RCCUMMINS89 wrote:A power lok is not a lunch box locker.
A power lok is the factory limited slip.
There are many versions of a "Limited Slip".
A "Power Lock", by Dana, is the 4 pinion clutch type differential that uses a ramp design on the spider cross pins to compress the clutches.
The Track lock is a 2 pinion clutch type design that typically mimics GM's design, Ford employs a version of this in nearly all of the later 9 inch stuff.
Then you have the cone and cup locker, a cone pre-loaded by several springs into a case that has cups machined into it, that increase resistance to sort of spin both wheels (simplified description).
There is also the Ratcheting locker, aka; Detroit Locker, an intricate design of dubious durability, much less reliability.
Then, of course, there are the myraid of air (or other wise activated) lockers in the aftermarket.
The best bang for the buck in locking differentials is the 4 pinion POWER LOCK, as typically found in our 1st gens.
It's durable, 100% rebuildable and still easy to find parts for.
Mark.