12 V6 mustang with a 50HP shot that runs in a 12.50 index class with slicks and a manual trans.

"Auburn type units are garbage, but you know that"

I unfortunately have come to that conclusion, AFTER I bought a new Auburn, my question, is there any low enough hp application that an Auburn will survive, like a healthy slant six?