Trans yoke question

[Paul Davidson]

Are all 4 spd drive shaft yokes the same as far as spline count

 

[Professor Fate]

No.
'66 and '67 short tail (A body) slant 6 and 273 four speeds had a 26 spline output shaft (same as a 904). Later in '67 when they introduced the big block 383 A bodies, they also introduced a larger output shaft with 30 splines (same as a 727). After that, they were all 30 spline starting in '68.
All long tail four speeds '65 and up were 30 splines from the get-go.
All '65 and earlier short tail four speeds and all '64 and earlier (I believe) long tail trannies had ball and trunnion output shafts.

 

[CRUZE 418]

Spline count seems to be 30 for a 4-speed. U-joint size can be different.

 

[CRUZE 418]

Well, I grabbed my answer from Brewer, guess that I was wrong.

 

[AJ/FormS]

Short tail overdrives come in both varieties as well

 

[Paul Davidson]

No.
'66 and '67 short tail (A body) slant 6 and 273 four speeds had a 26 spline output shaft (same as a 904). Later in '67 when they introduced the big block 383 A bodies, they also introduced a larger output shaft with 30 splines (same as a 727). After that, they were all 30 spline starting in '68.
All long tail four speeds '65 and up were 30 splines from the get-go.
All '65 and earlier short tail four speeds and all '64 and earlier (I believe) long tail trannies had ball and trunnion output shafts.

Are they all the same lenth

 

[Professor Fate]

Are they all the same lenth

No, the long tail transmissions (B, C, E bodies and truck) are just that- about four inches longer than the short tail trans. (A & F bodies).

 

[AJ/FormS]

But they do both use the same rear mounts and locations.

 

[Paul Davidson]

Are they all the same lenth

I meant are all the yokes the same length

 

[AJ/FormS]

No, overall yoke lengths can be all over the place, but
the part that sticks out of the tailhouse is what matters. In that regard, the 727 yokes are only a lil longer than the 904s.