Driveshaft question, 727

[moparbud66]

I have successfully installed my 440, 727 in place of the wide block 318,727. It fit perfectly and the transmission is exactly in the same place. When I went to install the original driveshaft however, it would not slide into the big block transmission. The splines appear to be the same with the exception of a space of 5 or 6 splines worth on the driveshaft. Is it different or am I just not hitting the correct location going into the transmission? Thanks.

 

[WP29440SE]

scroll down towards the bottom. you should find what you are looking for

http://wagoneers.com/FSJ/tech/Transmissions/727TorqueFlightinformation.pdf

 

[moparbud66]

I went to look at another driveshaft last night and took mine along for comparison. They were the same except for the universal size. He had a tranny there and my driveshaft slid right in which means that there is a problem with mine. It was suppossedly just rebuilt too. Go figure.

 

[67 coronet]

take a peek in there with a flshlight and see if you can see anything.pull the seal if you need to.

 

[moparbud66]

I will pull the seal and have a look. The driveshaft slides in about 4" (seal included) and comes to a dead stop. If I can't see anything, Can I pull just the tail without too much trouble? Hopefully it won't come to that.

 

[moparbud66]

I pulled the seal and looked inside and all I can see is the shaft and everything looks clear. The only thing that I can see that could be holding me up is the rear shaft bushing. I can pound the driveshaft in partway and pull it back out with no apparent damage but when its in, its too tight to turn. Suggestions????

 

[Moparlar]

You might have to take off the tailshaft housing and see if it is the bushing

 

[67 coronet]

i would pull the tailshaft housing for a better look.bushing could be out of place or something could be broken.:eusa_think: