I have a question what is anti-slip...and is it better than a positrack?

 

Just wondering if you are talking about Limited slip?

 

yes that was what I was talking about sorry about that

 

LIMITED-SLIPS

Limited-slip diffs (also known generically as "posis" from the GM-trademarked Posi-Traction) offer the flexibility of allowing wheelspeed differentiation for cornering but "connect" the axle shafts when either side-to-side torque difference or wheelspeed exceeds a certain point. Most LSDs use friction between the differential case and side gears to connect the axles as opposed to lockers' meshing teeth. Generally, limited-slips are smoother and quieter on the pavement and inflict less tire wear than lockers because they transfer less torque per side. This is why some manufacturers recommend their LSDs for use in front axles.

In technical terms, limited-slips' design intent is to transfer more torque to the wheel with traction, a process called "torque biasing:" the available ring-gear torque that a given differential can transfer to one wheel when the other one has reduced traction. Open diffs have 1:1 torque biasing; a traction diff with a 2:1 torque bias would transfer twice as much of the ring-gear torque to the wheel with traction as the one without.

Generally, limited-slips are one of four designs: clutch-type, cone-type, the hybrid limited-slip/locker Eaton Gov-Lok, and planetary-type. Clutch-type limited-slips are the most common and use spring-loaded clutch packs between the diff case and side gears to transfer some of the ring-gear torque to the tire with less traction. When traction loss is sensed, the diff's clutches transfer the power to the other side by driving that side's side gears. The spiders gears spread the side gears, which in turn exert force on the clutch plates. Increased load increases the pressure against the clutch plates, which transmits power to' the wheel with traction.

 

I was wondering if my F-150 has a LS I own a 1999 F-150 XLT SPORT 4x2 supercab flairside...I noticed all the power goes to one wheel even in slipery conditions...

 

It's most common to "not'' have a LS; it's an option that I found few of on my lot searches. You can check by looking at your axle code on the sticker in your driver's side door jamb. It's 2 characters, the first character is "1" if open (non-LS) and is a "H" with the LS. These are the most common codes.

 

I checked out the axel code and it was 19 so does this meen it doesn't have LS

 

Yes, "19" means that it doesn't have the limited slip differential. "19" means a open differential (non-LS) and a 3.55 gear ratio.

 

Thanks Max for your help.

 

You're very welcome !!