mackgoo

I understand that the drive flanges of a late 901 and the 915's differ in the spline, one finer than the other. Did all 915's have the same spline pattern? I thought I remember that even the 915's changed. Any one know when? Also how about the loboros, did they change over time? Again any one know when?

Thanks

john walkers workshop

in 1977 the 915 went to fine splines. the 901s all had coarse splines.