There are four plates on each side. One type has teeth on the ID to engage the axle, the other has four ear tabs on the outside to engage the LS carrier. Stack them outer-outer-inner-inner gives you just one rough to smooth surface and is the stock configuration, about 25% power transfer. Alternate them outer-inner-outer-inner gives you three, and about 60% power transfer.
The latter is the "tight" configuration you asked about. Measure the stack height and add shims to get some compression for 70-75% transfer. It's real artsy and you should rig a test set up if you want something repeatable.
Note that anything off the stock configuration is not really useful for street driving. The plates will wear like mad on normal street corners in a high ratio, and are hard to steer because at slow speed of a normal intersection there is little slip at all at the LSD acts a bit like a solid axle.
The only place you will see a notable difference is on a fast freeway on ramp circle. High ratios are too much for autocross, but around 50% will do well. Fast track cars on fast tracks with big turns are the ones that benefit most from tighter ratios.
Robert
The latter is the "tight" configuration you asked about. Measure the stack height and add shims to get some compression for 70-75% transfer. It's real artsy and you should rig a test set up if you want something repeatable.
Note that anything off the stock configuration is not really useful for street driving. The plates will wear like mad on normal street corners in a high ratio, and are hard to steer because at slow speed of a normal intersection there is little slip at all at the LSD acts a bit like a solid axle.
The only place you will see a notable difference is on a fast freeway on ramp circle. High ratios are too much for autocross, but around 50% will do well. Fast track cars on fast tracks with big turns are the ones that benefit most from tighter ratios.
Robert