yoke question please help

a buddy of mine needs help on the input shaft of a 70 and later yoke..
how many splines are on the yoke..
is it 10 or a fine spline?
thanks,
garymendy@yahoo.com

i am guessing on the tranz slip yoke for a 70

it will either be a auto or manual tranz 727 yoke or the smaller auto only 904/a999 yoke

I can count the splines and post back later... but,it goes by 727/4speed or 904 yoke most times

904 being the smaller one
727/4speed same size/spline count

The '70 and later pinion can have either 10 or 29 splines, the size of the nut will tell; 1 1/8" nut has 10 splines, 1 1/4" or larger nut has 29 splines.

my bad...i guess it was pinion yoke

what john said