700R4 Torque Converter Spline 27 vs. 30, BobND?

[john8662]

I'm considering just replacing the torque converter on my 86 700R4 because it's a money thing and I want the truck back on the road as soon as the engine is rebuilt. I'm replacing the Torque Converter because of a buggered up nut/mounting pad on the torque converter to the flexplate (messed both up). I don't really have the dough for the engine rebuild let alone a rebuilt 700 right now (7-Eleven better watch out :D ).

So... I am pricing out new Torque Converters and was wondering which spline I have considering it's the original 86 transmission. There was a transition time where a 30 spline input was used.

Anyone know fer sure?

Thanks!

[BobND]

1982, 1983 and some 1984 700R4 transmissions have a 27 spline count. Late 1984 and newer 700R4 / 4L60 and 4L60E transmissions have a 30 spline count.

[john8662]

Thank you! Thats what I was reading online, but most of the sites I was looking at tried to say that there were still some 27 spline units until up about 88.

I was looking at a reman torque converter on ebay, price was right, but it was listed for an 83, so I'm sure it was the 27 spline model.

[BobND]

There may have been some small units for 4's or V-6's with 27 splines after '84, but not the diesel units.