60 T-case ?

[arthog]

Is there a best year for the split case? and is there a way to tell them apart if you dont know where it came from

 

[wesintl]

usually the idler shaft.. Pre 86 smaller 34MM the 85+ is the larger 38mm.

http://www.cruiseroutfitters.com/tech_split_case.html

 

[PabloCruise]

I think there were some '85's that are 38mm, but most folks look to the 38mm idler shaft (visually exposed on the outside of the case) as ideal.