28 or 30 spline axles?

[455 oldz]

Can some one tell me what the axle spline count is on my 1987 G80 posi 8.5" rear? I was told that 86 and older is 28 spline and 87 is 30 spline. My rear is assembled so I can not tell

Thanks for your help

 

[steve hughes]

Both are 28 spline.

 

[455 oldz]

Thanks!