727 Short Tail Shaft

[RDF]

I picked up a 727 about 6 months ago and it has a short tail on it.  Will this need to be changed out when I plop my 440 in my cuda? rear end will stay the same 8 3/4...

[oldkimmer]

U will need to change the shaft and tail housing.................kim.............

[tactransman]

Yup,you'll have to change it. Are you gonna rebuild it it before you put it in? I know you can.

[RDF]

Yup,you'll have to change it. Are you gonna rebuild it it before you put it in? I know you can.

HAHA....you read my mind T....the guy said it was recently rebuilt, but I want to redo it anyhow just to be sure I've got the good stuff in there.  So we'll have to team up again and do another thread on rebuilding a 727 this time. 

[tactransman]

 

[lemming303]

What's the difference?

[tactransman]

Sorry,I don't have a pic of a short shaft 727 at this time,the difference is obvious when you see it though.

[lemming303]

I mean what is the difference in performance or usage? Is the shorter one weaker? Is it only for certain uses?

[tactransman]

There is no difference in transmission strength.

[lemming303]

Ok. Then the only difference is length and you would need a longer drive shaft

[tactransman]

You do not want to use a shorty in a car. There is no slip yoke so you would need a two piece driveshaft and a carrier bearing.

[RDF]

You do not want to use a shorty in a car. There is no slip yoke so you would need a two piece driveshaft and a carrier bearing.

I didn't think the shorty was good, but wanted to consult the experts here.  How much does a tail run for?  Cheap?  Expensive?   

[tactransman]

They are still pretty common so they shouldn't be more than $30-$40 for both. When you change the output shaft though,you need to make sure that it fits the splines on the front planetary because there is two types of splines.