Originally Posted by Isuzusweet
True point as if you order a 4WD without either you actually have a 2WD truck. That being said there are pros and cons to both.
A limited slip is a have and forget item as it will automatically engage and disengage should wheel slip occur. The con is that at speed on ice going up a slight incline the axle may lock up and the truck will start to swerve to one side or the other. It does take a gentle and smart approach to the gas pedal on very slippery conditions at speeds with a limited slip. They have also been manufactured for years, are pretty bulletproof and will disengage to allow for turns without damaging gears.
A locker takes a lot more thinking about when to engage or not to engage as once locked the rear axle will not tolerant any speed difference between the two wheels on that axle without possibly damaging the pumpkin gears. A locker is also a lot more expensive $1,500 CDN versus $400.00 CDN for the Ford version. Also they will be more to maintain as they do have, in the Ford case an electrical motor actuator. ARB makes beautiful lockers that are air actuated.
I personally love lockers and had them on my Toyota Landcruiser but they are more applicable IMHO to true off road situations and rely on the user being smart about how to use them.
This is soooo not true. A G80 Eaton locker is $400, and unlocks (and won't lock ) above 20 mph. And is totally automatic....no switches...just locks when there is a 100rpm difference between right and left rear wheel. They are idiot proof and a true locker, not a LS.