True Trac vs Detroit Locker opinions - Ford Bronco Forum
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post #1 of 55 (permalink) Old 03-13-2016, 07:28 PM Thread Starter
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True Trac vs Detroit Locker opinions

So as the title says, I am looking for opinions. Mostly street use, occasionally sees some wheeling, no mud, mostly rocks and sand. Factory LS went boom, shredded the spider gears, so I am thinking upgrade. Probably won't ever get bigger than 33 inch tires, running 32s now. I realize there are other threads related to diffs, and I have read them. Most of the posts are 10 plus years old. Let's hear from current users and their opinions.
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post #2 of 55 (permalink) Old 03-13-2016, 08:03 PM
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post #3 of 55 (permalink) Old 03-13-2016, 08:48 PM
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No big tires or HP true track or just rebuild your unit you have now.
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post #4 of 55 (permalink) Old 03-13-2016, 09:10 PM
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What're the pros and cons of each? I'm facing the same decision. I was told the TrueTrac is better since it uses gears instead of clutch packs.

'93 XLT;5.0 V8;E4OD With Sonnax SureShift; 2.5" RC lift; 33x12.5 BFG AT KO2s; 4.56s; Truetrac; Warn Premiums; Flowmaster Super 40 muffler; Sag swap; Redhead steering box

If it moves and it shouldn't, use duct tape. If it should move and it won't, use WD-40.
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post #5 of 55 (permalink) Old 03-13-2016, 09:25 PM Thread Starter
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Rebuilding current unit is not an option. Carrier cracked / split all the way around.
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post #6 of 55 (permalink) Old 03-13-2016, 09:45 PM
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The Detroit Locker acts basically like a ratcheting mechanism, has some noise and an ocational
Thud asociated end with operation around curves. The True Track is much like your stock limited slip with clutch packs. A locker is much more durable.
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post #7 of 55 (permalink) Old 03-13-2016, 09:51 PM
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I thought the Truetrac has no clutch packs

'93 XLT;5.0 V8;E4OD With Sonnax SureShift; 2.5" RC lift; 33x12.5 BFG AT KO2s; 4.56s; Truetrac; Warn Premiums; Flowmaster Super 40 muffler; Sag swap; Redhead steering box

If it moves and it shouldn't, use duct tape. If it should move and it won't, use WD-40.
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post #8 of 55 (permalink) Old 03-13-2016, 09:54 PM
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Do you have a 9"? I have a 35 spline Detroit Loker I was going to sell, brand new never installed.
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post #9 of 55 (permalink) Old 03-13-2016, 09:56 PM Thread Starter
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Quote:
Originally Posted by deadsquiggles View Post
I thought the Truetrac has no clutch packs
That is correct. True Trac is a gear driven limited slip system.
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post #10 of 55 (permalink) Old 03-13-2016, 09:57 PM Thread Starter
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Originally Posted by 445 FE Bronco View Post
Do you have a 9"? I have a 35 spline Detroit Coker I was going to sell, brand new never installed.
Stock 8.8" rear in my 89.
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post #11 of 55 (permalink) Old 03-13-2016, 09:59 PM
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Why did original grenade?

Truetrac have to run no c-clip, spring in slip shaft.
Can run stock carrier with powertrax with c clip

I love mine, not a rock crawler but acts like locker till wheels off ground. Then I brake to keep moving. Never been stuck in snow/mud though no regrets for my use. Will install again in next build.

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Explorer intake with functional OBD2, no AC and HD radiator
Fms headers, magnaflow stainless down pipe and cats, 2 1\4" tail pipe. 33" duratrac on stock wheels, 4:56 sportsman gears with truetracs front and rear. Custom bumper with recievers for 8274 warn.
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post #12 of 55 (permalink) Old 03-13-2016, 10:08 PM
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Quote:
Originally Posted by deadsquiggles View Post
I thought the Truetrac has no clutch packs
It has tapered screws that wedge into cones in a simplified explanation.
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post #13 of 55 (permalink) Old 03-13-2016, 10:27 PM
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Quote:
Originally Posted by 445 FE Bronco View Post
It has tapered screws that wedge into cones in a simplified explanation.
Ahhhh. Well after reading up a little more, I'm going with the Truetrac. Just seems simpler. No additive to add, no clutch packs to go bad.

To the OP, good luck with your decision.

'93 XLT;5.0 V8;E4OD With Sonnax SureShift; 2.5" RC lift; 33x12.5 BFG AT KO2s; 4.56s; Truetrac; Warn Premiums; Flowmaster Super 40 muffler; Sag swap; Redhead steering box

If it moves and it shouldn't, use duct tape. If it should move and it won't, use WD-40.
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post #14 of 55 (permalink) Old 03-13-2016, 11:00 PM Thread Starter
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Quote:
Originally Posted by omp View Post
Why did original grenade?

Truetrac have to run no c-clip, spring in slip shaft.
Can run stock carrier with powertrax with c clip

I love mine, not a rock crawler but acts like locker till wheels off ground. Then I brake to keep moving. Never been stuck in snow/mud though no regrets for my use. Will install again in next build.
Not sure why the original grenaded. Truck only has 170K on it. Was abused pretty severly by PO. Started clunking earlier this week. Went today and got a gasket to check it out, and it is not pretty. Actually broke the diff casting.
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post #15 of 55 (permalink) Old 03-14-2016, 01:19 AM
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post #16 of 55 (permalink) Old 03-14-2016, 06:42 AM
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Quote:
Originally Posted by jfourdyce View Post
Not sure why the original grenaded. Truck only has 170K on it. Was abused pretty severly by PO. Started clunking earlier this week. Went today and got a gasket to check it out, and it is not pretty. Actually broke the diff casting.
I feel like you mentioned the PO had used the Bronco as the primary vehicle to launch his boat. Just a guess but I bet that axle had a period of time in its life where the gear oil was garbage.

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post #17 of 55 (permalink) Old 03-14-2016, 08:31 AM
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I vote trutrac quieter for everyday use than Detroit but offers the benefit of a lock when needed. No clutches like factory LS to wear out. Like mentioned you will have to change driving habit and learn to use the brake with the gas when one tire loses traction. Drive it offroad two footed.
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post #18 of 55 (permalink) Old 03-14-2016, 02:27 PM
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I have the Detroit in the rear axle and the TrueTrac in the front axle of my Bronco and I really like them both.

If primarily used on the road with occasional off road, TrueTrac all the way.

That said, my Detroit is not all that objectionable on the street once you are familiar with its manners.

Like others have mentioned, learn to ride the brake a bit to get the TrueTrac to grip when one tire is in the air.

The TrueTrac is what I'm putting in the rear of my Super Duty.
cobrajoe and 445 FE Bronco like this.

I bought a Jeep, lesson learned...
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post #19 of 55 (permalink) Old 03-14-2016, 11:11 PM Thread Starter
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True Trac kit ordered from JBG today. 725 for the True Trac, all bearings and seals for the rear end, and a new ring and pinion. Will be basically a brand new rear end when done. Was about 780 with tax and shipping. Will be in my hands Friday, according to United Parcel Service.
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post #20 of 55 (permalink) Old 03-14-2016, 11:18 PM
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One thing to remember about the True Track, they do not recommend heavy loads like a diesel, towing or tires over 33". At least that is what their site recommends. Due to me running a stick, 4.10 gears, big HP / torque and 35" tires a locker is my only option, ARB is another option but at a much higher cost and I would like to be able to use my locker on the street. A manual locker is essentially a spool when actuated causing bind and reducing cornering ability when engaged.
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