Simple Question......maybe? Are all 32-splines the same diameter???

[Greg72]

Here's a question I've been thinking about tonight.....

Is it always true that 32-spline parts always have the same diameter? I'm thinking about transmission input/output shafts here. Is knowing that an output is 32 spline enough to guarantee that it will mate with a 32-spline input gear....??? This may include non-GM parts....BTW.

What about some of the others.....like 27-spline stuff?? Is it always a match?


(ps. - I'm not concerned for the moment about "stickout" lengths at the moment....just whether the splines are always the same shapes and overall diameters)






This may have something to do with a T56 transmission and an Atlas 4 transfercase..... .............maybe.

 

[pauly383]

As for np205/208/241 cases and th400 trannies , all the 32 spline slip yoke stuff is the same on the rear . I would same would hold true on the other items with various spline .

Spicer ( Dana axles ) and GM both have 30 spline axles , that will not interchange from what I was told .

 

[mikey_d05]

All splined stuff doesn't have to have the same diameter.

...and AFAIK, GM and Dana 30 spline pieces won't interchange because the angle the splines are made at is different.

 

[marv_springer]

Greg,

I just saw this....

For the biggest part, the answer to your ? is - Yes. But Mikey is right, splines can come in many different sizes and pitches. But I have yet to see it really happen in most American auto applications.

Marv

 

[atho]

I know the common 32 spline transfer case outputs fits exactly into a GM 32 spline transfer case input gear.