steering box spline count???

[T-bone71]

Anyone know what size and spline count is on a chevy K-5 blazer steering box input shaft. Thanks

 

[ol'Jeeps]

FYI...

http://www.borgeson.com/boxesandracks.htm

GM Box Power
Model 605 '78-'84 3/4-30
Model 800 '77 and earlier 13/16-36
Model 800 '78 and later 3/4-30

Hope this helps?