Yukon locker or Detroit truetrac - Ford Powerstroke Diesel Forum
6.4L Performance Parts Discussion What has or has not worked for you?

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post #1 of 11 Old 04-22-2012, 01:04 AM Thread Starter
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Yukon locker or Detroit truetrac

I am looking to improve the pathetic at best traction , does anyone have experience with the truetrac or Yukon lockers? My truck is an all around mutt and one of my concerns is the mileage. Would the Yukon locker damage the fuel mileage? Any input would be greatly appreciated. The worst question is the one not asked !


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post #2 of 11 Old 04-22-2012, 04:53 AM
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I've ran a detroit locker in a mustang before and don't recommend them for a daily driven street vehicle (great at the drag strip, but loud, and jerky on the street). Look into the detroit truetrac. Alos ran one of those in a different mustang and it was great everywhere.
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post #3 of 11 Old 04-22-2012, 10:06 AM
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Quote:
Originally Posted by Antonm View Post
I've ran a detroit locker in a mustang before and don't recommend them for a daily driven street vehicle (great at the drag strip, but loud, and jerky on the street). Look into the detroit truetrac. Alos ran one of those in a different mustang and it was great everywhere.
I recommend the Eaton Detroit Truetrac. I just installed one. I've not experienced the dreaded one wheel spin since I have installed it. Sometimes I can hear the gears chatter in the truetrac sometimes when I have the wheel turned all the way on asphalt. If you plan on racing the truck and pulling a sled and installing huge tires then a true locker should be
installed because a truetrac is not designed for that type of treatment.
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post #4 of 11 Old 04-22-2012, 05:45 PM
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Is the correct part # for these trucks 915A550?
How hard to install??

2008 F-250 Lariat SRW 4x4 CC SWB ...
... KEM tuned Minimaxx
... S&B CAI / MBRP Cool Duals
... Dark Stone Metallic / Pueblo Gold
... Readylift 3.5" levelling kit
... Toyo MT 315/70/18 (bigger than 35-12.50)
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post #5 of 11 Old 04-22-2012, 06:00 PM
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That is the correct part number. Its not hard to install but I recommend having someone do it for you if you have never done one. A local 4x4 shop should be able to fix you right up. I got lucky with mine because I did not have to shim it because the backlash remained the same before and after. If you decide to do one yourself there are informative websites out there to walk you through it. Make sure to install new carrier bearings and races as well. No more friction modifier is needed with a truetrac.
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post #6 of 11 Old 05-04-2012, 10:13 AM
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Some guys haven't had luck with the Yukon Lockers, with some breaking under load...just from what I've read. I put a true trac up front and a Detroit locker in the rear...most of the time, i don't even need to engage the front axle. You will get feedback from a rear locker for every day use, but its a bullet proof unit..

the next best thing for the rear is a true trac, I would go true trac over a Yukon locker, just my opinion

'07 F-250 PSD 4x4 . S&B, 5" exhaust, zoodad, blue spring, '03 Turbo, 6.4 starter, 2.5 f/coils, adj Trac bar, 2" r/add-a-leafs, egr delete, DC 185 alt, Procomp shocks, SCT SF3 tuner, F-Detroit Truetrac, R-Detroit Locker, 4:10 gears, LT315/70r17 Duratracs, Amsoil Gear lube, Amsoil FE ATF, Delo 400 LE 5w30 diesel, Delo ELC, archoil 9100/ar6200, bpd ficm, arp studs, oem gaskets, HD water pump, stc, plugs, stand pipes, 6.4 banjo bolts, monitor, new oil cooler, coolant filter
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post #7 of 11 Old 05-04-2012, 11:49 AM
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What kind of cost is involved with these set-ups? I'm sick of one tire fire all the time.
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post #8 of 11 Old 05-04-2012, 12:27 PM
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It depends if your doing gears. If your just doing the rear axle differential then for costs: true trac $500, Installation kit w/bearings shims etc $150, labor to install $250+..so about $900 and you can be all set..

if you got big tires or plan to tow constant heavy loads or do a lot of off roading, it may be wise to grab some 4.10s or 4.30s gears, but you will have to do the front and rear.

My set up:

FRONT: true trac ($590, ebay), installation kit $60, 4.10 motive ring/pinion $110, Amsoil 80/90 lube $30, installation labor $400

REAR: Detroit Locker ($650, ebay), installation kit $169, 4.10 motive ring/pinion, $175, Amsoil Severe Gear 75w/110 $55, installation labor $400

Under $2700 in central texas

'07 F-250 PSD 4x4 . S&B, 5" exhaust, zoodad, blue spring, '03 Turbo, 6.4 starter, 2.5 f/coils, adj Trac bar, 2" r/add-a-leafs, egr delete, DC 185 alt, Procomp shocks, SCT SF3 tuner, F-Detroit Truetrac, R-Detroit Locker, 4:10 gears, LT315/70r17 Duratracs, Amsoil Gear lube, Amsoil FE ATF, Delo 400 LE 5w30 diesel, Delo ELC, archoil 9100/ar6200, bpd ficm, arp studs, oem gaskets, HD water pump, stc, plugs, stand pipes, 6.4 banjo bolts, monitor, new oil cooler, coolant filter
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post #9 of 11 Old 05-04-2012, 07:01 PM Thread Starter
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I decided against the Yukon locker and Detroit . I won't be doing that much off road so I went with the truetrac from west coast. For it the carrier bearing and shipping was a hair over 700. I thought hard about the locker but I do t want the crappy pop and scrub issues . Depending how I like the truetrac I may put one in front. I am also installing a 6 inch lift.


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post #10 of 11 Old 05-05-2012, 09:09 AM Thread Starter
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I just found a possible issue on the truetrac, has anyone heard of it being said that you can not run over 32 inch tires with that unit? My factory tires were 34 and they sold the unit for that application!


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