ls and gsr trans

how would i tell the diffrece in a gsr and a ls trany if they are both a y80 is there any other way to tell them apart


not sure about this, but try putting an axle in and turning it and see how many rotations the main shafts goes for each full rotation of the axle shaft, or the other way around actually, see how many rotations you need from the axle to get the main shaft to make one full rotation... not exact but you should be able to figure out if its a gsr or ls... no?