limited slip differential question
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Fleet Mechanic
Joined: Feb 2004
Posts: 1,902
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From: Northern IL
limited slip differential question
Ok guys dont laugh im still really confused with this.
Whats the difference between a limited slip differential and a posi differential?
My Super Duty has a limited slip differential how does it work? The traction on snow and ice really sucks unless im in 4x4. Should I get a aftermarket differential?
Thanks ~Gage~
Whats the difference between a limited slip differential and a posi differential?
My Super Duty has a limited slip differential how does it work? The traction on snow and ice really sucks unless im in 4x4. Should I get a aftermarket differential?
Thanks ~Gage~
Cargo Master
Joined: Apr 2006
Posts: 3,215
Likes: 8
From: WV
Limited slip and posi are the same thing. I think "posi" comes from posi-track which is just what GM called their limited slips back in the day, same as Ford called them Trak-lok or whatever.
Anyway, limited slip diffs do just what their name says, they limit the amount of slip in the rear tires. They'll basically transfer power to the wheel with the most traction, as opposed to an open diff which transfers power to the wheel with the least traction.
If you want both wheels to get traction all the time then you need to be looking into "lockers" like a detroit locker, ARB, or some other sort of locking diff.
Anyway, limited slip diffs do just what their name says, they limit the amount of slip in the rear tires. They'll basically transfer power to the wheel with the most traction, as opposed to an open diff which transfers power to the wheel with the least traction.
If you want both wheels to get traction all the time then you need to be looking into "lockers" like a detroit locker, ARB, or some other sort of locking diff.
You Keep What You Kill
Joined: Dec 2006
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From: Huntersville, NC
LOL... it's another way of saying 100% correct. 
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Spot on, guys!
Stewart
Stewart
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Joined: Mar 2002
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From: Wake Forest, NC
Most accurately posi is short for positive traction differential. GM did use positraction as their trade name for the device, and I think this is where the term "posi" really became common realm.
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Ok guys dont laugh im still really confused with this.
Whats the difference between a limited slip differential and a posi differential?
My Super Duty has a limited slip differential how does it work? The traction on snow and ice really sucks unless im in 4x4. Should I get a aftermarket differential?
Thanks ~Gage~
Whats the difference between a limited slip differential and a posi differential?
My Super Duty has a limited slip differential how does it work? The traction on snow and ice really sucks unless im in 4x4. Should I get a aftermarket differential?
Thanks ~Gage~