Checking diffs when box is out of car

My engine is nearly ready to drop out the car .
Once it's out i want to get the transfer box checked etc .

is it possible to check the transfer box and diffs are working correctly .?


This is the thread from earlier in the year that makes me want to get it checked
http://www.gtir-motorsport-club.com/t3549-should-it-spin-the-wheels

If standard front diff not a lot to check, if you have a nismo LSD then they can be split to check plate conditions & preload on the plates but is specialist job to be done right.
Centre diff is in gearbox & requires a test bed to check full function of viscous pack & how it delivering the torque split. It is possible do some reconditioning to centre viscous units by removing old silicone fluid & flushing then adding new silicone of same viscosity or perhaps different if want change torque output of the viscous unit.
If on a standard front diff you may want consider a Modenna front diff as difference with one of these fitted is night & day & probably one of the biggest handling improvements that can be made & benefit on road or tack, think Modenna still have some in stock too.