TrailBeast
AKA Mopars4us on Youtube
Taking the original posters pardon here knowing pretty much that he has his answer to his question?
Yes I was expecting 30 or 60 thousands or even like the one I put in my truck that felt like a hundred thousand or more! This was definitely a full inch and a half! I know nothing about Glides either. And Rusty Rat Rods answer of no isn't what I want to tell my customer for damn sure LOL I'll research everything as always and get some education. As always I appreciate at the very least your educated guess
If I remember the glide input shaft can pull all the way out just like some of the older Fords like the C4 and C6 transmissions.
You might have just pulled it out to where the unworn bushing area on the shaft is, and that's why it stopped at 1.5 inches instead of coming all the way out.
Also if IRC you check the endplay on the output shaft of a glide instead of on the input shaft.
Like I said though, it's been a long time and I could have that confused with any number of other transmissions.
Maybe a Youtube vid would help answer some of those questions.