Posi track/ lock whatever its called
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Elder User
Joined: Aug 2005
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From: Katy, Texas
Posi track/ lock whatever its called
Ok everyone at school talks about posi or whatever its called and im wonderin what it is and if u an get it for our older trucks. I got stuck the other day and only one of my wheels was spinnin in the back and the guy who pulled me out said if i had posi or whatever its called, both wheels would spin and i prolly wouldnt have gotten stuck. My truck is 2 wheel drive, but i usually dnt have trouble gettin outta mud or where i was, a rice canal(dry) anyways i know this is a lot but im just curious on what the heck posilock is!
Freshman User
Joined: Jul 2006
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From: granbury, tx
Positrac is a limited slip differential that uses clutches to control slipand transfer some power tothe wheel that has traction. You can get one for your axle from most 4x4 shops. For even more traction you could use a full locker.
Elder User
Joined: Aug 2003
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From: newfoundland canada
Ford calls it limited slip,Dodge calls it trac-lock,Chev calls it positive traction,they all work on the same princables,clutches.Go to the scrap yard and look on the door post for the axle code,if it starts with a letter(C5,etc)its the limited slip.The letter denotes limited slip,the number denotes axle ratio.
Freshman User
Joined: Jun 2006
Posts: 40
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From: On A Lake
FWIW,
I have used the "No-Slip" from Powertrax by Richmond and they work great
although I used it in my Jeep, I was able to go a lot more places in two wheel drive. However if you use a "locker" you need to be extra careful when driving on slick surfaces.
I have used the "No-Slip" from Powertrax by Richmond and they work great
although I used it in my Jeep, I was able to go a lot more places in two wheel drive. However if you use a "locker" you need to be extra careful when driving on slick surfaces.
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 16
From: Nutter Fort, WV
A locker is the ultimate traction device, but they also have some serious drawbacks.
Most of them lock tighter the more torque you apply to them.
This is true for both acceleration and deceleration.
This can cause your truck to go in a straight line either up hill or down hill and possibly in a turn under the right conditions.
They don't work well if you haul weight, I had one in my truck and when I had several tons in the back I could not turn my truck going up a steep hill on dry pavement.
With enough traction, either the axle bolts will schear off, the axle will break or the locker will explode.
I was running a Lock Rite locker in mine, it did schear the axle bolts off once and it also did explode once. The explode episode cost me a ring and pinion as well as every bearing and seal in the rear axle. (That is pronounced 1000 dollars up in smoke.)
I am now running Spicer Trac Lok's in both ends, they have clutches and I can still spin all four tires when I need to. If I get stuck now, "Houston, We have a problem" because it is going to take a dozer to get to where I am.
Most of them lock tighter the more torque you apply to them.
This is true for both acceleration and deceleration.
This can cause your truck to go in a straight line either up hill or down hill and possibly in a turn under the right conditions.
They don't work well if you haul weight, I had one in my truck and when I had several tons in the back I could not turn my truck going up a steep hill on dry pavement.
With enough traction, either the axle bolts will schear off, the axle will break or the locker will explode.
I was running a Lock Rite locker in mine, it did schear the axle bolts off once and it also did explode once. The explode episode cost me a ring and pinion as well as every bearing and seal in the rear axle. (That is pronounced 1000 dollars up in smoke.)
I am now running Spicer Trac Lok's in both ends, they have clutches and I can still spin all four tires when I need to. If I get stuck now, "Houston, We have a problem" because it is going to take a dozer to get to where I am.
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Freshman User
Joined: Jun 2006
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From: On A Lake
then there is always the electric, air, and manual lockers that you push a button and have locker when you need it and off when you don't.
But, for an onroad only vehicle a limited slip would probably be best.
it might be worth a little more research as some limited slips are high priced as some selectable lockers
But, for an onroad only vehicle a limited slip would probably be best.
it might be worth a little more research as some limited slips are high priced as some selectable lockers
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 16
From: Nutter Fort, WV
Not sure which one is factory supplied, I would guess Spicer was the supplier thougth.
I agree that the air lockers would be the best, but they require a compressor which adds several other possible points of failure that could leave you stranded in a bad place.
I agree that the air lockers would be the best, but they require a compressor which adds several other possible points of failure that could leave you stranded in a bad place.
Elder User
Joined: Sep 2004
Posts: 577
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From: Peoria IL
I dislike chevy trucks as much as anyone in here but in my opinion ford and dodge have some pretty sad limited slip axles compared to the chevy ones. The GMs will lock up every time while the old sterling or dana will leave you praying. When driving on icy roads the limited slip can also screw you over too though.
Then again the brown slime in my rearend might explain the limited lockup.
Then again the brown slime in my rearend might explain the limited lockup.
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