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  #1 (permalink)  
Old 08-09-2005, 06:35 PM
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Detroit Truetrac

Are they any good?

I am considering one for the 10 bolt in my Camaro.

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Old 08-10-2005, 06:59 PM
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It is just about the same (same principal at least) as the Torsen that was used in LS1 f-bodies. At one time you could get pull-out Torsens for about $100 from SLP but the supply (just like the f-body) has dried up.

I think it is the perfect diff for the street because for the most part you won't notice it other then not spinning a tire. It will cause a bit more oversteer (less understeer) coming out of a turn because more torque will be going to the outside tire (because it has more traction). It shouldn't be enough to notice. TracTech is a good company that has been around for a long time. I think the TrueTrac is one of the best diffs for the money.
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Old 08-11-2005, 04:14 PM
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Any detroit locker is a good one. They make real strong lockers and posi's. The truetrac as I hope you know is a limited slip diff.
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Old 08-12-2005, 09:59 PM
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I am either going to go with Truetrac or a Powertrax No-Slip. I haven't completely decided yet. It is going to be for my '73 Camaro. Right now without any mods my Camaro handles very well. I want it to continue to corner well. Traction is paramount, but cornering is close behind.
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Old 08-13-2005, 01:01 AM
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Quote:
Originally Posted by lluciano77
I am either going to go with Truetrac or a Powertrax No-Slip. I haven't completely decided yet. It is going to be for my '73 Camaro. Right now without any mods my Camaro handles very well. I want it to continue to corner well. Traction is paramount, but cornering is close behind.
IMO If you want it to corner well you don't want a locker (like that no-slip).
I think I would rather have a spool then a locker (except for the nasty looks I get and the extra tire wear).

Personally I want to go with the new Auburn ECTED (because they don't make a detroit electrac for a 8.5" 10-bolt)...best of both worlds.

There is also a Torsen that has some preload in it you might want to look into.
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Old 08-13-2005, 11:16 AM
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I have done a lot of research and heard from a people that the Auburns burn up pretty quick. I think the Ected is rebuildable, but what a pain. I know the Truetrac won't burn up any time soon.

A friend of mine knows someone selling an airlocker. I don't know how much. I still am leaning towards the Truetrac pretty heavily.

Anyone else, input?
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Old 08-13-2005, 12:43 PM
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The ECTED isn't like the normal cone type limited slip diffs (LSD) that Auburn makes. It is more of a normal clutch pack type so I don't think it would burn up. You can also throw a switch and make it lock up and it is the 1 wheel peel that makes most LSD's burn up. If I do get one I think I would hook it up to a throttle switch so it would lock up any time I was at full throttle. From what I understand (if you don't mind doing the electronics) you can even use a knob (or TPS etc...) and set the "preload" at whatever you want. It just sounds too cool for me to pass up.

The truetrac however is just a good all around diff for medium to high traction surfaces. It will even work well in low traction (one wheel in the sand or snow) if you apply the brakes a bit. It just doesn't work in zero traction conditions (one wheel off the ground) but for a car you shouldn't have to worry about that. The other problem is that they don't stand up to high power output well (or big tires). Because it is marketed to 4x4's more then to the street seen they rate it by tire size. I think they say 33" max tire size. I don't know what HP or ET level that would equate to but I don't think most people would have to worry about it (I have never heard of one going out on the street). Most people that have obscene amounts of power go for a Detroit or spool.
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Old 08-13-2005, 01:44 PM
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I am in the 500 ft./lbs. range for torque. I am running a 28" tall tire.
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Old 08-13-2005, 02:41 PM
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I've been using a powertrax no-slip (9" ford, 31 spline axle) for three years now and it works perfectly. Handling is predictable (I let the old lady drive it), basically it locks in given enough throttle. Does sometimes chirp tires while turning.
Can't really say if it would handle 500 ft lbs, I'm running a mild 350 chevy.
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Old 08-14-2005, 12:12 PM
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trutrac

Quote:
Originally Posted by broncoII88
Any detroit locker is a good one. They make real strong lockers and posi's. The truetrac as I hope you know is a limited slip diff.
Man you don't want ANY type locker on the street, They don't differential at exactly the wrong time...... sooner or later it is going to bite you.....

I had a Mopar and in a slight drizzle (oil residue on the road I am sure) I went straight off into a front yard..... only going 20
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Old 08-14-2005, 06:50 PM
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triaged...A spool locks the wheels together all the time! You would get worse cornering! You would have understeer going into a turn because the spool is trying to push the car forward! Yeah I know lockers on wet roads suck, but then you get good traction going straight!
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Old 08-14-2005, 08:05 PM
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Quote:
Originally Posted by broncoII88
triaged...A spool locks the wheels together all the time! You would get worse cornering! You would have understeer going into a turn because the spool is trying to push the car forward! Yeah I know lockers on wet roads suck, but then you get good traction going straight!
I have a welded diff in one of my trucks and have auto-x'd a car with a welded diff as well (poor mans spool). I wasn't saying that I would want a spool...just that they handle better when driven hard then a locker does. Spools are nothing if not Very Consistant! There is no wondering how bad it is going to upset the car when it locks powering out of a corner, no driving only 1 wheel, no half turn of backlash, etc... One of the best race car drivers in the history of the world (Mark Donahue) used spools exclusively.

I never said it was for everyone...just that I would much rather drive one on the street then a locker if handling was what I was consirned with (and didn't mind the chirping, tire wear, cops, etc...).
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Old 08-15-2005, 05:01 PM
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Oh! Of course they handle better than lockers under hard conditions...They have no moving parts!
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Old 08-16-2005, 10:59 AM
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trutrack

Quote:
Originally Posted by broncoII88
Oh! Of course they handle better than lockers under hard conditions...They have no moving parts!
Excuse me sir, you seem to be confusing lockers with spools which do not have moving parts. Lockers have lots of moving parts (and lock and unlock abruptly) and so does the trutrac which does it smoothly. Anything that does not "differential" realitively easily will be a bear to drive in wet conditions. Sure, if you become an expert and understand that you have to be COMPLETELY OFF the gas to corner.. you will do OK.
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Old 08-16-2005, 04:27 PM
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No I think YOU are confused here. I know spools don't have moving parts! Even something as simple as a Lock rite has moving parts!!!
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