30 spline 700r4

[tx k5blazer]

About what year were these introduced? Are these more durable (overall considering there a later model design) than the 29 spline shaft 700's?

 

[Hogback Fabrication]

There are no 29 or 30 spline 700R4's.

Stock GM is 27 spline, there are some aftermarket output shafts. 23 and 32 spline I believe.

There definitely was never a 29 spline output on a 700R4. The 23 spline is a little bigger than the 27 and the 32 spline is significantly bigger, though failures from any of those are fairly rare.

 

[tx k5blazer]

There are no 29 or 30 spline 700R4's.

Stock GM is 27 spline, there are some aftermarket output shafts. 23 and 32 spline I believe.

There definitely was never a 29 spline output on a 700R4. The 23 spline is a little bigger than the 27 and the 32 spline is significantly bigger, though failures from any of those are fairly rare.

I meant the input shaft, if this is the same thing. An yes, I should have put 27 not 29.

After having my current 700 rebuilt multiple times over the years, I'm looking to do a quick fix to get by. Don't need something as pretty as the bowtie trannies. Just looking to do a quick swap from a parts truck if possible.

 

[diesel4me]

My tranny rebuilders book says :
1983:--Input shaft & drum assembly revised (doesn't state spline counts)
1984:--New torque converter introduced..new rear internal gear..
1985 Revised valve body that eliminates the torque converter clutch shift valve..--new pump assembly for trannys with electronically controlled TCC..--New rear carrier with oil deflector..
1986 : Wider one way clutch
1987:--New 10 vane oil pump...new design reverse clutch...new input shaft (doest state so,but I assume this is when the made the one with more splines?)..Deeper oil pan..wider input sprag...

 

[82355]

1987 is when the new input shaft was introduced, and yes, they are much better.

Martin